157

Technical Specifications

Civil works of DP1 Buildings(Academic Buildings, Access Corridor) &

Ancilliary Buildings

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SCOPE OF WORK
The specifications given below pertain to the Civil works to be carried in the following
buildings
1. Enginering Department - (G+5) (2 Blocks)
2. Science Department - (G+3) (2 Blocks)
3. Central Instrumentation Facility (G+2)
4. Central Prototype Facility (G+2)
5. 60+135 capacity Lecture Hall (G+1)
6. 300capacity Lecture Hall (G+1)
7. 500capacity Lecture Hall (G+1)
8. Library and Data Centre (G+4) & Observatory (G+10)
9. Access Corrider (G+1)
10. Ancillary buildings i.e Water Treatment Plant, Underground Tank & Pump room, Electrical
Sub Stations & Plant room(Academic Area), Electric substations(4 No.), Main receiving Sub
Station, Sewage Treatment Plant, Meter room, Security complex, Security cabins and watch
towers and Telephone Exchange building.

The work shall be carried out in accordance with the GFC Drawings along with Notes
mentioned on them, the relevant tender documents and CPWD General Specifications for
Civil Works Vol.1& Vol.2 shall be followed as per latest specifications and up-to-date
correction slips for all works execution unless noted otherwise. The soft copy of these
specifications is available at the link: http://cpwd.gov.in/Publication.

In case of Non DSR Items details of specifications is separately mentioned but wherever
specification not provided, Item should be executed as per DSR 2018 & Specification of
CPWD (Latest with up to date correction slips).

Contractor is liable to complete the building as per drawing & specification & make it
functional as per requirement & direction of Engineer-in-charge.

For all finishing works; especially - flooring, internal and external finishes, fittings and
fixtures, especially - hardware (for doors, windows, glazing, aluminum works etc)the
contractor shall submit necessary sample board and prepare necessary site mock-ups as per
the direction of the Engineer-in-charge. Execution shall be done only as per approved
samples and mock-up approved by Engineer-in-charge.

Shop drawings submitted by the contractor have to be approved for their design,
functionality and structural stability by IIT Bhilai/ Consultant.So contractor should submit
shop drawing well in advance so that work progress doesn’t suffer.

All Concrete (PCC, RCC etc.) works shall be done with OPC 43 grade cement and for all other
works, PPC cement shall be used.

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DETAILED SPECIFICATIONS

EARTH WORK
Earthwork excavation in foundation/trenches/over areas in all kind of soil/rock for desired
level as per Structural/Architectural drawing for all kinds of soil and ordinary rock shall be
as per CPWD Specifications- 2009 - Vol. I & Vol. II and relevant IS codes of latest edition with
upto date correction slips..Any deviation in earthwork in excavation as per site condition will
be ignored and nothing shall be paid extra. Top soil up to 300mm shall be preserved at site
premises (protected against erosion during rain) and reused in landscaping development as
per GFC drawing and CPWD specifications or as decided by Engineer-in-Charge
Excavation shall be undertaken to the width of the Basement / Retaining wall footing
including necessary margins for construction operation as per drawing or directed
otherwise. Where the nature of soil or the depth of the trench and season of the year, do not
permit vertical sides, the contractor at his own expense shall put up the necessary shoring,
strutting and planking or cut slopes with or without steps, to a safer angle or both with due
regard to the safety of personnel and works and to the satisfaction of the Engineer. Nothing
shall be paid extra.
The contractor shall make at his own cost all necessary arrangements for maintaining water
level in the area where works under execution are low enough so as not to cause any harm
to the works or problems in carrying out with the execution and the rates shall be considered
as inclusive of pumping out or bailing out water, if required, for which no extra payment
shall be made. This will include water coming from any source, such as rains, accumulated
rain water, floods, leakages from sewer and water mains, subsoil water table being high or
due to any other cause whatsoever. The contractor shall make necessary provision of
pumping, dredging, and bailing out water coming from all above sources and excavation and
other works shall be kept free of water by providing suitable system approved by the
Engineer-in-charge.
In order to avoid construction of undergroundstructure like UGS, WTP, STP, or any basement
portion of building being getting uplifted/damaged due to water pressure, the contractor
shall make arrangement for lowering the ground water table below the proposed foundation
level as approved by Engineer-in-charge. Sub soil water table shall be maintained at least 50
cm below the P.C.C. level during laying of P.C.C., water proofing treatment, laying of basement
raft and beams including filling of earth/sand under the basement floor. The water table shall
not be allowed to rise above base of raft level until completion of outer retaining walls
including water proofing of vertical surface of walls and back filling along the walls up to
ground level and until the structure attains such height to counter balance the uplift
pressure. However, the contractor should inspect the site and make his own assessment
about sub-soil water level likely to be encountered at the time of execution and quote his
rates accordingly. Scope of work are inclusive of pumping out or bailing out water, if
required. Nothing extra on this account whatsoever shall be paid to him unless otherwise
specified. The sequence of construction shall be got approved by the Engineer-in-charge.

All the major excavation shall be carried out by mechanical excavator. No extra payment
shall be made for that.

The rates are inclusive for all depths & nothing extra shall be paid for additional lift etc.

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Disposal and Shifting of Earth

Disposal of surplus excavated earth/cutting and shifting of earth to maintain required
finished levels as per landscaping drawing from one area to another within the campus by
mechanical transport including loading/unloading and stacking/spreading at designated
location as directed by E.I.C is included in the scope of contractor and nothing will be paid
extra even if contractor have to do double handling of earth.

Under Floor and Building Outerarea filling:-

Filling with available excavated earth in sides of foundations & under floors shall be done
only if earth found suitable, otherwise filling shall be done by bringing Moorum of approved
quality and quantity from outside and nothing extra shall be paid towards the same.

Moorum of approved quality and quantity shall be filled from Natural ground level to
Proposed Made up ground level as per GFC drawing outside allround the building along the
perimeter to an extent of 2.4 m from building outer face. Outer area murrom filling is
included in scope of contractor for every building.

All the filling (Exacavated Earth/Moorum) work should be done in the layers not exceeding
20cm as per CPWD specification

Landscape area
All Cutting and Filling of Earth coming to maintain the required finished level of complete
Landscape area as mentioned in the landscaping/building drawing is in the scope of
contractor. All filling should be done with available excavated earth and as per CPWD
specifications and if the earth is not available, the same of approved quality to be brought
from outside as decided by Engineer in Charge and Contractor is strictly advised to assess
the required quantity beforehand and to quote his rate accordingly and nothing extra will be
paid later.

Sand filling:
Supplying and filling with local sand including watering, ramming, consolidating and
dressing complete as per CPWD specifications shall be provided as mentioned in GFC
drawing.

Anti-Termite Chemical Treatment:

The construction measures specified below should be adopted for protection against
subterranean termites originating both internally from within the plinth and externally from
the area surrounding the building.

Supplying, Diluting and Injecting chemical emulsion chloropriphos/lindane E.C 20% with
1% concentration for anti-termite treatment and creating a chemical barrier for termite as
per cpwd specification and as per direction of EIC.

 Treatment of soil under floors above sand filling using chemical emulsion by flooding
@ 15 litre per sqm.
 Along external wall for 3m width using chemical emulsion @ 7.5 litres / sqm of the
vertical surface of the substructure to a depth of 300 mm including excavation channel
along the wall & rodding etc. complete.

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 Along the expansion joints, surrounding of pipes & fittings and conduits @ 20litre per
building.

Reinforced cement concrete/ PCC in substructure

Foundation shall be with RCC isolated/ stripped/ combined, Raft type footing as per
structural drawing using Ready mixed grade concrete as mentioned in drawing. Columns are
connected by grade (external) beams/plinth(Internal) beams below Ground level as per
structural drawing and wherever necessary additional tie beams shall be provided in
between grade beams/ plinth beams & top of footing based on the depth of footing. All
Pedestals & columns above foundation, plinth beams, tie beams etc shall be as per structural
drawing with Ready mixed grade concrete as mentioned in drawing. Reinforcement steel as
per drawings to be provided and Slab on grade below floor finish with Ready mixed grade
concrete slab include reinforcement steel as per drawings. Base concrete below the footing,
plinth beam, grade slab, etc. shall be of grade 1:4:8 minimum thickness of 75 mm or as
mentioned in GFC drawing.To maintain the cover to reinforcement in structural members
only factory made cover blocks of required size and grade not lesser than the grade of
concrete have to be used.

Brick work in foundation and plinth

Non modular well burnt clay/ Cement based flyash bricks of class 7.5 in foundation in cement
mortar 1:6 (1 Cement : 6 Coarse sand).

Damp Proof Course

Damp proof course shall be with 50 mm thick cement concrete 1:2:4 (1cement: 2 coarse
sand: 4 graded stone aggregate 12.5mm nominal size) mixed with approved water proofing
compound painted at top with a coat of residual petroleum bitumen of grade VG-10 of
approved quality at 1.7 kg/sqm.

Plinth Protection
Plinth Protection shall be 40mm thick rough Bilha stone with machine cut edges (straight or
raked as called for) or as specified in drawing to the pattern laid over a 20mm thick bed of
cement mortar 1:4 (1cement :4 coarse sand) with fine joints filled with cement mortar 1:2
(1cement :2 coarse sand) pigmented to match the stone. Brick edging, PCC& hardcore all
sections as shown in GFC drawing.

Light weight sunken floor filling:

Providing and laying machine mixed Autoclaved aerated cement (AAC) blocks concrete in
volumetric proportion 1:4:8 (1 cement : 4 coarse sand :8 AAC block aggregate 40 mm
nominal size) for specified thickness, for sunk floor, in depressed portions of toilets, terraces
etc. in super structure at all heights & levels, including centering and shuttering if required,
laying spreading, ramming, consolidating as per requirement and curing etc. complete as
directed.

Reinforced cement concrete/ PCC in superstructure:

All RCC Columns, walls, beams, slabs etc. shall be as per structural drawing with required
grade designed RMC concrete.To maintain the Cover to reinforcement in structural member,
only factory made cover blocks of required size and grade not lesser than the grade of
concrete in RCC works have to be used. As far as possible, no honeycombing is accepted,but

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if any minor rectification required it shall only be done with GP2/Epoxy grout and not by
Cement mortar.

Curing of RCC & PCC

Curing of concrete is most important. There shall be no compromise on this activity and it is
for the contractor to arrange for everything necessary to make sure that the concrete is cured
to the complete satisfaction of the Engineer-in-Charge. Concrete shall be protected from
quick drying with moist or damped hessian cloth or any other material approved by the
Engineer-in-Charge. After 24 hours of laying of the concrete, the surface shall be cured by
flooding with water or covering with damp hessian cloth for a period of 7 days to keep it
moist and for the next 7 days the surface shall be kept wet all the time by sprinkling water
continuously or as per CPWD specifications.
If required, for columns and other vertical surface curing compound of approved make can
be used as per the direction of E.I.C.

SHUTTERING / FORM WORK:-

The work shall be done in accordance with CPWD Specifications - 2009 - Vol.I& Vol. II with
upto date correction slips.
Steel shuttering and 12 mm thick BWP grade film faced plywood shuttering to be used in the
work by contractor as per direction of engineer in charge. All shuttering brought at site
should be new/fresh when used for the first time and should not be allowed more than
permissible repetition or quality of surface of shuttering become uneven which ever is
earlier

 Minimum size of shuttering plates shall be 600mm x 900mm except for the case when
closing pieces required to complete the shuttering panels. Dented, broken, cracked,
twisted or rusted shuttering plates shall not be allowed to be used on the work and Props
of steel shall be provided with adequate horizontal and cross - bracing. Steel props shall
use steel pipes and steel couplers.
 Form work including centering, shuttering, propping, staging shall be strong enough to
withstand the dead and live loads and forces caused by ramming and vibrations of
concrete and other incidental loads, imposed upon it during and after casting of
concrete. It shall be made sufficiently rigid by using adequate number of ties and braces,
screw jacks or hard board wedges where required shall be provided to make up any
settlement in the form work either before or during the placing of concrete. Form work
shall be properly designed for self-weight, weight of reinforcement, weight of fresh
concrete, and in addition, the various live loads likely to be imposed during the
construction process (such as workmen, materials and equipment). In case the height of
centering exceeds 3.50 meters, the prop may be provided in multi-stages. It is important
to note here that Designing of formwork/shuttering as per CPWD
specifications/relevant IS codes for RCC work i.e column/wall/beam/slab at all heights
and level as shown in GFC drawing is the responsibility of contractor and if any mishap
happens during execution of RCC work due to design/workmanship fault etc, then it will
be the sole responsibility of Contractor.
Workmanship :
Contractor shall account for all material and labour etc. to achieve the required finishes to the
satisfaction of the E-I-C :

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 The shuttering plates shall be cleaned properly with electrically driven sanders to remove
any cement slurry or cement mortar or rust. Proper shuttering oil or debonding
compound shall be applied on the surface of the shuttering plates in the requisite quantity
before assembly of steel reinforcement.
 The joint filler shall be resilient closed cell expanded polyethene and non- tainting as
manufactured by Supreme Industries Ltd or equivalent.
 Providing joint filler of required thickness in position to substrate using either double
sided foam adhesive tape or neoprene synthetic rubber adhesive. When forming
expansion joint with the Board in in-situ concrete, joint sealing slots can be readily formed
in the following matter-
a) Before installing, simply cut off a strip of the required depth. Then install the filler flush
with the finished surface.
b) Prior to sealing, the top strip can then be pulled easily from the joint to provide an
uncontaminated sealing slot ready for preparation and sealing.
 Form shall be so constructed as to be removable in sections in the desired sequence,
without damaging the surface of concrete or disturbing other sections, care shall be taken
to see that no piece is keyed into the concrete.
 Shuttering surface before concreting should be free from any defect/ deposits and fully
cleaned so as to give perfectly straight smooth concrete surface. Shuttering surface should
be therefore checked for any damage to its surface and excessive roughness before use.
 Suitable camber shall be provided in horizontal members of structure, especially in
cantilever spans to counteract the effect of deflection. The form work shall be so
assembled as to provide for camber. The camber for beams and slabs shall be 4 mm per
metre (1 to 250 ) or as directed by the E-I-C, so as to offset the subsequent deflection, For
cantilevers the camber at free end shall be 1/50th of the projected length or as directed
by the E-I-C.
 .Erection of form work may be from pre-moulded, pre-fabricated, pre-assembled plates
or forms reasonable enough to transport and erect at site to correct line and level as set
out at site. Supports shall be firm and maintained in position by nails, cross bracings, tie
rods, locking bolts and nuts. It shall be rigid and stiff so as to retain its shape during and
after concreting. The tie rods shall be terminated at least 40mm inside the finished
surface.
 Joints shall be water-tight and no cement slurry shall be allowed to slipthrough. In joints
foamed tapes shall be used.
 Pre-fabricated or site forms shall be assembled, so as to deshutter without any jerk to the
green concrete. For this double wedge shall be used. Wedges shall be nailed, the heads
reasonably left out, allowing easy removal while deshuttering.
 Pre-fabricated or on site fabricated forms shall be of sufficient thickness and with the
required supporting runners in either direction. Supporting runners shall be
standardised in size for easy replacement and universal use at site.
 In repeated use, panels shall be clearly marked for using at defined locations.
 Successive lift shall be tightened with previous lift by fixing foamed strips at joints to avoid
grout leakage.
 In fill pieces and panels shall be well dressed, leveled and jointed with main formwork so
as to achieve smooth, even natural finish.
 Provide and fix or fix only inserts pockets, to correct line and level and with sufficient
rigidity to keep in position while concrete placing is in progress along with vibration.
 Sloping, brackets, chajjasetc shall be well secured and firmly restrained.

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 Adequate access and working platform shall be arranged with required safety to avoid
reinforcement displacement, damage to shuttering and easy movement of concrete gang.
 Props and scaffolds are to be erected to correct plumb, line, level and with required tie.
Load carrying capacity of props shall be as per table of manufacturer.
 Props and scaffolds shall not be loaded more than allowed by manufacturer of Props
/scaffolds.
 Heavy, medium and light duty props shall not be mixed up.
 All angles and corners shall be sharp and well defined. In places where concrete edges are
permanently exposed and require no further treatment, they shall be chamfered in a
triangle of 25x25mm.
 At the design and erection stage, the following additional points shall be considered and
incorporated into the shutters.
 Openings for cleaning prior to start of concreting.
 Pouring points shall avoid high drops and provide easy access to vibrator
needles.Surfaces shall be treated with mould releasing oil or emulsion prior to
reinforcement laying.
 Joints of moulds shall be water-tight & should be checked from bottom to make sure that
no light is visible.
 Props shall be on solid base, plumbed, in one straight line, and braced horizontally and
cross.
 Tie bars in beams, walls and columns shall be at the correct place and fully tight.
 Wedges shall be fully secured and nailed with head left out for easy removal.
 All saw dust, dirt, shaving and any other unwanted materials shall be cleaned and hosed
out.
 Provision shall be made for watching form work while concreting and any other
platform needed for movement of workers without any disturbance to reinforcement.
 Opening/inserts : All required openings and pockets shall be provided as detailed in the
drawing. The contractor shall provide for the required material, labour for fixing and
supporting during concreting, in his quoted price. It is imperative that all openings and
pockets shall be deshuttered with care and all corners of openings shall be preserved. All
openings/pockets shall be in a correct line and level. After concreting, the openings shall
be secured by proper covering against any accident and guard rail and warning notice, if
any will be incorporated.
 In case of multistory building, the concreting of upper floor shall be done only after lower
floors have attained the strength.
 In case of shear walls, lift walls, internal walls, the form work shall be done by removable
type tie rods within PVC sleeves.
Note:- Tolerance in Finished concrete and class of surface finish should be as per CPWD
Specification.
Formwork for exposed concrete surfaces:-
 Where it is specifically shown on the GFC drawings to have Expose concrete finish or
original fair face finish of concrete surface without any rendering of plastering, 12 mm
thick BWP grade type 3 film faced plywood of CSFF designation confirming to IS: 4990 for
form finished/ fair faced concrete surface as per acceptance criteria where ever required
as per the Architectural GFC drawing. The BWP type 3 ply to be used can have maximum
3 repeatition only.
 The forms shall be constructed so as to produce a uniform and consistent texture and
pattern on the face of the concrete. The formwork shall be placed so that all horizontals
are constructed of lumber and are not paneled and the formwork joints shall be staggered.

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 To achieve a finish which shall be free of board marks, the formwork shall be faced with
plywood or equivalent material in large sheets. The sheets shall be arranged in an
approved pattern. Whenever possible, joints between sheets shall be arranged to coincide
with architectural feature, sills, window heads or change in direction of surface. All joints
between panels shall be vertical or horizontal unless otherwise directed. Suitable joints
shall be approved between sheets. The joints shall be arranged and fitted so that no
blemish or mark is imparted to the finished surfaces.
 Forms for exposed concrete surfaces shall be constructed with grade strips (the underside
of which indicate top of pour) at horizontal constructions joints, unless the use of groove
strips is specified on the drawings. The reset forms shall be tightened against the concrete
so that the forms will not be spread and permit abrupt irregularities or loss of mortar.
Supplementary form ties shall be used as necessary to hold the reset forms tight against
the concrete.
 For fair faced concrete, the position of through bolts will be restricted and generally as
indicated on the drawings.
 Plywood used in the formwork for obtaining exposed surfaces shall be got approved from
Engineer-in-Charge on each use. However no forms will be allowed for reuse if it is
doubtful to produce desired texture of exposed concrete.
 Cement of only approved shade shall be used preferably of single lot to achieve integrity
of texture.

REINFORCEMENT:-
Reinforcement bars shall be Thermo-Mechanically Treated (TMT) bars of grade Fe-500D.
conforming to IS 1786. Steel shall be fresh and new. It shall be free of defects and free of rust,
oil, paints, grease, loose mill scale or any other deleterious material undesirable for RCC or
prevent adhesion of concrete with reinforcement. The contractor shall procure TMT bars
from primary steel producers such as SAIL, Tata Steel Ltd.,RINL, Jindal Steel & Power Ltd.
and JSW Steel Ltd.All reinforcement bars brought at site shall be tested prior to use for
respective specification / physical properties. Only material acceptable as per IS shall be
allowed into the works. Workshop shall be installed at site for fabrication of steel.

Binding wires : Binding wire shall be 16 or 18 gauge annealed wire conforming to IS 280. It
shall be free from rust, oil, paint, grease, loose mill scale or any other deleterious material
undesirable for the reinforcement and concrete or which may prevent adhesion of concrete
with reinforcement.

Workmanship
 Fabrication of reinforcement : Reinforcement shall be fabricated as per the structural
drawing and approved bar bending schedule. Bending of material shall be cold bending
only.Anchoring of bars and stirrups shall be provided exactly as detailed in the GFC
structural drawing or as directed by the E-I-C.
 Laps shall be strictly as per the GFC drawing or as per CPWD Specification. For general
guidance, the following principles shall be followed as given in IS 456.
 Mechanical Reinforcement coupler of adequate strength, length and internal thread and
confirming to performance requirements as per IS code 16172:2014 can be used by
contractor for diameter 25mm and above in place of Lapping but nothing extra will be
paid for the same.
 The reinforcement shall be done as per CPWD Specifications - 2009 - Vol.I& Vol. II with
upto date correction slips.

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 The item of reinforcement of RCC work includes all operations including straightening,
cutting, bending, binding and placing in position at all the floors with all leads and lift
complete as per CPWD Specification - 2009 - Vol.I& Vol. II with upto date correction slips.
 To avoid displacement of bars in any direction and to ensure proper cover, only factory
made round type/rectangular cover blocks of same block of parent concrete shall be
used by the contractor. Nothing extra shall be payable on this account.

MASONRY WORK
All external walls as per GFC drawings shall be cement based Fly Ash brick Cavity walls (with
class designation 7.5) of thickness 400 mm (consisting of 230 mm external wall in cement
mortar 1:6 (1 cement: 6 coarse sand) & 115 mm internal wall in cement mortar 1:4 (1
cement: 4 coarse sand)) / 300 mm (consisting of two no. 115 mm wall in cement mortar 1:4
(1 cement: 4 coarse sand)) / 230 mm thick cement based fly ash brick single wall (with class
designation 7.5) in cement mortar 1:6 (1 cement: 6 coarse sand)

All Internal walls as shown in the drawing shall be autoclaved aerated cement blocks
masonry of given thickness / 115mm thick Fly ash brick masonry in cement mortar 1:4 (1
cement: 4 coarse sand) with cement based fly ash bricks (with class designation 7.5) /
230mm thick cement based fly ash bricks masonry in cement mortar 1:6 (1 cement: 6 coarse
sand) with cement based fly ash bricks (with class designation 7.5)

Brick Masonry
Unless otherwise specified Cement based Fly Ash Brick of class designation 7.5 shall be used
in all items of brick work. The classification of bricks brought by the contractor shall strictly
conform to CPWD Specifications – 2009 Vol-1 & II with upto date correction slips or as
specified.
Note:- Half brick masonry shall be provided with RCC bands of 75mm thick at the Sill and
Lintel level or every sixth course. RCC band shall contain 2no’s 8mm dia. with 8mm dia. single
legged stirrup at spacing of 150 C/C.

Autoclaved Aerated Cement Blocks Masonry

AAC Block shall confirm to IS:2185(Part-III) and shall be of grade-I with minimum
compressive strength 4.0 N/sqmm.
Providing and laying autoclaved aerated cement blocks masonry with 100 mm thick AAC
blocks in super structure above plinth level up to all level in cement mortar 1:4 (1 cement :4
coarse sand )/ block laying polymer modified adhesive mortar, with required thickness of
RCC band at sill level and lintel level or every 1.2m as specified in IS code.

Providing and laying autoclaved aerated cement blocks masonry with 200mm/300 mm thick
or as specified in GFC drawing. AAC blocks in super structure above plinth level up to all level
with required thickness RCC band at sill level and lintel level or or every 1.2m as specified in
IS code with approved block laying polymer modified adhesive mortar all complete as per
direction of Engineer-in-Charge.

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CAVITY WALL:-
It is a wall comprising of two leaves, each leaf being built of masonry units and separated by
a cavity so as to provide an air space within the wall and tied together with metal ties or
bonding units to ensure that two leaves act as one structural unit. The width of the cavity
shall not be less than 50 mm and not more than 115 mm. Each leaf of the cavity wall shall
not be less than 75 mm. The space between the leaves being either left as cavity or filled with
non-load bearing insulating and water proofing material as given in drawing.

The cavity between the walls shall be filled with cement concrete 1:2:4 (1 cement : 2 coarse
sand :4 graded stone aggregate 20 mm nominal size) up to plinth level & filled with 50 mm
thick extruded polystyrene rigid insulation board in super structure as per architectural
drawings.

The item shall include use of device for keeping cavity clear and forming the requisite weep
and vent holes as shown in architectural drawings..

Bonding units for Cavity wall

These shall be preferably precast R.C.C. units having cross-section based on the width of
cavity wall. Length of the Bonding units will be sum of thickness of both leaves plus width of
cavity. Width & Thickness are same as bricks used in the construction of cavity wall. Cement
concrete used in the bonding units shall not be leaner than 1:2:4 (1 cement : 2 coarse sand
:4 graded stone aggregate 20 mm nominal size).

Spacing :-Bonding units shall be spaced not more than 90 cm apart horizontally and 45 cm
vertically and staggered in each course. Additional ties shall be used near openings. Precast
R.C.C. bonding units provided in cavity wall shall not be less then 3 blocks per sqm.

Restrictions :-Cavity walls shall not normally be built more than 7.5 metres in height and 9
metres in length. Where large lengths and heights are desired, the wall shall be divided into
panels with strengthening measures such as pillars etc.

Adoption of cavity walls is not recommended when heavy concentrated load from beam etc.
are to be supported by walls.

SWG Aluminium sheet in cavity walls

28 SWG Aluminium sheet of required profile, size & shape shall be fixed in cavity walls as
indicated in drawing or as per the directions of the Engineer-in-charge, with 75mm laps at
the joints in the sheet including providing and laying cement concrete fillet in mix 1:3:6 (1
cement : 3 coarse sand : 6 coarse aggregate 12.5 mm nominal size)at the bottom of cavity.
Installation: - Cement concrete fillet in mix 1:3:6 provided at the bottom of cavity in the
profile as shown in drawings. Over the cement concrete fillet 28 SWG Aluminium sheet
provided as profiled to the required shape as indicated in drawing. Minimum overlap shall
be 75 mm provided at the joints of sheet.

19 mm dia PVC pipe in cavity walls

19 mm dia (OD), 150mm long, 2 mm wall thickness PVC pipes of approved make shall be
fixed in cavity walls with galvanized mosquito netting over mouth of pipe, pipes placed at
the required spacing and aligning the same vertically and horizontally etc. complete as per
drawing.

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Installation: - The pipe shall be cut to size as per drawing or as required, galvanized mosquito
netting fixed over mouth of pipe with the help of galvanized steel wire and the pipe placed
at location and required spacing as shown in drawing.

50 mm thick extruded polystyrene in between cavity wall

50 mm thick extruded polystyrene rigid insulation board of required size shall be fixed inside
cavity wall, complying with ISO 4898:2008 & ASTM C 578-08b - type VI, having thermal
conductivity of 0.0289 W/m K as per ASTM C 578 (measured as per IS 3346), compressive
strength of > 350 kPa listed as per ASTM D 1621, density of 34-36 kg/cum as per ASTM D
1622, water absorption < 1% by volume as per ASTM D 2842, oxygen index of 24.1 to 28.1
listed as per ASTM D 2863, cell size 0.4 mm of dia (max) as per ASTM D 3576. Fire retardant
property as per DIN 4102, Part 1 of class B2 and as per ASTM E84 class A, fixed with suitable
water based adhesive or fastener, complete in all respect as shown in Architectural drawings
or as per the directions of Engineer-in-Charge.

Expansion Joint System and Filler Board

Expansion joint filler Board of 25mm, 100 mm & 150 mm thickness.

Expansion joint filler Board is alkali resistant, closed cell, polymer based for RCC columns,
Beams, Walls and slabs. It is non-staining and non deteriorating expansion joint filler for
buildings.

Features required: -
 Closed cell- Negligible water / moisture absorption.
 Bitumen free -Non impregnated, non staining and Non bleeding. Does not disintegrate.
 Easy to use - no crumbs, dust or fibres, easy cutting by knife
 Chemical resistance – unaffected by acids, Alkalis,detergents, petrochemical products
 Excellent recovery hence can accommodate joint movement
 Will not discolour sealants or architectural substrates
 Thickness is built up using minimum 10 mm thick layer of specifically Extruded high
performance Sheet.

Providing & Fixing Expansion joint filler Board of Dawn Color of approved make, thickness
built up using minimum 10mm specifically extruded high performance sheet of minimum
density 28 kg / Cum including using adhesive or double sided adhesive tape to the casted
surface to form the expansion joint of required width. Filler board will become one side of
the shuttering while the expansion joint is being created. This item shall included
preparation of surfaces by cleaning of dust , oil, loose aggregate etc.,

Installation: - The Expansion joint board shall be cut to size as per the depth of expansion
joints required. The Expansion joint board shall be shorter than the face of the expansion
joints to allow installation of Seal / backer rod as per manufacturer’s specification. The sheet
shall be put in to place inside the expansion joints using suitable adhesive material with low
VOC as per GRIHA norms. Care should be taken during installation to prevent any adhesive
from sticking outside the expansion joints. Gaps of various sizes over or below 25mm/100
mm / 150mm shall have to be filled using the same Expansion joint board cut at site to give
a tight fit.

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 169

EXPANSION JOINT SYSTEM

Expansion joint system (floor/wall(internal and external)/ceiling ) of approved make and

for required gap to be provided wherever joint is coming as shown in drawing or as
decided by Engineer-in-Charge.

Floor Joint
Providing and fixing of heavy duty expansion joint system related with floor location as per
drawings and direction of Engineer-In-Charge. The joints system will be of extruded
aluminum base members, self aligning / self centering arrangement and support plates etc.
as per ASTM B221-02. The system shall be such that it provides floor to floor /floor to wall
expansion control system for various locations that accommodates multi directional seismic
movement without stress to it's components. System shall consist of metal profiles with a
universal aluminum base member designed to accommodate various project conditions and
finish floor treatments. The cover plate shall be designed of width and thickness required to
satisfy projects movement and loading requirements and secured to base members by
utilizing manufacturer’s pre-engineered self-centering arrangement that freely rotates /
moves in all directions. The Exp. Joint Cover should have an Articulated Telescope Design so
as to accommodate the movements in 3 directions.Provision of Moisture/water Barrier
Membrane in the Joint System to have watertight joint is mandatory requirement all as per
the manufacturers design and as approved by Engineer -in-Charge including cost of all
materials and fixtures, preparation of surface for receiving the joints and system to be
installed by company authorised vendor or as approved by Engineer in charge including all
leads and lifts etc. (Material shall conform to ASTM 6063).

Wall / Ceiling Joint

Expansion joint system related with wall / ceiling joint (internal / external) location as per
drawings and direction of Engineer-In- Charge. The joints shall be of extruded aluminum
base members, self aligning / centering arrangement and support plates as per ASTM B221-
02. The material shall be such that it provides an Expansion Joints System suitable for
vertical wall to wall/ wall to corner application/ Ceiling to Ceiling / Ceiling to wall corner,
both new and existing construction with no slipping down tendency amongst the
components of the Joint System. The Joint System shall utilize light weight aluminum profiles
exhibiting minimal exposed aluminum surfaces mechanically snap locking the multicellular
to facilitate movement. Preparation of surface for receiving the joints and system to be
installed by company authorized/trained vendors as per the manufacturers design and as
approved by Engineer -in-Charge (Material shall conform to ASTM 6063)

Performance Requirement: Material and works shall conform to the latest edition of
reference specifications as specified in the item and to all applicable codes and requirement
of local authorities having jurisdiction.

Approval of expansion joint system: Sample of expansion joint system along with
manufacturers latest published literature for material specified herein, material test reports,
shop drawings etc. shall be submitted for obtaining approval before material are delivered
at the site. The expansion joint cover assembly should be from one source (from single
manufacturer)

Installation of expansion joint system: In all cases the manufacturer’s standard written
instruction or specific instructions for installation shall be followed.

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Note:- For all external wall joint the expansion joint system shall be used with Moisture /
Water Barrier Membrane .

FLUSH DOOR
35 mm thick Flush doors with 1 mm lamination both side : All flush doors as shown in
GFC Drawing shall be 37 mm(35mm+1mm+1mm) thick factory made Flush Door shutters
conforming to IS : 2202 ( part-1 ) non-decorative type, core of block board construction with
frame of 1st class hard wood and well matched commercial 3ply veneering with vertical
grains or cross bands and face veneers on both faces of shutters.Edges of the shutter should
be provided withlipping with 2nd class teak wood battens 12 mm minimum depth on all
edges of shutters.1mm thick decorative high pressure laminated sheet of plain / wood grain
in gloss / matt / suede finish with high density protective surface layer and reverse side of
adhesive bonding quality confirming to IS : 2046 Type S to be provide on both side of shutter.
All flush door shutters shall be fixed with ISI marked stainless steel grade 304 butt hinges of
size as mentioned in the architectural drawing.Vision Panels shall be provided as per details
& size mentioned in GFC drawing .

NOTE:- The high pressure pasting of laminate over flush door shutter shall be done at factory
itself and vision panel to be provided as per drawing.

HINGED TYPE SLIDING FOLDING SYSTEM

Providing & Fixing hinged type sliding folding system ( ceiling mounted ) of approved make
as per manufactureres specification for 37 mm thick factory made Pre-laminated Flush Door
shutters conforming to IS : 2202 (Phenol formaldehyde resin bonded & shall be a green rated
product) of size 3000 mm wide & upto 2400 mm height. Out of four shutter panels, two
Panels each of width approximately 750 / 800 mm Sliding and Folding towards left & Two
Panels towards right manually. This complete system consisting of following components
as mentioned below :
Material & Make : Grant 1260 System of Hettich consisting : item code -1133284 Kit for 1
fold (2unit) +50146 Bottom Profile (1unit)+50125 Top profile (1 unit) + 50141 (2unit) ) ,
along with 4 pair butt hinges of SS304 finish of Hettich make having size 4*3*3 (item code-
142381) and 2no's tower bolt of hettich make inSS304 (item code9228400-) alongh with SS
finish handle Spira with end cap L-2mtr, ht-43mm (item code-115314+115298) / Fold 84
EF system of Hafele consisting : Article code 943.03.000 ( 2 sets ) ( set of accessories for two
folding door consisting of top hangers with double rollers, breaking plate to hold doors &
screws ) + 926.32.160 ( Hinges 12 Nos) + 940.99.932 ( 1 Nos running track of 3 metre length
) + 902.01.422 ( flush handle SS 4 nos )
Note:- The above work shall be done by manufacturers authorized
applicator/trained/recommeneded or as directed by engineer in charge.

ALUMINIUM WORK

Aluminium work for doors, windows, ventilators and partitions shall be with powder coated
as per approved shade (minimum thickness of powder coating 60 micron) extruded built up
standard tubular sections/ appropriate Z sections and other sections of approved make
conforming to IS: 733 and IS: 1285, fixing with dash fasteners of required dia and size,
necessary filling up the gaps at junctions, i.e. at top, bottom and sides shall be with required
EPDM rubber/ neoprene gasket etc. Aluminium sections shall be smooth, rust free, straight,
mitred and jointed mechanically wherever required including cleat angle, Aluminium snap
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 171

beading for glazing / paneling, C.P. brass / stainless steel screws, all complete as per GFC
architectural drawings and the directions of E-I-C.

Sub frame : Aluminium (minimum thickness of powder coating 60 micron) sub frame work
to be provided prior to finishing work, as per architectural drawing for all external & internal
doors, windows and ventilators with extruded built-up standard tubular sections of
approved make conforming to IS: 733 and IS: 1285, fixed with rawl plugs and stainless steel
screws etc.

Aluminium doors : All Aluminium doors shall be powder coated aluminium glazed doors
(minimum thickness of powder coating 60 micron) as per GFC architectural drawings . All
aluminium doors shall be fixed with stainless steel grade 304 hinges of size as mentioned in
the architectural drawing. Stainless steel grade 304 hardwares shall be fixed as per schedule
of hardware or as shown in architectural drawing.

Windows / Ventilators : All aluminium windows, ventilators & internal partitions shall be
powder coated (minimum thickness of powder coating 60 micron) as per GFC architectural
drawings. All openable window shutters shall be fixed with 300mm length adjustable heavy
duty friction stays & have single point locking handles without key of approved make
powder coated to required colour or shade as per drawing. Toilet ventilators shall be powder
coated aluminium shutter with fixed /top hung / aluminium louvers as per drawing.

Glazing : Glazing to be provided and fixed as per the mentioned in Architectural drawings,
as per the approved shop drawings, as specified and as directed by the E-I-C.

Fly proof mosquito mesh : Fly proof mesh shall be stainless steel grade 304 wire gauge, to
windows and clerestory windows using wire gauge with average width of aperture 1.4 mm
in both directions with wire of dia. 0.50 mm all complete with aluminium beading. Location
: staircases & toilets louvered windows or as shown in GFC drawings.

Silicone Sealant and Neoprene Gasket

Neoprene/EPDM Gaskets
The contractor shall provide and install e gaskets of approved size and profile at all locations
as shown and as called for to render the doors, windows etc. absolutely air tight and weather
tight. The contractors shall produce samples of the gaskets for approval and procure after
approval only.

Silicone Sealent
The gaps between frames and supports and also any gaps in the windows section shall be
raked out as directed and filled with sealent of approved colour and make to ensure complete
water tightness.

Application of sealant and gasket

 Sealant and gasket shall be provided wherever shown in the drawings or required for a
permanently weather tight installation.
 All adjoining surfaces shall be protected to receive sealant against staining by masking
and/ or other methods.

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 172

 Joints and joint surfaces shall be clean, dry, and free of any material that may have an
adverse effect on the bonding and/ or seal of the sealant and gasket materials.
 Apply sealant and gasket under the conditions recommended by the manufacturer(s).
Prime all surface to receive sealant and gasket unless recommended otherwise, use no
sealant that has started to set in its container or a sealant that has exceeded the self life
published by the manufacturer.
 Fill all joints continuously and completely with sealant, forming a neat, uniform, concave
bead. Finish the material flush with adjoining surfaces unless shown on the drawings.
All sealant surfaces shall be tooled smooth.

Hardware schedule:-All Doors and window to provided with necessary hardwares as

shown in Hardware schedule/drawing i.e stainless steel grade 304 hardware & fittings (such
as hinges, door closers, Dead Locks / Eloctromagnetic lock / mortise Locks / mortise
bathroom lock, lever & pull handles, tower bolts, Floor & wall door stoppers ,vision panels
etc., & windows / ventilators shall be provided with stainless steel grade 304 hinges, 300mm
length adjustable heavy duty friction stays & Single point locking powder coated handles
without Key.

Shop Drawings
The contractor shall submit the shop drawings of doors. Windows, louvers, cladding and
other aluminum work, based on architectural drawings well in advance preferably 60 days
before procurement to the Engineer-in-Charge for approval. The drawings shall show full
size sections of doors, windows etc. thickness of metal (i.e wall thickness), details of
construction, sub frame/ rough ground profile, anchoring details, hardware as well as
connection of windows, doors and other metal work to adjacent work.
Samples
Samples of doors, windows, louvers etc. shall be fabricated, assembled and submitted to the
Engineer-in-Charge for approval. They shall be of sizes types etc. as decided by Engineer-in-
Charge. All samples shall be provided at the cost of the contractor and shall be submitted to
the Engineer-in-Charge for approval well in advance of commencing the work

Fabrication
Doors, windows, etc. shall be fabricated to sizes as shown and shall be of section, sizes
combinations and details as shown in the Architectural Drawings. All doors, windows etc.
shall have mechanical joints. All members shall be accurately machined and fitted to form
hairline joints prior to assembly. The joint and accessories such as cleats, brackets, etc. shall
be of such materials as not to cause any bimetallic action. The fabrication of doors, windows,
etc. shall be done in suitable sections to facilitate easy transportation, handling and
installation. Adequate provision shall be made in the door and window members for
anchoring to support and fixing of hardware and other fixtures as approved by the Engineer-
in-Charge.

Protection of Finish
Polythene tape/bubble sheet protection shall be applied on the powder coated section
before they are brought to site. All care shall be taken to ensure surface protection during
transportation, storage at site and installation. The tape protection shall be removed on

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 173

installation. All aluminum members shall be wrapped with approved self adhesive non-
staining PVC tapes/bubble sheet till completion / handing over of the building whichever is
later. If any scratches and damages occurs shall be replaced or rectified at their own cost and
noting extra shall be paid against the same.

Hardware for doors and window

All Doors and window to provided with necessary hardwares as shown in Hardware
schedule/drawing.Hardware shall be of Stainless steel grade AISI 304 / AISI 316 & as per
European standard whenever applicable.All hardware should be of Satin finish or as decided
by Engineer in charge.

Stainless steel Screw used for fitting shall be of same metal and finish as the fitting otherwise
specified.

Samples & shop drawing : The Contractor shall prepare & submit shop drawings & samples
of all hardwares used & got approved from the Architect & Engineering-in-Charge prior to
the execution of work.

The detail list of hardware schedule is mentioned below. Although the tentative quantity of
particular items is mentioned in hardware schedule attached.

1. Stainless steel grade 304 satin finish tower bolts 150mm

2. Stastainless steel grade 304 satin finish tower bolts 300mm
3. Stainless steel grade 304 satin finish pull handle 19 mm dia x 150 mm long
4. Stainless steel grade 304 satin finish pull handle 19 mm dia x 200 mm long
5. Stainless steel grade 304 satin finish pull handle 22 mm dia x 300 mm long
6. Stainless steel grade 304 satin finish pull handle 38 mm dia x 1200 mm long
7. Satin stainless steel Foot operated Door Stopper with rubber buffer
8. Satin stainless steel wall mounted Door Stopper with rubber buffer
9. Single point locking handles without Key for window
10. Mortise lock with Euro Profile half Cylinder with one side Key & pairs of lever handle
with rose & escutcheons.
11. Mortice bathroom lock , strike plate, bathroom escutcheons with indicator & spindle
& pairs of lever handle with rose
12. Backset dead lock with Euro Profile Cylinder with both side Key operation including
strike plate & escutcheons
13. External Trim with panic device with cylinder & Key.
14. Stainless Steel Ball bearing hinges & Spring hinges for double action swing
doors
15. Surface mounted door closer
16. Electronic Deadbolt for double action swing doors

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 174

17. Single electromagnetic lock with 600 lbf (2668 N) holding force, surface-
mounted, with lock status sensor and red/green LED indicator,anodized
aluminium finish. Power supply: 12/24 V DC
18. Double electromagnetic lock with 600 lbf (2668 N) holding force per magnet,
surface-mounted, with lock status sensor and red/green LED indicator,
anodized aluminium finish. Power supply: 12/24 V DC
19. Single electromagnetic lock with 1200 lbf (5338 N)holding force, surface-
mounted, with lock status sensor and ed/green LED indicator, anodized
aluminium finish. Power supply: 12/24 V DC
20. Double electromagnetic lock with 1200 lbf (5338 N) holding force per magnet,
surface-mounted, with lock status sensor and red/green LED indicator,
anodized aluminium finish. Power supply: 12/24 V DC.

21. 300mm length adjustable heavy duty friction stays for window

22. Hydraulic floor spring with double spring mechanism and door weight upto 125 kg

GLAZING WORK

Glazing in aluminium doors, windows, ventilators shutters and partitions, spider glazing,
structural glazing & skylights etc. shall be with 6 mm thick single glass panel / 6 mm thick
single high performance toughened glass / 24 mm thick double glazed dual sealed insulating
toughened glass / 31.52 mm thick Double glazed dual sealed insulating toughened glass /
13.52 mm thick laminated toughened glass & 13.52 mm thick laminated heat strengthened
glass with norton tape, silicon structural sealant and weather proofing sealant complete as
shown in architectural GFC drawings/ as per approved shop drawings and the direction of
Engineer- in-Charge.

Details of different type of glazing is as follow:-

a) 6 mm thick Single clear/float glass:- Providing and fixing 6 mm thick Single

clear/float glass of approved make.

b) 6mm thick High performance toughened glass : Providing and fixing 6 mm thick High
performance toughened glass of approved make (meeting the minimum glass specification
mentioned below) with coating on face 2 in aluminium door, window, ventilator shutters etc.
complete as per architectural drawings and the directions of engineer-in-charge.The glass
shall be fixed with necessary EPDM rubber/neoprene gasket of the approved colour, make,
size and shape with silicone sealant of neutral grade.
(1) Light Transmission - 44% to 56% (2) Reflection (Ext.) - 14 to 19% (3) Reflection (Int.) -
18 to 27% (4) Solar Factor - 0.46 to 0.50 (5) U value – 5.4 to 5.6 W/Sqm K.

c) 24 mm thick Double glazed insulating glass: Providing assembling supplying and fixing
Double glazed insulating glass of size & shape as required & specified to aluminium door,
window & structural glazing with norton tape, silicon structural sealant and weather
proofing using weather proofing sealant (Dow-corning/Wacker or equivalent).The insulated

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 175

glass comprising of an outer toughened ( Heat strengthened ) float/clear glass 6 mm thick of

approved colour& shade with reflective coating on face 2 of approved colour& shade, an
inner 6 mm thick clear float glass toughened separated by spacers to create 12 mm
dehydrated air space and thermatically sealed by using double sealed organic sealant
(priming sealant of thermoplastic), solvent free polyisobutylene which is applied on both
sides of spacer, secondary sealant comprising of two component polysulphide in the right
proportion for final outer seal including perforated channel for air spaces and complete
processed with expertise of company authorized processor only or as directed by EIC,all
complete for the minimum required performances given below, as per Architectural
drawings, as per approved shop drawings, as specified and as directed by the Engineer-in-
Charge. The IGUs shall be assembled in the factory/ workshop of the glass processor.
(1)Light Transmission - 47% to 50% (2) Reflection (Ext.) - 12% to 14% (3) Reflection (Int.)
- 11 to 17% (4) Solar Factor -0.27 to 0.28 (4) U value -1.5 to 1.7 W/Sqm K.

d) 13.52 mm thick laminated high performance glass for skylight etc as per GFC:
Providing and fixing fixed glazing into skylights etc., with Laminated glass of approved
quality of 13.52mm overall thickness with 1.52mm thick polyvinyl butyl sandwiched
between heat strengthened glass of thickness 6 mm on both sides ( one glass shall be 6 mm
clear HS glass & one glass shall be 6 mm high performance HS glass) . PVB Interlayer; colour
shall be as per approved sample of the Architects. The glass shall be fixed with necessary
EPDM rubber//neoprene gasket of approved colour, make, size and shape, with Norton tape,
silicone structural / weather sealants of neutral grade. The Laminated glass shall be
assembled in the factory/ workshop of the glass processor.etc. complete as per architectural
drawings and directions of engineer-in-charge
(1)Light Transmission - 42% to 45% (2) Reflection (Ext.) - 19% to 23% (3) Reflection (Int.)
- 5 to 7% (4) Solar Factor -0.41 to 0.42 (4) U value -4.5 to 4.7 W/Sqm K.

e) 13.52 mm thick Laminated glass for spider glazing etc as per GFC:Providing and fixing
in spider glazing item Laminated glass of approved quality of 13.52mm overall thickness
with 1.52mm thick polyvinyl butyl sandwiched between toughened glass of thickness 6mm
on both sides( one glass shall be 6 mm clear glass & one glass shall be 6 mm high
performance glass) instead of 12 mm thick toughened glass as indicated in item. PVB
Interlayer; colour shall be as per approved sample of the Architects. The glass shall be fixed
with necessary EPDM rubber/neoprene gasket, PVC packing of approved colour, make, size
and shape, with silicone sealant of neutral grade. The Laminated glass shall be assembled in
the factory/ workshop of the glass processor.etc. complete as per architectural drawings and
directions of engineer-in-charge
(1)Light Transmission - 44% to 52% (2) Reflection (Ext.) - 14% to 19% (3) Reflection (Int.)
- 18 to 22% (4) Solar Factor -0.42 to 0.45 (4) U value -5 to 5.4 W/Sqm K.

f) 31.52 mm thick Double glazed insulating glass for structural glazing etc as per GFC:
Providing assembling supplying and fixing Double glazed insulating glass of size & shape as
required & specified to aluminium door, window & structural glazing with norton tape,
silicon structural sealant and weather proofing using weather proofing sealant (Dow-
corning/Wacker or equivalent).The insulated glass comprising of an outer toughened
laminated glass 13.52 mm thick ( 6mm clear toughened+1.52 PVB+ 6mm toughened high
performance glass of approved colour& shade with reflective coating on face 2 of approved
colour& shade), an inner 6 mm thick clear float glass toughened separated by spacers to
create 12 mm dehydrated air space and thermatically sealed by using double sealed organic
sealant (priming sealant of thermoplastic), solvent free polyisobutylene which is applied on
both sides of spacer, secondary sealant comprising of two component polysulphide in the

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 176

right proportion for final outer seal including perforated channel for air spaces and complete
processed with expertise of company authorized processor only or as directed by EIC, all
complete for the minimum required performances given below, as per Architectural
drawings, as per approved shop drawings, as specified and as directed by Engineer-in-
Charge. The IGUs shall be assembled in the factory/ workshop of the glass processor.
(1)Light Transmission - 46% to 48% (2) Reflection (Ext.) - 12% to 13% (3) Reflection (Int.)
- 11 to 16% (4) Solar Factor -0.25 to 0.27 (4) U value -1.5 to 1.6 W/Sqm K.

Installation: -
The glass shall be cut to exact size, toughened and brought to site for installation. The glass
panes shall be so cut that it fits slightly loose in the frames. Glazing shall be provided on the
outside of the frame unless otherwise specified. Before fixing the glass all joints and glazing
pockets to be cleaned by removing all foreign matter and contaminants such as grease, oil,
dust, water, frost, surface dirt or glazing compounds and protective coatings. Fixing of glass
panes may be done with Aluminium beading / section as shown in structural glazing detail.
Areas adjacent to joints shall be masked to ensure neat sealant lines. Masking tape shall not
be allowed to touch clean surfaces to which the silicone sealant is to adhere. Tooling shall be
completed in one continuous stroke immediately after sealant application and before a skin
forms. Masking tape shall be removed immediately after tooling. Installation of backer rod
of appropriate size and application of silicone sealant in a continuous operation using a
positive pressure adequate to properly fill and seal the joint. The silicone sealant shall be
tooled with light pressure to spread the sealant against backing material and the joint
surfaces before a skin forms. A tool with convex profile shall be used to keep the sealant
within the joint. Soap or water shall not be used as a tooling aid. All the glass work shall be
installed by a company Authorized/Trained/Reffered system integrator only or as decided
by Engineer in Charge.

SAMPLES / SHOP DRAWINGS

The contractor shall organize to submit samples & shop drawings well in advance for
approval.

SEMI UNITIZED STRUCTURAL CURTAIN GLAZING SYSTEM WITH PRESSURE PLATE &
CAP:

Designing, fabricating, testing, installing and fixing in position structural glazing and its
suitable glazing cleaning/maintenance system for all heights and all levels is included in
scope of contractor.

Structural Glazing shall be designed as per BIS code IS-875 Part III / EN 12210 for required
wind pressure. Structural analysis & design and preparation of shop drawings for the
specified design loads conforming to IS 875 part III (the system must pass the proof test at
1.5 times design wind pressure without any failure), including functional design of the
aluminum sections for fixing glazing panels of various thicknesses, aluminium cleats, sleeves
and splice plates etc. gaskets, screws, toggles, nuts, bolts, clamps etc., structural and weather
silicone sealants, flashings, fire stop (barrier)-cum-smoke seals, microwave cured EPDM
gaskets for water tightness, pressure equalisation& drainage and protection against fire
hazard) The contractor must design the Structural Glazing as per the prevalent site
conditions and building profiles and the Structural Glazing should be structurally safe. The
system should have already been tested/accredited by an international independent testing
laboratory. The system should comply with an Air infiltration requirement of ±600 Pa when

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 177

tested in accordance with ASTM E283 / EN 12207 133, Static and Dynamic water
penetration of 720 Pa in accordance with ASTM E331.

The work of Structural Glazing shall include the designing and fixing Mullions & Transoms
to the structure through adequately designed galvanized MS brackets, providing and fixing
glass of approved quality & spec. with Aluminum sections using structural silicon sealant of
approved quality including all Aluminum sub frames wherever necessary The transom
should be shorter than mullion by 1mm at the back face of the mullion. Gap between the
transom and mullion surface at intersection would not be acceptable. The system shall also
include sealing the complete glazing and perimeter channel with weather sealant to prevent
water penetration as per relevant specifications etc. Complete as per detailed drawings &
approved shop drawings. A complete drainage system to be incorporated in the design in the
unlikely event that water penetrates the pressure seal.

The contractor must provide detailed design &drawings of the system indicating individual
profiles and also details of any other profiles that may be used including dimensions, wall
thickness etc., for approval by the Engineer-in-Charge.

Specification for Materials used for Curtain Wall

(1) Glazing: as specified in drawing.

.(2} Framing system:Extruded Aluminum sections shall be specially designed and shall be of
6063/6060 T6 alloy. All exposed profiles should be powder coated to a minimum of 60
microns. All anchor fasteners to be made of SS 304 grade. All shims to be capable of
transferring the load evenly and made of a suitable material (Teflon etc.) capable of lasting
the life span of the system including all miscellaneous items such as peripheral sealants,
backer rods, flashing, fasteners, brackets etc. Aluminum extruded sections along with
hardware & accessories should be supplied by Approved system companies for all types of
articles like, mullions, transoms, gaskets, hardware etc.
(3) Sealant: Silicon sealant structural grade and weather grade shall be of approved make as
per the design requirement.
(4) Non-corrosive galvanized brackets of approved design. Galvanizing to be done
conforming to IS: 4759-1996 up to 610 gms. Per Sqm.i.e. 80-90 micron thickness. Shims of
various thickness to adjust the beam level/ line variations fixed with SS 316 Grade dash
fasteners of Hilti make or equivalent min. 12mm dia. 100 mm long .

Preliminary Requirements
(i) The contractor shall design, fabricate, deliver, install, test and guarantee all construction
necessary to provide a complete curtain wall system for the proposed building, all in
conformity with the drawings as shown
(ii) Specification and all relevant construction regulations including providing any measures
that may be required to that end, notwithstanding any omissions or inadequacies of the
drawing
(iii)The curtain wall system shall also include the following activities:
 Metal frames, glass glazing, spandrels, ventilators, finish hardware copings, metal
closure, windows etc.
 All anchors attachments, reinforcement and steel reinforcing for the systems
required for the complete installations.
 All copings and closure and metal cladding to complete the system.
 All sealing and flushing including sealing at junctions with other trades to achieve
complete water tightness in the system. Gaps up to 10 mm between the peripheral
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 178

aluminum member and masonry / R.C.C. / Stone shall be sealed by inserting Backer
Rod and weather silicon sealant : wherever the gaps are be more than 10 mm the
same shall be sealed by providing and fixing 1.5 mm thick Aluminum sheet flashings
bent to required profile as per approved design and duly Anodized/Powder coated in
approved color.
 Isolation of dissimilar metals and moving parts.
 Anticorrosive treatment on all metals used in the system.
Deflection Criteria:- For mullions: for Single height glazing, Span/175 or 19 mm,
whichever is less. And for Double height glazing For spans up to 4110 mm, same as single
height; and for spans above 4110 mm, the same shall be (span/240)+6.35 mm.
For transoms: i. Span/500 or 3 mm, whichever is the least for dead load and Span/175
or 19 mm, whichever is the least for wind load. Deflection at the centre of the glass:
Monolithic glass Shortest span/60 or 19 mm, whichever is the least and Double glazed
unit Shortest span/90 or 19 mm, whichever is the least and Deflection at edge of the
glass Shall be limited to 15mm.

 The transom should overlap the mullion with an EPDM separator. The screws for
transom should not affect the transom gaskets. The system should have a
continuous base transom with suitable continuous EPDM base gasket.

(iv) The contractor shall also be responsible for providing the following:
 Engineering proposal, shop drawings, engineering data and structural calculations
in connection with the design of the curtain wall system.
 Mock-ups, samples and test units.
 Performance testing of the curtain wall framing and glazing assembly.
 Co-ordination with the work of other trade.
 Protection during construction.
 All final exterior and interior cleaning and finishing of the curtain wall system.
 As built record drawings and photographs.
 Audit/inspection reports by principal system Supplier Company
 Guarantees and warranties.
 All hoisting, scaffolding, staging and temporary services.
 Conceptualizing and design of a suitable maintenance system for curtain glazing.

(v) The water tightness and structural stability of the whole curtain wall system is the prime
responsibility of the contractor. Any defect or leakage found within the guarantee period
shall be sealed and made good at the risk and cost of the contractor.

(vi) The curtain wall system shall be designed to provide for expansion and contraction of
components which will be caused by an ambient temperature range without causing
buckling, stress on glass, failure of joint sealants, undue stress on structural elements or
other detrimental effects, specific details should be designed to accommodate thermal
and building movements.

Design Requirements
 The basic design and architectural requirements shall consist of the size of window, net
glass area, ventilator, configuration of windows and spandrels to be retained. However
the contractor may propose alternatives on the construction details provided that all
basic functional and architectural requirements are fulfilled.

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 Curtain wall shall comply with all government codes and regulations, building bye-
laws, if any.
 All curtain walling, individual aluminum and glass components and all completed work
shall be designed and erected to comply with the following requirements.

Testing
The following performance test are to be conducted on structural glazing system if area of
structural glazing exceeds 2500 Sqm from the certified laboratories accreditated by
NABL(National Accreditation Board for Testing and Calibration Laboratories), Department
of Science & Technologies, India.
The NIT approving authority will decide the necessity of testing on the basis of cost of the
work, cost of the test and importance of the work. Performance Testing of Structural glazing
system Tests to be conducted in the NABL accredited lab or by any other accreditation body
which operates in accordance with ISO / IEC 17011 and accredits labs as per ISO/ IEC 17025.
1. Performance Laboratory Test for Air Leakage Test (-50pa to - 300pa) & (+50pa to
+300pa) as per ASTM E-283-04 testing method for a range of testing limit 1 to 200 mVhr
2. Static Water Penetration Test. (50pa to 1500p) as per ASTME- 331-09 testing method for
a range up to 2000 ml.
3. Dynamic Water Penetration (50pa to 1500pa) as per AAMA 501.01- 05 testing method
for a range upto 2000 ml
4. Structural Performance Deflection and deformation by static air pressure test (1.5 times
design wind pressure without any failure) as per ASTME-330-10 testing method for a
range upto 50 mm.
5.Seismic Movement Test (upto 30 mm) as per AAMA 501.4- 09 testing method for
Qualitative test, Tests to be conducted on site.
6.Onsite Test for Water Leakage for a pressure range 50 kpa to 240 kpa (35psi) upto 2000
ml

SPIDER GLAZING :

Designing, fabricating, testing, installing and fixing in position spider glazing for all heights
and all levels is included in scope of contractor

Suspended Spider Glazing system shall be designed to withstand the wind pressure as per IS
875 (Part-III). The Suspended System held with Spider Fittings of SS-316 Grade Steel of
approved manufacturer with Laminated glass of approved quality (Laminated glass of
13.52mm overall thickness with 1.52mm thick polyvinyl butyl layer sandwiched between
toughened glass of thickness 6 mm on both sides. PVB Interlayer; colour shall be as per
approved sample of the Architects.) held together with SS- 316 Grade Stainless steel Spider
& bolt assembly with laminated glass fins 21 mm thick. The Glass fins and glass panel
assembly shall be connected to Slab/ beams by means of SS- 316 Grade stainless steel
brackets & Anchor bolts and at the bottom using SS channel of 50x25x2mm using fastener &
anchor bolts, non staining weather sealants of approved make, Teflon/ nylon bushes and
separators to prevent bi-metallic contact, all complete to perform as per specification and
approved drawings. The complete system to be designed to accommodate thermal
expansion & seismic movements etc. The joints between glass panels (6 to 8 mm) and gaps
at the perimeter & in U channelof the assembly to be filled with non staining weather sealant,
so as to make the entire system fully water proof & dust proof. Spider glazing item includes
all design, Engineering and shop drawing including approval from structural designer,
labour, T&P, scaffolding, other incidental charges including wastage, enabling temporary

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services all fitting fixers nut bolts, washer, Buffer plates, fastener, anchors, SS channel
laminated glass etc. all complete. Shop drawings shall be submitted for approval from the
Engineer in charge before the execution of work.

SKYLIGHTS GLAZING:

Base frame of all skylights shall be M.S tubular frame of approved make & size as per
architectural GFC drawings fixed with the help of Stainless steel grade 304 anchor fastener
on concrete surface. All MS frames shall be painted with polyurethane paint over two coat of
Surface Tolerant Epoxy primer after surface preparation as per manufacturers specification.
Over the MS frame work 13.52 mm thick laminated glass shall be fixed with the help of
aluminium sections, profiles, trim section, caps etc. of size as mentioned in architectural GFC
drawing. Junctions of laminated glass shall be covered with aluminium capping profile /
section as shown & of size mentioned in GFC drawing including backer rod & weather sealant
to seal the junctions complete as directed by Engineer-in-Charge. Shop drawings shall be
submitted for approval from the architects before the execution of work.

ACOUSTICAL WALL PANELLING & ACOUSTICS DOOR

ACOUSTICAL WALL PANELLING

The Contractor shall carry out acoustical study by engaging acoustical consultant(at his own
cost) of the Lecturehalls/classrooms(where ever wall panelling is given) taking account of
drawings and should mention to E.I.C before starting of work if the drawings are good
enough or not to achieve good acoustics of Lecturehalls/classrooms.The contractor shall
also suggest ways to achieve desired values of various parameters for good acoustics to E.I.C
for which nothing will be paid extra.

Post construction the contactor have to carry out acoustical study from an independent
agency/acoustical consultant to verify the various acoustical parameters achieved or not. In
case of non-achievement of these parameters on account of faulty execution, the
modifications will have to be carried out by the contractor at no extra cost.

TYPE P1 : OAK / CEDAR VENEERED PLY PANELLING

Materials :-
Wood :- 4mm thick Oak / Cedar veneered ply & 6mm thick water proof marine ply,Steel
Screws & dash fasteners : - As specified or as per approved sample, MS tube , MS Angles,
Flats etc, Steel Primer, Enamel Paint, Wood Polish : - As specified or as per approved
sample.
Installation: - MS angle 50x50x5 supports / cleats of suitable size fixed to wall surface with
dashfasteners of 8 mm dia, 75 mm long bolt as shown in drawing. Tubular frame work shall
comprise of 50x50x1.6mm hollow MS tube, fixed away from the wall surface by MS angle
supports/cleats of suitable size. The hollow MS tubes to be mounted in a grid pattern with
spacing @ 400mm / 1000mm centre to centre ( horizontally & vertically ) or at required
spacing near opening, with necessary fixing / welding at junctions and fixing the frame to
wall with steel dash fasteners of 8 mm dia, 75 mm long bolt, including providing with two
coats of approved steel primer etc. The tubular framework to have welded connections,
minimum 20mm fillet weld on each side.

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Providing and fixing 4mm thick Oak / Cedar veneered ply (Kitply, Greenply, Century or
equivalent) on 6mm thick water proof marine ply, phenolic bonded (Kitply,
Greenply,Century or equivalent) and the surface finished with moulded Oak / Cedar
beading of 15 x 25mm in pattern as per drawing with 38mm long self tapping and self
drilling steel screws on framework . Entire work to be done as per drawing, specifications
and direction of Engineer-in-charge. To be wax polished in natural colour.

TYPE P2 : OAK / CEDAR WOOD SLAT PANELLING WITHOUT INSULATION

Materials :-
Wood : - First class Oak / Cedar Wood, 6 mm thick marine ply, Steel Screws & dash fasteners
: - As specified or as per approved sample, MS tube , MS Angles, Flats etc, Steel Primer,
Enamel Paint, Wood Polish, Glass wool , Black dyed jute upholstery fabric (not hessian) :
- As specified or as per approved sample.
Installation: - MS angle 50x50x5 supports / cleats of suitable size fixed to wall surface with
dashfasteners of 8 mm dia, 75 mm long bolt as shown in drawing. Tubular frame work shall
comprise of 50x50x1.6mm hollow MS tube, fixed away from the wall surface by MS angle
supports/cleats of suitable size. The hollow MS tubes to be mounted in a grid pattern with
spacing @ 400mm / 1000mm centre to centre ( horizontally & vertically ) or at required
spacing near opening, with necessary fixing / welding at junctions and fixing the frame to
wall with steel dash fasteners of 8 mm dia, 75 mm long bolt, including providing with two
coats of approved steel primer etc. The tubular framework to have welded connections,
minimum 20mm fillet weld on each side.

In order to minimize visibility of screws panel of size as per drawing supported on MS flats
20 x 6 mm at top & bottom are to be made with 80 x 12 mm & 32.5 x 12 mm thick timber
slats with a groove of 15mm between slats in pattern as per drawing with stainless steel
screws from the rear. MS flats shall be painted with two coats of enamel paint over two coats
of approved steel primer. Timber panels shall be preferably made of timber of large width;
the minimum width and thickness of the panel shall be same as specified in the drawings.
The grains of timber panels shall be sawn in the directions of grains & shall run along the
longer dimensions of the panels. All panels shall be of the same species of timber unless
otherwise specified. Sawing shall be truly straight and square. The timber shall be planed
smooth and accurate to the required dimensions.
These timber slat panels shall be fixed to the tubular frame as per pattern shown in drawing
with self tapping stainless screws. The slats to be backed with black dyed jute upholstery
fabric (not hessian) fix over 6 mm thick marine ply.Finally the slats shall be wax polished
after wood filler and sand papering to a smooth finish in its natural colour complete as per
drawing, specifications and direction of Engineer-in-Charge.

TYPE P3 : OAK / CEDAR WOOD SLAT PANELLING WITH INSULATION

Materials :-
Wood : - First class Oak / Cedar Wood, Steel Screws & dash fasteners : - As specified or as
per approved sample, MS tube , MS Angles, Flats etc, Steel Primer, Enamel Paint, Wood
Polish, Glass wool , Black dyed jute upholstery fabric (not hessian) : - As specified or as per
approved sample
Installation: - MS angle 50x50x5 supports / cleats of suitable size fixed to wall surface with
dash fasteners of 8 mm dia, 75 mm long bolt as shown in drawing. Tubular frame work shall
comprise of 50x50x1.6mm hollow MS tube, fixed away from the wall surface by MS angle
supports/cleats of suitable size. The hollow MS tubes to be mounted in a grid pattern with

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 182

spacing @ 400mm / 1000mm centre to centre ( horizontally & vertically ) or at required

spacing near opening, with necessary fixing / welding at junctions and fixing the frame to
wall with steel dash fasteners of 8 mm dia, 75 mm long bolt, including providing with two
coats of approved steel primer etc. The tubular framework to have welded connections,
minimum 20mm fillet weld on each side.

In order to minimize visibility of screws panels of size as per drawing supported on MS flats
20 x 6 mm at top & bottom are to be made with 80 x 12 mm & 32.5 x 12 mm thick timber
slats with a groove of 15mm between slats in pattern as per drawing with stainless steel
screws from the rear. MS flats shall be painted with two coats of enamel paint over two coats
of approved steel primer. Timber panels shall be preferably made of timber of large width;
the minimum width and thickness of the panel shall be same as specified in the drawings.
The grains of timber panels shall be sawn in the directions of grains & shall run along the
longer dimensions of the panels. All panels shall be of the same species of timber unless
otherwise specified. Sawing shall be truly straight and square. The timber shall be planed
smooth and accurate to the required dimensions.

These timber slat panels shall be fixed to the tubular frame as per pattern shown in drawing
with self tapping stainless screws.The slats to be backed with black dyed jute upholstery
fabric (not hessian) held on 24G x 10mm wire mesh and 50mm thick resin bonded glass wool
(24 kg/m3) cut to size and inserted in GI framework held on 24Gx12 GI wire netting.Finally
the slats shall be wax polished after wood filler and sand papering to a smooth finish in its
natural colour complete as per drawing, specifications and direction of Engineer-in-Charge.

TYPE P4 : OAK / CEDAR WOOD SLAT PANELLING WITH INSULATION & MINIMUM 50
MM AIR GAP
Materials :-
Wood : - First class Oak / Cedar Wood, Steel Screws & dash fasteners : - As specified or as
per approved sample, MS tube , MS Angles, Flats etc, Steel Primer, Enamel Paint, Wood
Polish, Glass wool , Black dyed jute upholstery fabric (not hessian) : - As specified or as per
approved sample

Installation: - MS angle 50x50x5 supports / cleats of suitable size fixed to wall surface with
dash fasteners of 8 mm dia, 75 mm long bolt as shown in drawing ( in such a manner to get
a minimum clear space / air gap of 50 mm thick between the wall & paneling ) . Tubular
frame work shall comprise of 50x50x1.6mm hollow MS tube, fixed away from the wall
surface by MS angle supports/cleats of suitable size. The hollow MS tubes to be mounted in
a grid pattern with spacing @ 400mm / 1000mm centre to centre ( horizontally & vertically
) or at required spacing near opening, with necessary fixing / welding at junctions and fixing
the frame to wall with steel dash fasteners of 8 mm dia, 75 mm long bolt, including providing
with two coats of approved steel primer etc. The tubular framework to have welded
connections, minimum 20mm fillet weld on each side.

In order to minimize visibility of screws panels of size as per drawing supported on MS flats
20 x 6 mm at top & bottom are to be made with 80 x 12 mm & 32.5 x 12 mm thick timber
slats with a groove of 15mm between slats in pattern as per drawing with stainless steel
screws from the rear. MS flats shall be painted with two coats of enamel paint over two coats
of approved steel primer. Timber panels shall be preferably made of timber of large width;
the minimum width and thickness of the panel shall be same as specified in the drawings.
The grains of timber panels shall be sawn in the directions of grains & shall run along the

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longer dimensions of the panels. All panels shall be of the same species of timber unless
otherwise specified. Sawing shall be truly straight and square. The timber shall be planed
smooth and accurate to the required dimensions.

These timber slat panels shall be fixed to the tubular frame as per pattern shown in drawing
with self tapping stainless screws.The slats to be backed with black dyed jute upholstery
fabric (not hessian) held on 24G x 10mm wire mesh and 50mm thick resin bonded glass wool
(24 kg/m3) cut to size and inserted in GI framework held on 24Gx12 GI wire netting.Finally
the slats shall be wax polished after wood filler and sand papering to a smooth finish in its
natural colour complete as per drawing, specifications and direction of Engineer-in-Charge.

ACOUSTICS DOOR

Providing & fixing of 77mm thick Nonmetallic, Asbestos Free Accoustic cum fire/smoke door
of 120 minutes fire rating, conforming to BS: 476 part 22 IS: 3614 part -II , suitable to achieve
minimum 32-35db, sound reducing properties suitable for fixing in wooden door frame of
suitable section 145X75 mm made out of Ist Class Ivory Cost ( SUDAN TEAK) hard wood and
the shutter comprising of 2nos 12 mm thick non -combustible fire rated boards, sandwiching
41 mm thick fire resistant & accoustic insulation filler. The shutter is faced with 4mm thick
matching wood veneered ply facing on both sides of door in approved make, colour & shade
and wooden lipping all around the shutter with heat activated intumescent fire seal strip of
size 20x4mm on all sides except bottom ( for smoke sealing) both in frame & shutter. The
door shall be fixed with Acoustics seals (RAVEN /LORIENT /BECKER FS) for sound reduction
properties. The shutter is fitted with the frame with the help of SS ball bearing hinges of size
100x89x3mm (Minimum 04 nos. per leaf). The rate includes providing and fixing of
Accoustic seals as per the details , appropriate hardware including fire rated hinges, Satin
Stainless steel 304 grade mortice dead lock, pull handle of size 600mm, door closer & Tower
bolt of Dorma/ Kich or as approved equivalent make, Anchor fastener , Painting/polishing
of approved make etc., all as per drawing and direction of Engineer-in-charge.This item also
includes providing & fixing of 4 nos. of Galvanized Iron Hold fasts 40mm x 5mm flat 300 mm
long including fixing to frame with 10 mm dia. bolt, nut and wooden plug and embedding in
cement concrete 1 : 2 : 4 block of size 30 x 10 x 15 cm.

TOILET CUBICLE SYSTEM

Supply and installation of Toilet cubicle system of width and depth as per manufacturers
specifications / Architectural drawings. Toilet cubicle system consists of two parts –
pilasters & doors and intermediate panels. All Intermediate panels shall be of 18 mm thick
solid compact laminate as one continuous panel without any joints and pilasters & Doors
shall be made of solid compact laminate 18 mm thick with edges chamfered. Cubicle height
to be maximum 2100 mm. (Height is including 110 gap mm from bottom) & Door standard
width is 600 mm.The product should have Green Guard & IGBC Certificate.

Made from solid grade compact high pressure laminate as per IS:2046 manufactured under
high specific pressure > 5 MPa and temperature >120oC with bunch of kraft papers
impregnated with thermosetting phenolic resin and decorative papers made of Alpha
cellulose fiber impregnated with thermosetting melamine resin which provide superior
scratch, abrasion, heat, chemical, impact, graffiti & moisture resistance along with anti-
bacterial properties. Panels have a black core that when machined, presents a distinctive
black edge. Top surface on both sides is melamine coated which is scratch and impact
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 184

resistant. Panel thickness 18 mm. Design no. as specified by Arch. / Engr. in suede finish. Size
of panels to be as per drawing.

All pilasters are to be supported by stainless steel “L” bracket with floor anchor bolt, which
is concealed with stainless steel flat box-up of height 100 mm. The stainless steel box-up
shoe is in SS Grade 316. Fixing of intermediate panels to the wall shall be with stainless steel
grade -304 U channel section fixed into the wall with SS-304 screw inserts.

HARDWARE & ACCESSORIES

(1) Door Knob in Grade-304
(2) Spring Loaded butt Hinges in Grade-304 with cover
(3) Thumb turn lockset with Occupancy indicator in Grade-304
(4) Coat hook with rubber door stopper in Grade-304
(5) Stainless steel "U" & "F" channel & " L " plate all in Grade-304
(6) Stainless steel shoe box leg 18 mm in Grade-316
(7) SS screw 304 grade with P.V.C wall plug
(8) Rubber lining for groove

Installation : As per detailed Architectural Drawings, Manufacturer Technical Specification

and as directed by Engineer-in-charge.

All the material supplied and installed shall be as per the description and specifications in
the item. The shop drawing showing Detailed plans and elevations, details of framing
members, anchoring methods, clearances, hardware, and accessories for individual toilets
as per site condition shall be submitted by the contractor for obtaining approval of the
Engineer-in-charge before start of work. the work to be done authorized/Trained installer
of manufacturer or as decided by E.I.C

STEEL FIRE DOORS(INSULATED & NON-INSULATED)

Fire Rated Insulated Doors

Providing and fixing of Hollow Metal Insulated fire rated doors as per IS 3614 part-1, for
stability, integrity & insulation. Pressed galvanized steel confirming to IS 277 with the
following specification. Recommended fire door shall be tested to IS 3614 part 2 / ISO 834-
1 Part 1 / BS476 Part 20 & 22, CBRI / Cerifire or third party certified or equivalent lab, for
maximum rating of 120mins with 30minutes of insulation, in latched /unlatched condition
(if used with deadbolts and pull handles). Labeled doors with certification shall be with
vision glass as a part of complete assembly. Manufacturer test certificate shall cover doors
both single and double leaf and all doors supplied shall be within the tested specimen,
deviation in specification and sheet thickness other than what is mentioned in the test
certificates are not allowed. Proper label confirming the type of door and the hourly rating
is mandatory from Approved manufacturer or equivalent.
Size of door fame and shutter shall be as per the manufactures specification with 2 Hrs
fire rating. Door frame shall be single rebate grooved profile of size 125 x 60mm made out
of 1.60mm (16gauge) minimum thick galvanized steel sheet. Frames shall be mitered and
field assembled with self-tabs. Frames to have in build grooved sealing system and shall be
site fitted with fire rated EPDM gasket as standard. All provision should be mortised, drilled
and tapped for receiving appropriate hardware. Frames should be provided with back plate
bracket and anchor fasteners for installation on a finished plastered masonry wall opening
including necessary 3mm/4.8 mm thick steel hinge reinforcement, 1.2 mm thick steel lock

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 185

strike reinforcement with tapped holes welded to the frame and 1.2mm thick mortar guard
at the back of all hardware cutout in the frame. The frame will have a provision of G.I. Anchor
fastners 14 nos ( 5 each on vertical style & 4 on horizontal style of size M10 x 80 ) suitable
for fixing in the opening along with Factory made Template for SS Ball Bearing Hinges of
approved Size.. The frames should be zinc phosphated and finished with minimum 50 micron
Thermosetting Powder Coating of approved colour and shade / finish in desired RAL Shade.
Frames shall be filled with fire rated puff.
Door leaf shall be 46mm thick fully flush double skin door, insulated with or without
vision lite as per GFc drawing. Door leaf shall be manufactured from 1.2mm (18guage)
minimum thick galvanized steel sheet. The internal construction of the door should be rigid
reinforcement pads for receiving appropriate hardware. The infill material shall be high
density insulation material. Intumescent seals 15x2mm to be provided all around the door
in addition to the grooved smoke seal. All doors shall be factory prepped for receiving
appropriate hardware and provided with necessary reinforcement for hinges, locks, and
door closers. The edges should be interlocked with a bending radius of 1.4mm. For pair of
doors integrated astragals has to be provided on the meeting stile for both active and inactive
leaf. Vision lite wherever applicable should be provided as per manufacturer’s
recommendation with a clip-on arrangement. The glass should be 6mm clear borosilicate
fire rated glass of relevant rating of the door. The shutters should be zinc phosphated and
finished with minimum 50 micron Thermosetting Powder Coating of approved colour and
shade / finish in desired RAL Shade.

All doors and frames should be zinc phosphated and finished with minimum 50 micron
Thermosetting Powder Coating of approved colour and shade / finish in desired RAL Shade
and shall have passed minimum 500 hours of salt spray test.

Item shall include supply and installation of door and hardware as a complete assembly as
mentioned in the door and hardware schedule. Once frame installed should be filled with
PUF as recommended by the manufacturer .

120Mins Fire Rated Door Single/Double leaf of size as per GFC drawing with vision panel
200x300 with hardware set stainless steel grade 304 ball bearing butt hinges, panic bar with
trim for single or double leaf door, Fire rated surface mounted door closer, door coordinator,
groove & intumescent seal for smoke, all hardware are as per List of preferred makes &
inclusive of PUFF Grouting.

All hardware fittings should be minimum two hour fire rating.

Fire Rated Un-Insulated Doors

Providing and fixing of Hollow metal Un-Insulated fire rated doors as per IS 3614 part-1, for
stability and integrity. Pressed galvanized steel confirming to IS 277 with the following
specification. Recommended fire door shall be tested to IS 3614 part 2 / ISO 834-1 Part 1 /
BS476 Part 20 & 22, CBRI / Cerifire or third party certified or equivalent lab, for maximum
rating of 120mins, in latched /unlatched condition (if used with deadbolts and pull handles).
Labeled doors with certification shall be with vision glass as a part of complete assembly.
Manufacturer test certificate shall cover doors both single and double leaf and all doors
supplied shall be within the tested specimen, deviation in specification and sheet thickness
other than what is mentioned in the test certificates are not allowed. Proper label confirming
the type of door and the hourly rating is mandatory from Approved manufacturer or
equivalent.

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 186

Size of door fame and shutter shall be as per the manufactures specification with 2 Hrs fire
rating. Door frame shall be single rebate grooved profile of size 125 x 60mm made out of
1.60mm (16gauge) minimum thick galvanized steel sheet. Frames shall be mitered and field
assembled with self-tabs. Frames to have in build grooved sealing system and shall be site
fitted with fire rated EPDM gasket as standard. All provision should be mortised, drilled and
tapped for receiving appropriate hardware. Frames should be provided with back plate
bracket and anchor fasteners for installation on a finished plastered masonry wall opening
including necessary 3mm/4.8 mm thick steel hinge reinforcement, 1.2 mm thick steel lock
strike reinforcement with tapped holes welded to the frame and 1.2mm thick mortar guard
at the back of all hardware cutout in the frame. The frame will have a provision of G.I. Anchor
fastners 14 nos ( 5 each on vertical style & 4 on horizontal style of size M10 x 80 ) suitable
for fixing in the opening along with Factory made Template for SS Ball Bearing Hinges of
approved Size.. The frames should be zinc phosphated and finished with minimum 50 micron
Thermosetting Powder Coating of approved colour and shade / finish in desired RAL Shade.
Frames shall be filled with fire rated puff.

Door leaf shall be 46mm thick fully flush double skin door, Un-insulated with or without
vision lite as per GFc drawing. Door leaf shall be manufactured from 1.2mm (18guage)
minimum thick galvanized steel sheet. The internal construction of the door should be rigid
reinforcement pads for receiving appropriate hardware. The infill material shall be
structural small cell resin bonded Honey comb craft paper treated with appropriate fire
retardent paint. All doors shall be factory prepped for receiving appropriate hardware and
provided with necessary reinforcement for hinges, locks, and door closers. The edges should
be interlocked with a bending radius of 1.4mm. For pair of doors integrated astragals has to
be provided on the meeting stile for both active and inactive leaf. Vision lite wherever
applicable should be provided as per manufacturer’s recommendation with a clip-on
arrangement. The glass should be 6mm clear borosilicate fire rated glass of relevant rating
of the door. The shutters should be zinc phosphated and finished with minimum 50 micron
Thermosetting Powder Coating of approved colour and shade / finish in desired RAL Shade.

All doors and frames should be zinc phosphated and finished with minimum 50 micron
Thermosetting Powder Coating of approved colour and shade / finish in desired RAL Shade
and shall have passed minimum 500 hours of salt spray test.

Item shall include supply and installation of door and hardware as a complete assembly as
mentioned in the door and hardware schedule. Once frame installed should be filled with
PUF as recommended by the manufacturer.

120Mins Fire Rated Door Single/double leaf of size as mentioned in GFC Drawing with vision
panel 200x300mm with hardware set stainless steel grade 304 ball bearing butt hinges,
stainless steel grade 304 pull handle of 300mm long on both side, mortise dead lock with
both side cylinders, Fire rated surface mounted door closer, groove seal for smoke, all
hardware are as per List of preferred makes & inclusive of PUFF Grouting.All hardware
fittings should be minimum two hour fire rating.

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 187

MS STRUCTURAL STEEL WORK :-

Structural steel of grade E250 confirming to IS2062 shall be used for M.S. Steel ladder, M.S.
Hand rail, M.S. Insert Plates / Base / gusset / stiffener plates as per Architectural / Structural
drawings. M.S. Tube (Pipe / square / rectangular) sections shall be of grade E310 for Pipes
/ E350 for RHS & SHS shall be used for Architectural Pergolas, Façade members if any as per
corresponding Architectural / Structural drawings.

MS support (angle, tube, channel, etc.) at wall / ceiling for services line (Plumbing, Electrical,
HVAC, etc.) shall be provided as per approved shop drawing, design and direction of E-I-C.
MS supports to be fixed with 100x8mm anchor fasteners in concrete / hold fast with grade
of concrete as shown in drawing.

Mild steel round holding down bolts with nuts and washer plates shall be as per GFC
drawing.

MS Steel railing shall be provided as per details, locations shown in GFC drawing. MS works
in Monkey ladder for O.H.T.machine Room terrace, Mumty terrace & Plumbing shaft as per
architectural drawing.

Library & Data centre : Fire Escape staircase shall be made with MS structural steel with MS
railing as per detail given in GFC structural / Architectural drawing.

Architectural Pergolas shall be made at various locations as shown in architectural drawing

with M.S. Tubular (Pipe / square / rectangular) sections of sizes & design as per detailed GFC
drawing.

M.S. Screen with gates shall be provided at various locations as per details provided in the
architectural GFC detailed drawings using M.S. tubular section, solid M.S. square bar , M.S.
plates etc as required. The gate shall be fixed with MS heavy duty hinges, all hardware such
as heavy duty MS Aldrops, tower bolts etc, as shown in GFC drawings or as directed by E-I-C
/ Architect.

MS support (angle, tube, channel, etc.) at wall / ceiling for services line (Plumbing, Electrical,
HVAC, etc.) shall be provided as per approved shop drawing, design and direction of E-I-C.
MS supports to be fixed with 100x8mm anchor fasteners in concrete or as shown in drawing

All MS/Structural Steel works shall be finished with acrylic aliphatic polyurethane paint as
per specification given

General specifications/points to be followed by Contractor for doing MS / Structural

Steel work :-
Material Report : Prior to start of delivery of structural steel required for contractor shall
submit the following to the Engineer-In-Charge for review.
a) Certified copies of mill test reports including chemical analysis and physical properties as
required by the applicable Indian Standards for each consignment of steel.

Shop/Fabrication Drawings : Before commencement of any structural steel fabrication

work, the contractor shall submit the following to the Engineer-In-Charge for his approval:
a) Fabrication drawings including details of connections.

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b) Assembly, erection and installation drawings and manuals indicating the sequence of
work, welding and bolting procedure to be used. Cambers for trusses and large span girders
shall be shown.
c) For composite construction the details and calculation of details and calculation of false
work and forms supporting the concrete work in steel structure shall be submitted.
d) The drawings prepared by the contractor and all subsequent revisions etc. shall be at the
cost of contractor for which no separate payment will be made.

Handling & Storage

Structural steel shall be stored out of mud and dirt and proper drainage of the storage area
shall be provided. Protect from damage or spoiling by adjacent construction operations.

Fabricated steel shall not be handled until the paint has thoroughly dried. Care shall be taken
to avoid paint abrasions and other damager. Steel work shall be transported in the largest
practical lengths and in such a way as not to overstress the fabricated sections. All pieces
bent or otherwise damaged shall be replaced by the Contractor at his own cost.

As far as practicable, stacking of fabricated steel shall be done in sequence of erection. But
heavy members shall not be stacked on top of the light ones.

Cutting
Gas Cutting shall normally be permitted for mild steel only. Gas cutting of high tensile steel
may be permitted provided special care is taken to leave sufficient metal to be removed by
matching so that nil metal that liar, boon hardened by flame is removed. Gas cutting shall
preferably be done by machine, Hand flame cutting; may only be permitted subject to the
approval of the Engineer-In-Charge. Gas cut edges shall be free of gouge. Any gouges that
remain after cutting shall be removed by grinding.

For tubular construction cutting of the pipe and preparation of joint surface shall be done in
a neat manner for a good fit up. The ends of the tubes may be flattened or otherwise framed
for connections provided that the methods adopted for such flattening do not injure the
material. The change of section shall be gradual.

Holing
Holes shall preferable be done by drilling. Punching shall not be restored to unless previously
approved by the Engineer-In-Charge. In any case, punching of holes in materials having a
thickness in excess of the connector diameter or in the materials thicker than 16mm shall
not be permitted. Where punching is permitted the holes shall be punched 3 mm less in
diameter than the required size and reamed after assembly to the full size.

Steel members adjustment shall be provided with slotted holes as shown on the drawings.
Suitable templates shall be used for proper location of the holes.

Fabrication Tolerances : Unless otherwise shown on the drawings, the fabricating tolerances
shall generally be as follows:
a) Compression members shall not deviate from straightness by more than 1/ 1000 of the
axial length between points which are to be laterally supported.
b) A variation of 1 mm is permissible in the overall length of members with both ends
finished for contact bearing, Members without ends finished for contact boarding
which are to be framed together in parts of the structure, may have a variation from

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the detailed length not greater than 2mm for members 10 metres or loss in length and
not greater than 3 mm for members over 10 metres In length.

Assembly
All connections shall be either bolted or welded as shown on the drawings. Contractor shall
not redesign or alter any connection without prior approval of Engineer-In-Charge.

The component parts shall be assembled in such a manner that they are neither twisted nor
otherwise damaged and shall be prepared so that the specified camber if any is provided.
Drafting done during assembly shall not distort the metal or enlarge the holes. Poor matching
of holes shall be cause of rejection. However if permitted by the Engineer-In-Charge, holes
that must be enlarged duo to mismatching shall be reamed.

Bolting
High strength bolts shall be used in bearing or friction as shown on the drawings.
Anchor bolts shall be set by use of templates secured firmly in place to permit true
positioning of the bearing plates and assemblies. When in drawings anchor bolts are shown
to be installed in sleeves, the sleeves shall be completely filled with grout.

Welding
Welding shall be done in accordance with IS:816.
Welding procedures shall be bored on the specific analysis of any given heat of steel (based
on the certified mill test reports) and shall be subject to the review of the Engineer-In-
Charge.
These procedures shall call for one or all of the following
a) Proper bead shape.
b) Minimized penetration to prevent dilution of the weld metal with the alloy elements.
c) Preheating, controlled interpass temperature and controlled heat input.

Welding shall be performed only by qualified and tested welders specifically trained and
experienced for the type of job required to execute the welding work to the complete
satisfaction of the Engineer-In-Charge. However periodical testing of welders shall be done
as per IS 817, IS 7310 (Part I) and IS 738 (Part I).

Use of standard weld symbols as adopted by IS : 813 is mandatory. Pre-qualified joints which
are detailed, prepared and welded in accordance with the requirement of IS : 816 shall be
invariably used.

Structural welding shall not commence until joint elements are bolted or tacked in intimate
contact and adjusted to dimensions shown with allowance for any weld shrinkage that is
expected. Welding sequence shall be planned and controlled to minimise undue stress
Increase or undue distortions in restrained members. Heavy sections and those having a high
degree of restrain shall be welded with low hydrogen type electrodes.

If copper wire spacers are used between two surfaces to be welded to reduce transverse
stresses in the weld, care shall be taken that it does not mix with the weld metal.

Concave bead shape shall be avoided. Ratio of weld width to weld depth shall preferably vary
from a minimum of 1 to 1, to a maximum of 1.4 to 1.

width-of-weld

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——————— = 1 to 1.4
depth of fusion

Subsequent to fabrication, the overlapping or contacting surfaces, or other closed sections

(such as tubular, box section) which are inaccessible to painting shall be seal welded. When
the end of the tube is not automatically sealed by virtue of its connection by welding to
another member the end shall be properly and completely sealed. Before sealing, the inside
of the tube shall be made dry and free from loose scale.

Order of assembly of the tubular sections shall consist of welding the tensile member to the
main member first. Compression members shall be cut back to overlap the tensile member
and then welded to both of these members.

No welding shall be done when the surface of the member is wet nor during periods of high
wind. No welding shall be done on base metal at a temperature below –5oC. Base metal shall
be preheated to the temperature as per relevant IS codes.

Each layer of multiple layer weld except root and surfaces runs may be moderately peened
with light blows from blunt tool. Due are should be taken to prevent scaling or flaking of weld
and base metal from over peening.

Electrodes other than low-hydrogen electrodes shall not be permitted for thicknesses of 32
mm and above.

Tolerances : The dimensional and weight tolerances for rolled shapes shall be in accordance
with IS 1852 for indigenous steel and equivalent applicable codes for imported steel. The
tolerance for fabrication of structural steel shall be as per IS 7215.

End milling : Where compression joints are specified to be designed for bearing, the bearing
surfaces shall be milled true and square to ensure proper bearing and alignment

Inspection
The contractor shall give due notice to the Engineer-In-Charge in advance of the work getting
ready for inspection. All rejected material shall be promptly removed from the site.

No materials shall be painted or erected or despatched to site without inspection and

approval by the Engineer-In-Charge.

The Contractor shall provide all the testing and inspection services and facilities for shop
works except where otherwise specified.

For fabrication work carried out at site, the same standard of supervision and quality control
shall be maintained and inspection and testing shall be conducted in a manner satisfactory
to Engineer-In-Charge.

Testing of welds
Welds shall be inspected as per CPWD Specification for flows by any of the methods given
below The choice of method shall be determined by Engineer-In-Charge.

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 191

Liquid penetrate inspection : These tests shall be carried out as per IS codes. All defects
shown shall be repaired and rechecked.

Radiographic Inspection : All full strength butt weld shall be radiographed in accordance
with the recommended practice from radiographic testing as per relevant IS codes.

Test failure : In event of failure of any member to satisfy inspection or test requirement, the
contractor shall notify the same to Engineer-In-Charge. Before repairing contractor shall
obtain permission from Engineer-In-Charge. The quality control procedures to be followed
to ensure satisfactory repairs subject to approval of Engineer-In-Charge.

The contractor shall maintain records in all inspection and testing which shall be made
available to the Engineer-In-Charge as and when required.

Erection
As far as possible, the Contractor shall deliver the fabricated steel work to the site in the
same sequence as that which he wishes to follow for the erection. Dispatch should be
scheduled to avoid cluttering up of the site. The bolts required for erection shall be bagged
according to size prior to dispatch.

All structural work shall be erected in accordance with IS : 800/IS : 806 and IS : 1915 and as
per the approved erection drawings. The Contractor shall be responsible for setting out the
works. The suitability any capacity of all plant and equipment used for erection shall be to
the Satisfaction of Engineer-In-Charge. These shall be regularly serviced and maintained.
Occupational safety practices shall be strictly adhered to and shall be to the satisfaction of
the Engineer-In-Charge.

No permanent bolting or welding shall be done until proper alignment has been obtained.
Erection of the parts with any moderate amount of reaming, chipping or cutting shall be
immediate reported to the Engineer-In-Charge. The steel work shall be rejected unless
corrective action is approved by the Engineer-In-Charge.

No erection shall be permitted more than 2 story above a complete bolted ands/ or welded
floor or above a decked surface.

Placement of joists shall not start until the supporting work is secured. Temporary bridging,
connections and anchors shall be provided to assure lateral stability during erection.
Bridging to steel joists shall be installed immediately after joist erection, before any
construction loads are applied. Horizontal or vertical bridging shall be provided in
accordance with the type of span of the joists. Ends of the bridging lines shall be anchored at
top mid bottom chords whom terminating to walls or beams.

Erection Tolerances : The Contractor shall control the erection of steel structures in such a
way that in level no components are more than 10mm out of their correct position nor shall
the lines of the structure depart from straightness and plumb by more than a 3mm in metres.
The error shall be measured from the designed position of level given by the dimensions and
co-ordinates on the drawings.

In structures where movements due to temperature change considerable the deviations

listed above will apply at the morning position of the member being checked.

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 192

Feild Modification
Correction to accommodate minor misfits in steel structure by moderate use of drift pins and
reaming will be permitted. Errors that cannot be corrected by these measures, but require
modifications must be reported immediately to the Engineer-In-Charge along with
Contractors proposed solution.

Grouting under base plates

Grouting under base plates shall be done after erection of the structural steel unless
otherwise approved by the Engineer-In-Charge. All bearing plates, bearing assemblies and
masonry plates shall be steel level and to the elevations shown on plans. These shall be
shimmed with approved means and grouted to assure full bearings on the supporting
substrata regardless of the tolerances otherwise permitted.

The grout to be used in superstructure stanchion bases shall be cement mortar 1: 2 (1

cement: 2 coarse sand) and shall have a 28 days compressive strength of at least 300 kg/sqm.
The surface which are to receive the grout shall be thoroughly cleaned immediately prior to
the grouting operation. The grout shall be carefully worked under the base plates and shall
completely fill the space under the base plates. Air pockets in the grout packing shall
beavoided.

After the grout has had its initial set, the grout shall be cut back flush with the base plate and
the surplus grout shall, be removed. Before leaving the site the Contractor shall retighten the
nuts of all anchor bolts.

Cleaning & Paint touching

After erection, exposed surfaces of filed connections, unpainted areas adjacent to tie
connections and damaged area in the shop coat shall be cleaned to the same standards
required or the shop cost. These shall then be painted with the same used in the shop coat.

Inserts & Embedments : Various steel inserts and embedment are required under the
Contract to be fabricated, positioned and secured firmly into place inside the formwork prior
to concrete being poured. There are also requirements of jointing, threading, bolting and
inserts and embedment of different concrete and structural steel elements in order to
establish structural continuity and connection. Great care shall be exercised by the
Contractor in executing all aspects of the work related to inserts and embedment - including
tolerances so that the final assembly of the concrete elements can meet satisfactorily the
continuity and contiguity requirements intended in the structure.

MS perforated Sheet for Access corridor:

2mm thick MS perforated Sheet on MS Tubular framework with 6mm dia holes at 10mm c/c
pitch @ 45 degrees etc. complete shall be provided as per architectural drawing or as
directed by Architect / Engineer- in-Charge. Acrylic Aliphatic Polyurethane Paint to be done
as per specifications.
Rolling shutters : Rolling shutters shall be of approved make, made of 80x1.25 mm size M.S.
laths, interlocked together through their entire length and jointed together at the end by end
locks, mounted on specially designed pipe shaft with brackets, side guides and arrangements
for inside and outside locking with mechanical device chain and crank operation for
operating rolling shutters complete, including providing and fixing necessary 27.5 cm long
wire springs manufactured from high tensile steel wire of adequate strength conforming to
IS: 4454 - part 1 , ball bearing &M.S. top cover 1.25 mm thick for rolling shutters . Rolling

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 193

shutters shall be partly grilled or partly fixed as per architectural GFC drawing. Grilled
rolling shutters manufactured out of 8 mm dia M.S. bar instead of laths as per design
approved by Engineer-in- charge.

Acrylic Aliphatic Polyurethane Paint on M.S Structural Steel

On MS Structural Steel Coming in Access Corridor

Surface Preparation : Preparing the structural steel surfaces to ensure complete removal
of mill scale by grit / sand blasting confirming to SA 2.5 Swedish Standard. to achieve rust
free surface. The surface should be free of all visible oil, grease, dust, dirt, mill scale, rust,
oxides, corrosion products and other foreign matter. The entire work shall be carried out as
per manufacturers specification or as per directions and to the satisfaction of the Engineer-
in-charge.

Anti-corrosive protective paint & primer :

(a) First coat of two component Zinc Silicate Primer ,with minimum dry film thickness
(DFT) of 65 microns and a Zinc content of 80% on dry film, The primer shall be applied
by spray only. Brushes shall be used only for touch-up work.
(b) Second Coat of High solid, micaceous iron oxide pigmented epoxy coating for structural
steel surfaces with minimum dry film thickness of 100 microns per coat and Volume
solid 80%
(c) Finish coat shall be one coat of two component, high solid acrylic aliphatic
polyurethane Satin finish with minimum dry film thickness (DFT) of 60 microns with
Volume Solid approx 64% complete as per manufacturers specification, The entire
work shall be carried out as per directions and to the satisfaction of the Engineer-in-
charge.
Total minimum DFT of the system shall be 225 Microns

On MS Structural Steel coming in any other building other than Access

Corridor
Surface preparation : Preparing the Structural steel surfaces to ensure complete removal
of mill scale by ST2/ST3 using power / manual tool (Hand tool cleaning is a method of
preparing steel surfaces by the use of power hand tools or non-power hand tools. Hand tool
cleaning removes all loose mill scale, loose rust, loose paint, and other loose detrimental
foreign matter. The entire work shall be carried out as per manufacturers specification or as
per directions and to the satisfaction of the Engineer-in-charge.

Anti-corrosive protective paint & primer :

(a) Two coat of two component Surface Tolerant Epoxy Primer with minimum dry film
thickness (DFT) of 150 microns( 75 microns each coat) and Volume Solid of 80% , The
primer shall be applied by spray only. Brushes shall be used only for touch-up work.
(b) Final coat shall be followed by applying one coat of two component, high solid acrylic
aliphatic polyurethane Satin finish coat of approved list brand, shade and quality with
minimum dry film thickness (DFT) of 60 microns with Volume Solid approx 64%, The entire
work shall be carried out as per directions and to the satisfaction of the Engineer-in-charge.
Total minimum DFT of the system shall be 210 Microns
STAINLESS STEEL WORK

STAINLESS STEEL GRADE AISI 316 “WELD FREE” RAILING

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 194

Stainless steel grade AISI 316 “weld free” railing are coming at different location as
mentioned in GFC drawing are following

a) S.S Railing comprises of 50 mm dia tube top handrail, 38 mm dia pipe single vertical
balusters, 4 Nos. mid rail of S.S. tube dia 19mm.
b) S.S Railing comprises of 50mm dia Handrail fixed on 10x50x210mm ( or approved
equivalent size ) S.S. Solid baluster with glass holding accessories (including top bracket
to hold hand railing), placed at maximum 1200mm c/c along with 12mm thick
toughened glass connected with baluster with special glass holding fixtures.
c) S.S Railing comprises of 50 mm dia tube top handrail, Single vertical balustrade SS Flat
50 X 10 mm minimum thickness, 3 nos. mid rail of SS tube 19mm.

Detail description
A. Providing modular passivated satin stainless steel “weld free” railing system at all
locations & levels ( as per architectural drawings ) of approved size and shape conforming
to grade AISI 316 with all modular accessories using flexible bends & modular system or
expansion & ball socket system as per manufacturer’s specifications or as per detailed
Architectural Drawings, Manufacturer Technical Specification and as directed by
Engineer-in-charge. Load calculations & Material test reports for SS 316 grade to be
submitted by vendor. The material comprises of top handrail shall be S.S. tube dia 50 mm
x 1.5 mm (+/-0.1mm) minimum thickness, single vertical balusters shall be of 38 mm dia
pipe of 1.5 mm (+/-0.1mm) minimum thickness at 1m to 1.2 m c / c & at turning with 4
Nos. mid rail of S.S. tube dia 19mm x 1.5 mm (+/-0.1mm) minimum thickness and
mounted all balusters with blind rivet.The balusters may be fixed on the horizontal or
vertical surface as desired with minimum 6 mm thick SS base plate & base plate shall be
concealed with suitable SS 316 grade cover cap as per manufacturers specification.
Baluster to hold handrail using flexible bends & modular system or expansion & ball
socket system for all joints, turns etc. The entire fixing shall be completed as per
manufacturer's specification & as per architectural drawing and approval of Engineer-in-
charge.

B.Supply and installation of AISI 316 Grade Stainless Steel satin finish Knock Down railing
system comprising Ø 50mm Handrail fixed on 10x50x210mm S.S. Solid baluster with
glass holding accessories (including top bracket to hold hand railing), placed at maximum
1200mm c/c along with 12mm thick toughened glass connected with baluster with
special glass holding fixtures. The Glass height should be taken as minimum 845mm. The
balustrade would be fixed onto floor with SS 316 Grade base plate of 100x60x8mm
thickness. Base plate shall be concealed with suitable S.S. 316 grade cover Cap so that the
mounting anchor fasteners are not visible after installation. Wall thickness of all Pipes
shall be taken as 1.5mm along with all visible components developed in High Grade S.S.
and whenever required, joints to be filled with bushings for extra strength. Railing height
to be taken 1000 mm from floor level. The entire fixing shall be completed as per
manufacturer's specification & as per architectural drawing and approval of Engineer-in-
charge.

C. Providing & fixing modular passivated Satin stainless steel finish“weld free” railing system
at suitable locations at all levels of approved size and shape conforming to grade AISI
316.Top Handrail Shall be SS Tube of minimum dia 50 mm X 1.5 mm minimum thickness
, Single vertical balustrade shall be of SS Flat 50 X 10 mm minimum thickness at 1m to
1.2m C/C & at turning with 3 nos. mid rail of SS tube 19mm X 1.5mm minimum thickness

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 195

fix with connectors to all balusters to support infill as per manufacturers specification,
The balustrade will be fixed on the vertical surface ( side mount ) with SS 304 grade wall
bracket by SS 304 M10x100 Hilti fasteners & Anchor (M10X70 mm ) or as per
manufacturers specification. Entire fixing shall be completed as per manufacturer's
specification & as per architectural drawing and approval of engineer -in-charge .Load
calculations & Material test reports for SS 304 grade to be submitted by vendor. Railing
height will be 1000 mm from FFL.

Samples & Shop drawings : All work to be done as per GFC Drawing. Sample including
complete modular system & shop drawings shall be submitted by the contractor for approval
prior to the execution of work.

The works also protected by wrapping bubble sheet till completion / handing over of the
building whichever is later. If any scratches and damages occurs shall be replaced or rectified
at their own cost and nothing extra shall be paid against the same.

STAINLESS STEEL GRADE 316 WALL LINING

Providing, fabricating & fixing in position as per detail given in GFC drawing, gutter & drain
wall lining ( minimum 2 mm thick SS sheet ) & other similar work as called for with Stainless
Steel of SS Grade-316 consisting of S.S. sheet, S.S. flats, S.S. plate, angles, S.S. hinges
etc.including all fixing accessories such as S.S. inserts etc., all cutting, bending, welding,
grinding, drilling, tapping and all other incidentals,and approved buffing to stainless steel
members as directed by the Engineer-in-charge. complete.

Freight Lift : Stainless steel grade 316 jambs over M.S. framework shall be provided at all
levels of freight lift as per GFC drawing.

Note : All stainless steel works shall be executed through authorized/trained/recommended

installer of manufacturer or as decided by Engineer in charge.

FLOORING
Floor finishing margin shall be 100 mm out of which lower part 50 mm is left for services (
Raceways, conduits etc ) filled with cement concrete 1:3:6/1:2:4 as shown in GFC drawing&
balance 50mm thick is for floor finishing / leveling requirement shall be catered with 1:4
cement mortar up to desired level for which nothing extra shall be paid.
The works should be protected by laying 2mm thick POP over paper till completion /
handing over of the building whichever is later. If any scratches and damages occur they shall
be replaced or rectified at their own cost and nothing shall be paid against the same.
All flooring works with or without pattern shall be executed as per design/ mockup
approved by Architect and E-I-C.

IPS Flooring (Cement Concrete Flooring ) : 52 mm thick cement concrete flooring with
concrete hardener topping,under layer 40 mm thick cement concrete 1:2:4 (1 cement : 2
coarse sand : 4 graded stone aggregate 20 mm nominal size) and top layer 12 mm thick
cement hardener consisting of mix 1:2 (1 cement hardener mix : 2 graded stone aggregate 6
mm nominal size) by volume, hardening compound mixed @ 2 litre per 50 kg of cement or
as per manufacturer's specifications. This includes cost of cement slurry, but excluding the
cost of nosing of steps etc. complete.

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 196

Cement Plaster Skirting : 18 mm thick Cement plaster skirting up to 30 cm height, with

cement mortar 1:3 (1cement : 3 coarse sand), finished with a floating coat of neat cement.

Floor strips : Aluminium strip 35 mm wide and 3 mm thick to be fixed in a pattern as shown
in drawings or as directed by E-I-C in joints of cement concrete floors.

Vacuum dewatered flooring : C.C. flooring of mix M 35 or as mentioned in drawing.The

ready mixed concrete shall be laid and finished with screed board vibrator , vacuum
dewatering process and finally finished by floating, brooming with wire brush etc. complete
as per specifications and directions of Engineer-incharge.

Cement Plaster Skirting : 18 mm thick Cement plaster skirting up to 30 cm height, with

cement mortar 1:3 (1cement : 3 coarse sand), finished with a floating coat of neat cement.

Polished Kota / Polished Tandur stone/ Sand blasted leather finish kota / Sand
blasted leather finish Tandur stone / Polished Rajim / Sand blasted leather finish
Rajim stone / polished Mandana / Sand blasted leather finish Mandana stone with
cement mortar shall be provided in a pattern / combination at locations as shown in GFC
drawings and as per CPWD Specification.

Stone flooring with Epoxy joints ; Stone flooring with Epoxy joints shall be provided at
location & pattern as shown in GFC drawings including keeping the joints 4 mm wide & 6
mm deep alround & filled with approved quality epoxy grout as per manufacturers
specification in flooring. For detail refer GFC drawings

The treads & risers of steps should be in one single long piece up to 2000mm length as per
the drawing. Nosing / moulding in treads shall be as per GFC drawings.

Polished Mandana stone 30 mm thick : Polished mandana stone 30 mm thick shall be provided over all
external window cills, Parapet tops / low height walls, planters tops, coping etc including nosing / moulding as
per GFC drawing and design.

Polished kota / Tandur stone 25 mm thick : Polished kota / Tandur stone 25 mm thick shall be provided
over all internal window sills, planters tops, coping, cills etc including nosing / moulding as per GFC drawing
and design.

Bilha stone ( Polished / Unpolished ) shall be provided at plinth protection or similar

locations as mentioned in GFC drawings and as per CPWD Specification.

Gang-saw-cut 18mm thick Mirror Polished Granite & Sand blasted leather finish
Granite (of approved shade) for flooring, Skirting, Treads, riser and wall cladding:

Gang-saw-cut 18mm thick Mirror polished granite & Sand blasted leather finish Granite of
required size, approved shade, colour and texture laid over 20 mm thick base cement mortar
1:4 (1 cement: 4 coarse sand), joints treated with white cement, mixed with matching
pigment, epoxy touch ups, including rubbing, curing, moulding and polishing to edges to give
high gloss finish etc. complete at all levels.
The treads & risers of steps should be in one single long piece up to 2000mm length as per
the drawing. Nosing / moulding in treads shall be as per GFC drawings. Granite Wall Cladding
of height as shown in GFC drawing shall be provided at all lifts Fascias in all floors.
All skirting shall be 100 mm of same material unless specified. It should be flush with wall
with groove 10x6 mm.

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 197

Mirror Polish : Mirror polishing on Granite work / stone work shall be done where ever
required as shown in Architectural Drawings to give high gloss finish complete as per
manufacturers specification.

Sand blasted Leather finish : Sand blasted Leather finish on Granite work / stone work
shall be done where ever required as shown in Architectural Drawings to give high gloss
finish complete as per manufacturers specification.

20 mm thick Antiskid Industrial Vitrified tiles flooring & skirting : Flooring shall be
approved uniform colour and size (60cm x 60cm) 20 mm thick fullbody Antiskid Industrial
Vitrified tiles of approved make including cleaning the surface thoroughly with wire brush,
applying bonding coat with neat cement slurry on concrete surface and fixing tiles over 20
mm thick cement mortar bedding 1:4 (1 cement:4coarse sand) admixed with approved
admixture in proportion (50 kg cement+200 kg sand+3 litre admixture + requisite water)
with neat cement slurry admixed with approved admixture in proportion (50 kg cement+5
litre admixture + water) @ 3.3kg per sqm, keeping the joints 3 mm wide& minimum 6 mm
deep alround & filled with approved quality epoxy grout. Skirting shall be with same tiles
laid over 12 mm (average) thick cement mortar 1:3 (1 cement: 3 coarse sand) .

15 to 16 mm thick Antiskid Industrial Vitrified tiles flooring & skirting : Flooring shall
be approved uniform colour and size (60cm x 60cm) 15 to 16 mm thick fullbody Antiskid
Industrial Vitrified tiles of approved make including Cleaning the surface thoroughly with
wire brush, Applying bonding coat with neat cement slurry on concrete surfaceand fixing
tiles over 20 mm thick cement mortar bedding 1:4 (1 cement:4coarse sand) admixed with
approved admixture in proportion (50 kg cement+200 kg sand+3 litre admixture + requisite
water) with neat cement slurry admixed with approved admixture in proportion (50 kg
cement+5 litre admixture + water) @ 3.3kg per sqm, keeping the joints 3 mm wide&
minimum 6 mm deep alround& filled with approved quality epoxy grout. Skirting shall be
with same tiles laid over 12 mm (average) thick cement mortar 1:3 (1 cement: 3 coarse sand)
.

Antiskid full body Vitrified floor tiles 9 to 10 mm thick : Flooring shall be approved
uniform colour and size 60 X 30 cm / 60 X 60 cm 9 to10 mm thick Antiskid full body Vitrified
floor tiles of approved make including Cleaning the surface thoroughly with wire brush,
Applying bonding coat with neat cement slurry on concrete surface and fixing tiles over 20
mm thick cement mortar bedding 1:4 (1 cement:4coarse sand) admixed with approved
admixture in proportion (50 kg cement+200 kg sand+3 litre admixture + requisite water)
with neat cement slurry admixed with approved admixture in proportion (50 kg cement+5
litre admixture + water) @ 3.3kg per sqm. keeping the joints 3 mm wide & minimum 6 mm
deep alround& filled with approved quality epoxy grout.. Skirting shall be with same tiles
laid over 12 mm (average) thick cement mortar 1:3 (1 cement: 3 coarse sand).

Matt / polished / semi polished Vitrified floor tiles 9 to 10 mm thick : Flooring shall be
approved uniform colour and size ( 60 X 30 cm / 60 X 60 cm) 9 to 10 mm thick Matt /
polished / semi polished Vitrified floor tiles of approved make including Cleaning the surface
thoroughly with wire brush, Applying bonding coat with neat cement slurry on concrete
surface and fixing tiles over 20 mm thick cement mortar bedding 1:4 (1 cement:4coarse
sand) admixed with approved admixture in proportion (50 kg cement+200 kg sand+3 litre

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admixture + requisite water) with neat cement slurry admixed with approved admixture in
proportion (50 kg cement+5 litre admixture + water) @ 3.3kg per sqm, keeping the joints
3 mm wide& minimum 6 mm deep alround& filled with approved quality epoxy grout.
Skirting shall be with same tiles laid over 12 mm (average) thick cement mortar 1:3 (1
cement: 3 coarse sand) .

Matt / polished Vitrified wall tiles 9 mm (+/- 1 mm) thick : Wall cladding / dado shall
be of approved uniform colour and size 60 X 30 cm / 60 X 60 cm 9 mm thick Matt / polished
Vitrified wall tiles of approved make including fixing tiles over 12 mm thick bed of cement
morter 1:3 (1 Cement : 3 Course sand ) and jointed with grey cement slurry @ 3.3 Kg per
sqm including pointing in white cement mixed with pigment of matching shade including
keeping the joints 3 mm wide & minimum 6 mm deep alround& filled with approved quality
epoxy grout. The heights of dado shall be as per GFC architectural drawing.

All tiles shall be of 1st quality as per approved sample, brand, manufacture, colour and shade.

Epoxy Grout-Grouting the joints of flooring tiles / stones having joints of 3 & 4 mm width,
using epoxy grout mix of 0.70 kg of organic coated filler of desired shade (0.10 kg of hardener
and 0.20 kg of resin per kg), including filling / grouting and finishing complete as per
direction of Engineer-in-charge.

Lecture Halls Tier : All lecture hall tiers, shall be made based on levels mentioned in
drawings with 230 mm thick cement based fly ash brick wall as toe walls (with class
designation 7.5) in cement mortar 1:6 (1 cement: 6 coarse sand) as per drawings. The tier
thus formed shall be filled with light weight machine mixed Autoclaved aerated cement
(AAC) blocks concrete in volumetric proportion 1:4:8 (1 cement : 4 coarse sand :8 AAC block
aggregate 40 mm nominal size) & 75 mm thick PCC 1:4:8 (1 cement : 4 coarse sand :8 graded
stone aggregate 20 mm nominal size) below the final floor finish as per GFC drawing.

Raised / false access flooring as per item code 11.54 DSR 2018 : Providing and fixing
removable raised / false access flooring with system and its components of approved make
for different plenum height with possible height adjustment up to 50 mm, comprising of
modular load bearing floor panels supported on G.I. rectangular stringer frame work and G.I.
Pedestal etc. all complete, as per the architectural drawings, as specified, as per
manufacturer specification and as directed by Engineer-in-charge for 600 mm finished floor
height (FFH) or height as mentioned in GFC drawing.

Providing at required spacing to form modular framework, pedestals made out of GI tube of
thickness minimum 2 mm and 25 mm outer diameter, fully welded on to the G.I. Base plate
of size 100mm x 100mm x 3mm at the bottom of the pedestal tube, G.I. pedestal head of size
75mmx75mmx3.5 mm welded with GI fully threaded stud 16mm outer diameter with two
GI Check nuts screwed on the stud for level adjustment upto 50mm, locking and stabilizing
the pedestal head in position at the required level. The pedestals shall be fixed to the
subfloor (base) through base plate using epoxy based adhesive of approved make or the
machine screw with rawl plug.

Stringers system in all steel construction hot dipped galvanized of rectangular size
570x20x30x0.80mm thick having holes at both ends for securing the stringers on to the
pedestal head using fully threaded screws ensuring maximum lateral stability in all
directions, the grid formed by the pedestal and stringer assembly shall receive the floor

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 199

panel, this system shall provide adequate solid, rigid support for access floor panel, the
system shall provide a minimum clear uninterrupted clearance between the bottom of the
floor for electrical conduits and wiring etc. all complete as per the architectural drawings, as
specified and as directed by the Engineer-in-charge.

Access Floor panel of 600x600x32 mm medium grade Filled Steel anti static high pressure
Lamination of 800H grade (FS800H). Access Floor panel shall be steel welded construction
with an enclosed bottom pan with uniform pattern of 64 hemispherical cones. The top and
bottom plates of Steel Gauges: top 0.6 mm and bottom 0.7 mm fused spot welded together
(minimum 64 welds in each dome and 20 welds along each flange). The panel should be
Corroresist epoxy coated for lifetime rust protection and cavity formed by the top and
bottom plate is filled with Pyrogrip noncombustible Portland cementitious core mixed with
lightweight foaming compound. The access floor shall be factory finished with Anti-static
High Pressure laminate with Non Warp technology upto 1mm thickness for superior
adhesion and Surface flatness within 0.75mm.The panel is to withstand a Concentrated Load
of 363 kgs applied on area 25mm x 25mm without collapse in the centre of the panel which
is placed on four steel blocks. The panel will withstand and Uniformly Distributed Load
(UDL) minimum 1250 kg/sqm and an impact load of 50kg all complete as per the approved
manufacturers specification and as per the direction of Engineer-in-charge. All specification
must be printed on the side of the panel to ensure the quality of the product.

Heat Resistant Tile :- Providing and fixing Heat Resistant Terrace Tiles (300 mm x 300 mm
x 20 mm) with SRI (solar refractive index) > 78, solar reflection > 0.70 and initial emittance
> 0.75 on waterproof and sloped surface of terrace, laid on 20 mm thick cement sand mortar
in the ratio of 1:4 (1 cement : 4 coarse sand) and grouting the joints with mix of white cement
& marble powder in ratio of 1:1, including rubbing and polishing of the surface upto 3 cuts
complete, including providing skirting upto 150/300 mm height along the parapet walls in
the same manner.

Stone With Epoxt Grout :-Providing & laying 25 mm thick sand blasted leather
finish/polished Rajim/Kota/ Kadappa stone in areas as mentioned in drawing to the
approved pattern as directed using 25 mm (nominal) thick stone slabs with machine cut
edges (straight or raked as called for) of sizes 600x600mm. The stone shall be fixed as per
detail specification below

(1) Cleaning the surface thoroughly with wire brush.(2) Applying bonding coat with neat
cement slurry @ 2.75 kg/sqm on concrete/brick bat coba surface. (3) Fixing stones with
cement paste @ 4.4 Kg/SqM over green finishing top coat 20 mm thick cement mortar 1:4 (1
cement : 4 coarse sand) of brick bat coba, keeping the joints 4 mm wide & 6 mm deep all-
round for epoxy grouting complete including rubbing and polishing as directed by Engineer-
in-Charge. The joint should be filled with approved quality anti-fungal epoxy grout Latapoxy
2000 of M/s Laticrete or approved equivalent, as per manufacturer specifications or as
directed. Skirting shall be with 20 mm thick stones over 12mm (average) thick CM 1:3 (1
cement: 3 coarse sand).

Tactile tile : Providing and laying tactile tile (for vision impaired persons as per standards)
of size 300x300x9.8mm having with water absorption less than 0.5% and conforming to IS:
15622 of approved make in all colours and shades in for outdoor floors such as footpath,
court yard, multi modals location etc., laid on 20mm thick base of cement mortar 1:4 (1
cement : 4 coarse sand) in all shapes & patterns including grouting the joints with white
cement mixed with matching pigments etc. complete as per direction of Engineer-in-Charge

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 200

Wash basin Counter : 18 mm thick gang saw cut mirror polished Granite stone (
premoulded and prepolished ) machine cut of required size of approved shade, colour and
texture laid over 20mm thick base cement mortar 1:4 (1 cement : 4 coarse sand ) with joints
treated with white cement, mixed with matching pigment, epoxy touch ups, including
rubbing, curing moulding as per drawing and polishing to edge to give high gloss finish.

Wash basin fascia & drops : 18 mm thick gang saw cut mirror polished Granite stone (
premoulded and prepolished ) machine cut of required size of approved shade, colour and
texture of width upto 150 mm fixed with epoxy resin based adhesive of approved make
including cleaning .

Wash basin openings : Opening of required size & shape for wash basins platform, and
similar location in marble/stone work including necessary holes for pillar taps etc.
including rubbing and polishing of cut edges shall be provided & nothing extra to be paid for
this account.

Mirrors : Mirror shall be 6 mm thick bevelled edge mirror of superior float glass (of
approved quality) complete over 6 mm thick marine ply fixed to wooden cleats with stainless
steel screws, washers and caps complete as per drawing or as directed by E-I-C.

Over Head Tanks : Internal floor & wall finish of Overhead Water Tanks / domestic / Fire /
Flushing tanks shall be Acrylic Cementitious Modified two component waterproofing as per
manufacturers specification finished with 300x300mm glazed Ceramic tiles over 12 mm
thick bed of cement mortar 1:3 (1 Cement : 3 Course sand ) and jointed with grey cement
slurry @ 3.3 Kg per sqm including pointing in white cement mixed with pigment of matching
shade. For detail refer GFC drawings.

Over Head tank top cover shall be 455 X 610 mm rectangular C.I. Cover with frame ( light
duty ) including lockable arrangement, the total weight of cover and frame to be not less than
38 kg ( weight of cover 23 kg and weight of frame 15 kg. ) & rungs shall be orange colour
safety foot rest of minimum 6 mm thick plastic encapsulated asper IS: 10910 on 12mm dia
steel bar conforming to IS :1786 having minimun cross section as 23 mm x 25 mm and over
all minimum length 263mm and width as 165mm with minimum 112mm space between
protruded legs having 2mm tread on top surface by ribbing or chequering besides necessary
and adequate anchoring projections on tail length on 138mm as per standard drawing or
as per CPWD specification.

Contractor while quoting rates must keep following minimum base rates for following
items in mind. Contractor to provide bills of following items as and when demanded
by CPWD field staff.

Minimum base rate (F.O.R at site) of Granite is Rs. 2200/- per sqm / 20 mm thick Antiskid
Industrial Vitrified tiles Rs. 1575 per sqm / Antiskid full body Vitrified floor tiles 9 to 10 mm
thick of size 60 X 30 cm / 60 X 60 cm is Rs 770/- per sqm / 15 to 16 mm thick Antiskid
Industrial Vitrified tiles Rs. 1150 per sqm/ Matt or Polished Vitrified wall tiles 9 mm thick
Rs. 725/- per sqm / Matt polished or semi polished Vitrified floor tiles 9 to 10 mm thick Rs.
770/- per sqm /glazed Ceramic tile is Rs. 350/- per sqm.

All work in general shall be carried out as per CPWD Specifications- 2009 - Vol.I& Vol. II with
upto date correction slips.

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 201

Whenever flooring is to be done in patterns tiles/ stone, the contractor shall get samples of
each pattern laid and approved by the Engineer-in-Charge before final laying of such flooring
for which nothing extra shall be paid.
Different stones/ tiles used in pattern flooring as per the approved architectural drawings
and nothing extra for laying pattern flooring shall be paid. No additional wastage if any shall
be accounted for any extra payment.
The proper gradient shall be given to flooring for toilets, verandah, kitchen, court yard, etc.
as per the directions of Engineer-in-Charge. For this there may be extra thickness of dry
mortar below the tiles/stone slabs. These gradients should be insured in the shuttering
itselffor which nothing extra shall be paid.
One-piece stone for treads / risers in staircase shall be used and nothing extra shall be paid
on this account.

FALSE CEILING

Materials shall be of the best-approved quality obtainable and they shall comply with the
respective latest Standard Specifications.Samples of all materials shall be got approved before
placing order and the approved sample shall be deposited with the Engineer in Charge,
which will be displayed at site as a control sample.
In case of non-availability of materials in metric sizes, the nearest size in FPS units shall
be provided with the prior approval of the E.I.C.
Materials shall be tested in any approved testing Laboratory and the test certificate in
original shall be submitted to the Engineer-in-Charge.
All work to be done by Manufacturer’s Authorized/Recommended/Trained Installer or
as approved by Engineer-in-Charge.
Note:-Trap door/Inspection door of required size to be provided by contractor in false
ceiling as per service requirement and approved shop drawing or as decided by EIC and
door opening/closing should be smooth and robust for easy maintenance.

GYPSUM BOARD SINGLE LAYER FALSE CEILING

Providing and fixing 12.5 mm thick tapered edge gypsum plain board conforming to IS: 2095
false ceiling at all height including providing and fixing of frame work made of special
sections, power pressed from M.S. sheets and galvanized with zinc coating of 120 gms/sqm
(both side inclusive) as per IS : 277 and consisting of angle cleats of size 25 mm wide x 1.6
mm thick with flanges of 27 mm and 37mm, at 1200 mm centre to centre, one flange fixed to
the ceiling with dash fastener 12.5 mm dia x 50mm long with 6mm dia bolts, other flange of
cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of
required size and other end of angle hanger fixed with intermediate G.I. channels 45x15x0.9
mm running at the spacing of 1200 mm centre to centre, to which the ceiling section 0.5 mm
thick bottom wedge of 80 mm with tapered flanges of 26 mm each having lips of 10.5 mm, at
450 mm centre to centre, shall be fixed in a direction perpendicular to G.I. intermediate
channel with connecting clips made out of 2.64 mm dia x 230 mm long G.I. wire at every
junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20
mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl
plugs at 450 mm centre, with 25mm long dry wall screws @ 230 mm interval, including
fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall
screws of size 3.5 x 25 mm at 230 mm c/c, including jointing and finishing to a flush finish of

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 202

tapered and square edges of the board with recommended jointing compound , jointing
tapes , finishing with jointing compound in 3 layers covering upto 150 mm on both sides of
joint and two coats of primer suitable for board, all as per manufacturer's specification and
also including the cost of making openings for light fittings, grills, diffusers, cutouts made
with frame of perimeter channels suitably fixed (if any additional members required at
cutouts shall be provided free of cost) all complete as per drawings, specification and
direction of the Engineer in Charge including final finishing and painting as per GFC drawing.

GYPSUM BOARD DOUBLE LAYER FALSE CEILING

a. Material : Gypsum board Plain 12.5 mm thick which have gray face paper and brown
reverse side paper suitable for most applications where Normal fire, Structural and Acoustic
levels are specified. Applicable standard of the boards should be IS 2095 (Part 1):2011 (BIS
Certified) and should have thermal conductivity and thermal resistance of 0.16 and 0.078
(w/mºK).The boards should have Taper edge along length of board and Square edge along
width of board. Flexural breaking load of Gypsum board as per IS 2095 (Part 1):2011 is 180
N in Transverse Direction and 500 N in Longitudinal Direction. Ceiling is in 2 layers with
staggered joints.

b. Frame work : - Providing and fixing of frame work made of special/seratted sections,
power pressed from M.S. sheets and galvanized with zinc coating of minimum120 gms/sqm
(both side inclusive) as per IS : 277 and consisting of angle cleats of size 25 mm wide x 1.6
mm thick with flanges of 27 mm and 37mm, at 900 mm centre to centre, one flange fixed to
the ceiling with dash fastener 12.5 mm dia x 50mm long with 6mm dia bolts, other flange of
cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of
required size and other end of angle hanger fixed with intermediate G.I. channels 45x15x0.9
mm running at the spacing of 900 mm centre to centre to which the ceiling section 0.5 mm
thick bottom wedge of 80 mm with tapered flanges of 26 mm each having lips of 10.5 mm, at
450 mm centre to centre, shall be fixed in a direction Perpendicular to G.I. intermediate
channel with connecting clips made out of 2.64 mm dia x 230 mm long G.I. wire at every
junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20
mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl
plugs at 450 mm centre, with 25mm long dry wall screws @ 230 mm interval, including
fixing of double layer of 12.5mm tapered edge Gypsum board Plain (conforming to IS 2095-
Part 1:2011, BIS Certified board) is then screw fixed to ceiling section with 25mm drywall
screws for first layer and 35 mm drywall screws for second layer at 230mm centres on
ceiling section & 150mm at periphery of ceiling including jointing and finishing to a flush
finish of tapered and square edges of the board with recommended jointing compound ,
jointing tapes , with jointing compound in 3 layers covering upto 150 mm on both sides of
joint and two coats of primer suitable for board, all as per manufacturer’s specification and
also including the cost of making openings for light fittings, grills, diffusers, cutouts made
with frame of perimeter channels suitably fixed (if any additional members required at
cutouts shall be provided free of cost) all complete as per drawings, specification and
direction of the Engineer in Charge including painting as per GFC drawing.

ALUMINIUM TILE FALSE CEILING

1. LAY-IN PLAIN TILE ALUMINIUM FALSE CEILING

a. Material : Aluminium metal ceiling consisting of 600 mm X 600 mm / 600 mm x 1200 mm
Aluminium Lay-in plain tiles in 0.7 mm thickness. The tile shall be Powder coated minimum
60microns in the manufacture’s standard colour shades, with Microlook edges and flanges,
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 203

produced on advanced equipment, which includes several levelling stages in the

manufacturing process.The tiles should have Fire Performance of Class 0/Class 1 as per
BS476 Part 6 & 7 standard in module size of 600 mm X 600 mm / 600 mm x 1200 mm

2. LAY-IN PERFORATED TILE ALUMINIUM FALSE CEILING

a. Material : Aluminium Metal Ceilings system Microlook, Micro Perforated (having 1.8 mm
diameter holes & 20 % open area) consisting of 600 mm X 600 mm / 600 mm x 1200 mm Lay in
tiles in 0.7 mm thick Aluminum pre coated to Global white color with Acoustical fleece of
soundtex or equivalent make hot pressed on the back of the perforated tile.The tile shall be
Powder coated minimum 60 to 80microns in the manufacture’s standard colour shades.
The tiles would have NRC of 0.70. The tiles would have Fire Performance of Class 0/Class 1
as per BS476 Part 6 & 7 standard in module size of 600 mm X 600 mm / 600 mm x 1200 mm.

3. LAY-IN PERFORATED TILE ALUMINIUM FALSE CEILING WITH 50 MM THICK

FIBRE GLASS WOOL
a. Material : Aluminium Metal Ceilings system Microlook, Micro Perforated (having 1.8
mm diameter holes & 20 % open area) consisting of 600 mm X 600 mm / 600 mm x 1200 mm Lay
in tiles in 0.7 mm thick Aluminum pre coated to Global white color with Acoustical fleece
of soundtex or equivalent make hot pressed on the back of the perforated tile to achieve
NRC upto 0.7 & 50 mm thick Resin Bonded Fibre glass wool conforming to IS : 8183,
density 24kg / m3 & NRC upto 1.0, wrapped in 40 to 45 GSM Fibre glass tissue laid over
perforated tile. The tile shall be Powder coated minimum 60 to 80microns in the
manufacture’s standard colour shades.The tiles would have Fire Performance of Class 0 /
Class 1 as per BS476 Part 6 & 7 standard in module size of 600 mm X 600 mm / 600 mm x 1200
mm
Frame work & Installation : - All tiles to be installed on a standard 600 mm X 600 mm / 600
mm x 1200 mm module 15mm table exposed metal grid. Grid system to be designed to satisfy
ASTM C635 loading and deflection criteria. The main and cross runners to be provided with
beyonet coupling for quick installation and shall have a height of 38mm.
The tile false ceiling suspended on inter locking metal grid of hot dipped galvanized steel
sections ( galvanized @ 120 grams/ sqm, both side inclusive) consisting of main "T" runner
with suitably spaced joints to get required length and of size 15 x 38 mm made from 0.30
mm thick (minimum) sheet, spaced at 1200 mm center to center and cross "T" of size 15 x
38 mm made of 0.30 mm thick (minimum) sheet, 1200 mm long spaced between main "T" at
600 mm center to center to form a grid of 1200x600 mm and secondary cross "T" of length
600 mm and size 15 x 38 mm made of 0.30 mm thick (minimum) sheet to be interlocked at
middle of the 1200x600 mm panel to form grids of 600x600 mm and wall angle of size
19x19x0.3 mm and laying false ceiling tiles of approved texture in the grid including,
required cutting / making, opening for services like diffusers, grills, light fittings, fixtures,
smoke detectors etc. Main "T" runners to be suspended from ceiling using M6 Anchor
Fasteners with hanger hole, pre Straightened Hanger wire of dia. 2.5 mm of 1.80 m length
having a tensile strength of 344-413 MPa and a minimum pull strength of 110 kgs. Adjustable
hook clips of 0.7mm thick, galvanized spring steel can also be used for installation purpose
as an additional accessory. The adjustable clip also consists of a 4 mm aquiline wire to be
used with the main runner.
The first/last suspension system at the end of each main runner should not be greater than
450mm from the adjacent wall.Bottom exposed width of 15 mm of all T-sections shall be pre-
painted with polyester paint, all complete for all heights as per specifications, drawings and
as directed by Engineer-in-charge

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 204

Finally the tiles shall be laid in place from below into the standard grid. In case of end tiles
lesser than 600mm, use lay-in end cap / edge profile for installation to have a Microlook
effect on perimeters. This system also including the cost of making openings for light fittings,
grills, diffusers, cutouts made with frame of perimeter channel suitably fixed all complete as
per drawing and specification and direction of the Engineer-in-charge.

CLIP-IN PLAIN TILE ALUMINIUM FALSE CEILING

Material : Providing & Fixing true horizontal level suspended ceiling comprising of
Aluminum Clip-in plain tiles with double clip self-leveling feature and special tabs to allow
removal of tile to enable plenum access with plain visual consisting of 600 mm X 600 mm / 600
mm x 1200 mm clip in tiles of 0.7mm thick Aluminum with bevel edge in Global white color.
The tile shall be Powder coated 60-80 microns in the manufacture’s standard colour shades.
The tiles would have Fire Performance of Class 0/Class 1 as per BS476 Part 6 & 7 standard
in module size of 600 mm X 600 mm / 600 mm x 1200 mm

b. Frame work & Installation: Frame work includes providing and fixing 'C' wall angle of
size 20x30x20 mm made of 0.5 mm thick pre painted steel along the perimeter of the room
with help of nylon sleeves and wooden screws at 300 mm center to centre, suspending the
main C carrier of size 10x38x10 mm made of G.I steel 0.7 mm thick from the soffit with help
of soffit cleat 37x27x25x1.6 mm, rawl plugs of size 38x12 mm and C carrier suspension clip
and main carrier bracket at 1000 mm c/c. Inverted triangle shaped Spring Tee having height
of 24 mm and width of 34 mm made of Gl steel 0.45 mm thick is then fixed to the main C
carrier and in direction perpendicular to it at 600 mm centers with help of suspension
brackets. Wherever the main C carrier and spring T have to join, C carrier and spring T
connectors have to be used. All sections to be galvanized @ 120 gms/sqm (both side
inclusive).Cut tiles to be secured to the wall angles using a spring clamp
procedure.Installation to be carried out by company trained Installation team & Installation
should be carried out as per manufacturer specification & recommendation.

8 MM THICK CALCIUM SILICATE BOARD FALSE CEILING

Providing & fixing 8 mm thick Calcium Silicate Board made with Calcareous & Siliceous
materials reinforced with cellulose fiber manufactured through autoclaving process false
ceiling at all height including providing & fixing of framework made of special section, power
pressed from M.S. sheets and galvanised with zinc coating of 120 gms/ sqm (both side
inclusive) as per IS : 277 and consisting of angle cleat of size 25mm wide x 1.6mm thick with
flanges of 27mm and 37mm, at 1200mm c/c, one flange fixed to the ceiling with dash fastener
12.5mm dia x 50mm long with 6mm dia bolts, other flange of cleat fixed to the angle hangers
of 25 x10 x0.50mm of required length with nuts & bolts of required size and other end of
angle hanger fixed with intermediate G.I chanels 45 x15 x 0.90mm running at the spacing of
1200 mm c/c, to which the ceiling section 0.5mm thick bottom wedge of 80mm with tapered
flanges of 26 mm each having lips of 10.5mm, at 450mm c/c, shall be fixed in a direction
perpendicular to G.I intermediate channel with connecting clip made out of 2.64mm dia x
230mm long G.I wire at every junction, including fixing perimeter channels 0.50mm thick
27mm high having flanges of 20mm and 30mm long, the perimeter of ceiling fixed to wall/
partitions with the help of Rawl plugs at 450mm centre, with 25mm long dry wall screws @
230mm interval, including fixing of Calcium Silicate Board to ceiling section and perimeter
channels with the help of dry wall screws of size 3.5 x25mm at 230mm c/c, including jointing
& finishing to a flush finish of tapered and square edges of the board with recommended
jointing compounds, jointing tapes,finishing with jointing compounds in three layers

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 205

covering up to 150mm on both sides of joints and two coats of primer suitable for boards, all
as per manufacture's specification and also including the cost of making opening for light
fittings, grills, diffusers, cut outs made with frame of perimeter channels suitably fixed,( if
any additional members required at cutouts shall be provided free of cost) all complete as
per drawings, specificaton and direction of the Engineer in charge including final finishing
and painting as per GFC drawing.

WATER PROOFING
Different types of waterproofing treatment mentioned below to be executed by contractor
at locations mentioned in GFC Drawing of various buildings.

ACRYLIC CEMENTITIOUS MODIFIED TWO COMPONENT WATERPROOFING :

Providing and applying waterproofing treatment to the sunken slabs, Balconies or other
location as per GFC drawing, including cleaning of surface to remove dust, loose particles,
etc with compressed air or any other suitable technique depending on site conditions,
grinding any sharp edges, etc as per the instructions of Engineer in charge and post cleaning
applying a two component acrylic modified cementitious coating system at a total
consumption of 1.8 to 2 Kgs/Sqm in two coats complete as per manufacturers specification
or as directed by E.I.C..

The waterproofing system should exhibit the following properties: density : 1.5 to 2 kg/ltr,
Elongation at break (ASTM D412): 200 to 250%, Crack resistance at 20 degree centigrade >
2 mm

All corners in sunkens must be sealed a SealTape S, an elastic waterproof sealing tape with
a woven bonding mesh on each surface and an elastic expansion zone in the center. The
waterproofing should be taken to a height of 300 mm in the vertical.

The work shall be carried out all complete as per specification and the direction of the
engineer-in-charge. The product performance shall carry guarantee against any leakage.

BRICK BAT COBA WATERPROOFING TREATMENT

Providing and laying integral cement based brick bat coba waterproofing treatment to
required slope / gradientas per drawing with average thickness of 120mm or can be
increased as per site requirement and minimum thickness at khurra as 65 mm as per CPWD
specification including preparation of surface as required for treatment of roofs, balconies,
terraces etc. consisting of following operations:
a) Applying a slurry coat of neat cement using 2.75 kg/sqm. of cement admixed with water
proofing compound conforming to IS.2645 and approved by Engineer-in-charge over
the RCC slab including adjoining walls upto 300mm height including cleaning the surface
before treatment.
b) Laying brick bats with morter using broken bricks/brick bats 25mm to 115 mm size
with 50% of cement mortar 1:5 (1 cement: 5 coarse sand) admixed with water proofing
compound conforming to IS:2645 and approved by Engineer-in-charge over 20mm thick
layer of cement mortar of mix 1:5 (1 cement: 5 coarse sand) admixed with water
proofing compound conforming to IS:2645 and approved by Engineer-in-charge to

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 206

required slope and treating similarly the adjoining walls upto 300 mm height including
rounding of junctions of walls and slabs.
c) After two days of proper curing applying a second coat of cement slurry using 2.75
kg/sqm of cement admixed with water proofing compound conforming to IS:2645 and
approved by Engineer-in-charge.
d) Finishing the surface with 20mm thick jointless cement mortar of mix 1:4 ( 1cement :4
coarse sand) admixed with water proofing compound conforming to IS:2645 and
approved by Engineer-in-charge including laying glass fibre cloth of approved quality in
top layer of plaster and finally finishing the surface with trowel with neat cement slurry
and making of 300 X 300 mm square 3mm deep.
e) The whole terrace so finished shall be flooded with water for a minimum period of two
weeks for curing and for final test. All above operations to be done in order and as
directed and specified by the Engineer-in-Charge.

BRICK BAT COBA WATER PROOFING TREATMENT WITH ROOF INSULATION

Providing and laying Water proofing treatment & roof insulation including preparation of
surface as required for treatment of roofs, balconies, terraces etc. consisting of following
operations:

1. Cleaning all the surface area to remove loose particles such as mortar, dust etc., with wire
brush & air blower complete in all respect as per the direction of Engineer-in-Charge.

2. Providing & laying thermal insulation with 50mm thick extruded polystyrene having
closed cell structure, ideal for insulation of roofs. XPS should have density of 32-35
Kg/cum (EN 1602), compressive strength of 300 KPa (as per EN 826) ; Resistance to Fire
of "E" Class; Water Absorption of <0.7% (as per EN 12087) ; Thermal resistance of 1.5
sqm.KW; Thermal Conductivity of 0.029- 0.034 W/m-k (as per EN 12667) and should be
laid directly over the mother slab, spot stuck using cold bitumen as per manufacturer
specification

3. Over extruded polystyrene providing and fixing of anti punching and vapor diffusion layer
made of a geotextile felt NT fibers of polypropylene is 100% pure, thermotreated,
needlepunched, resistant microorganisms, weight > 200 gr /sqm.

4. For Terrace : Over geotextile felt providing and fixing 1.5mm mechanically fastened
polyvinyl chloride (PVC-P) roof membrane.PVC membrane shall be reinforced with glass
fibre of 50g/sqm and should have minimum roll size of 1.6m x 20m rolls) to minimize
joints & shall be asbestos free. It should be mechanically fixed around the perimeter with
a pre-drilled bar on the horizontal or vertical surface at the base of the upstand as per
manufacturer specification. Roof Membrane should be overlapped with minimum 100
mm lap and seamed using hot air heat welding equipment.

For Parapet / wall : Over geotextile felt providing and fixing 1.5mm (60 mil) mechanically
fastened polyvinyl chloride (PVC-P) by using metal perimetre profile on vertical wall
/parapet. The PVC membrane is welded with Leister hot air gun over the entire length of
the PVC metal Sheet. The overlaps for vertical section to be minimum 100 mm, to be
sealed using hot air gun.
PVC membrane shall have following minimum properties , (i) Thickness : 1.5mm as per
EN 1849-2, (ii) Tensile Strength > 9 N/sqmm as per EN 12311-2, met B (iii) Elongation of

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> 200% as per en 12311-2, met B (iv) Tear Resistance > 135 N as per EN 12310-2, and
Cold bending of minimum < -25 deg as per EN 495-5.

5. Over PVC membrane providing separation layer with laying polyester geo textile of
minimum 150 gsm .. Geotextile separation layer should have weight of minimum 150 gsm
; static puncture resistance of > 250N; Dynamic punsture resistance of 40MM; and should
be laid over the entire area before laying Brickbat coba / screed to slope as per DSR 2018
item no. 22.7.

6. The entire treatment will be taken upto 30 cm on parapet wall or upto parapet projection
as per manufacturer’s specification.

7. The above mentioned waterproofing treatment & insulation finally covered with brick bat
coba waterproofing treatment to required slope / gradient as per drawing with average
thickness of 120mm or more as per site requirement and minimum thickness at khurra
as 65 mm as per CPWD specification including final finishing layer i.e layer of plaster with
trowel with neat cement slurry and making of 300 X 300 mm squares 3 mm deep groove
or heat resistant tiles / stone flooring,whichever is given in GFC drawing.

Note:- A layer of PCC or Cement concrete screed is not mentioned in above treatment but to
be provided if mentioned in GFC drawing.

This specification covers waterproofing & insulation of concrete roof using XPS insulation &
PVC waterproofing Membrane. The sheets are welded together by applying hot air or using
hot wedge, with manual or automatic welder.
The work shall be executed with the best modern practices, special instruction of the
material manufacturer and to the complete satisfaction of the Engineer.

Library & Data Center : for usable roofs, balconies etc as per GFC drawing

A. Water proofing treatment without insulation

1. Cleaning all the surface area to remove loose particles such as mortar, dust etc., with wire
brush & air blower complete in all respect as per the direction of Engineer-in-Charge.

2. Separation Layer : Providing and laying 500 GSM Polypropylene Geotextile on the Surface
with 100mm overlap. Geotextile shall be non-woven needle punctured on both sides made
of 100% virgin and high tenacity polypropylene short fibres. Having high tenacity, High
resistance to alkalinity and inert towards the various chemical elements present in the soil.
and High puncture resistance. Geotextile shall have following properties: Static Puncture
Resistance : 7900N; Tensile Strength (DM/DT) : 35/46 KN/m; Elongation (DM/DT) :
75/80%.

3. Waterproofing Membrane: Synthetic membrane manufactured in Thermo Plastic Olefin

(TPO), double colour sand-grey (signal layer)/black, obtained by co-extrusion, reinforced
by a polyester mesh. The upper sand grey layer is featured by a very high resistance to
weather and UV rays, while the underlying black layer is punching resistant.
TPO membrane shall be asbestos free, and should exceed /meet specifications of EN
13956:2012. TPO Roof Membrane shall accepts roof movement and thermal shock, loosely

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laid on the geotextile. TPO Roof Membrane should be lapped and seamed using hot air heat
welding equipment with an overlap of 80mm. TPO membrane shall have following minimum
properties , (i) Thickness : 1.5 mm membrane system as per EN 1849-2 with -5% & +10%
tolerances as per EN 13956. (ii) Tensile strength ≥ 1100 N/5cm as per EN 12311-2; (iii) Tear
Resistance ≥ 300 N as per EN 12310-2; (iv) Resistance to impact ≥ 800mm as per EN 12691;
(v) Cold bending of minimum ≤ -40 deg as per EN 495-5; (v) Fire classification – Class E as
per EN 13501-1 & EN ISO 11925-2, (vi) Static Puncture Resistance ≥ 20 kg as per EN 12730.

4.Separation Layer: Over waterproofing membrane providing and laying 500 GSM
Polypropylene Geotextile on the Surface with 100mm overlap. Geotextile is a high tenacity
non-woven needle punctured on both sides made of 100% virgin and high tenacity
polypropylene short fibres. Having high tenacity, High resistance to alkalinity and inert
towards the various chemical elements present in the soil. and High puncture resistance.
Geotextile shall have following properties: Static Puncture Resistance: 7900N; Tensile
Strength (DM/DT) : 35/46 KN/m; Elongation (DM/DT) : 75/80%

The entire treatment will be taken upto 30 cm on parapet wall or upto parapet projection as
per manufacturer specification.

B. Water proofing treatment with insulation

1. Cleaning all the surface area to remove loose particles such as mortar, dust etc., with wire
brush & air blower complete in all respect as per the direction of Engineer-in-Charge.

2. Providing & laying thermal insulation with 50mm thick extruded polystyrene having
closed cell structure, ideal for insulation of roofs. XPS should have density of 32-35 Kg/cum
(EN 1602), compressive strength of 300 KPa (as per EN 826) ; Resistance to Fire of "E" Class;
Water Absorption of <0.7% (as per EN 12087) ; Thermal resistance of 1.5 sqm.KW; Thermal
Conductivity of 0.029- 0.034 W/m-k (as per EN 12667) and should be laid directly over the
mother slab, spot stuck using cold bitumen as per manufacturer specification

3. Separation Layer : Over extruded polystyrene providing and laying 500 GSM
Polypropylene Geotextile on the Surface with 100mm overlap. Geotextile shall be non-woven
needle punctured on both sides made of 100% virgin and high tenacity polypropylene short
fibres. Having high tenacity, High resistance to alkalinity and inert towards the various
chemical elements present in the soil. and High puncture resistance. Geotextile shall have
following properties: Static Puncture Resistance : 7900N; Tensile Strength (DM/DT) : 35/46
KN/m; Elongation (DM/DT) : 75/80%.

4. Waterproofing Membrane: Over geotextile felt providing and fixing Synthetic roof
membrane as per specification. Synthetic membrane manufactured in Thermo Plastic Olefin
(TPO), double colour sand-grey (signal layer)/black, obtained by co-extrusion, reinforced
by a polyester mesh. The upper sand grey layer is featured by a very high resistance to
weather and UV rays, while the underlying black layer is punching resistant.
TPO membrane shall be asbestos free, and should exceed /meet specifications of EN
13956:2012. TPO Roof Membrane shall accepts roof movement and thermal shock, loosely
laid on the geotextile. TPO Roof Membrane should be lapped and seamed using hot air heat
welding equipment with an overlap of 80mm. TPO membrane shall be asbestos free, and
should have CE marking and BBA approved with life expectancy in excess of 30 years. TPO
membrane shall have following minimum properties , (i) Thickness : 1.5 mm membrane

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system as per EN 1849-2 with -5% & +10% tolerances as per EN 13956. (ii) Tensile strength
≥ 1100 N/5cm as per EN 12311-2; (iii) Tear Resistance ≥ 300 N as per EN 12310-2; (iv)
Resistance to impact ≥ 800mm as per EN 12691; (v) Cold bending of minimum ≤ -40 deg as
per EN 495-5; (v) Fire classification – Class E as per EN 13501-1 & EN ISO 11925-2, (vi) Static
Puncture Resistance ≥ 20 kg as per EN 12730.

5.Separation Layer: Over waterproofing membrane providing and laying 500 GSM
Polypropylene Geotextile on the Surface with 100mm overlap. Geotextile is a high tenacity
non-woven needle punctured on both sides made of 100% virgin and high tenacity
polypropylene short fibres. Having high tenacity, High resistance to alkalinity and inert
towards the various chemical elements present in the soil. and High puncture resistance.
Geotextile shall have following properties: Static Puncture Resistance : 7900N; Tensile
Strength (DM/DT) : 35/46 KN/m; Elongation (DM/DT) : 75/80%

The entire treatment will be taken upto 30 cm on parapet wall or upto parapet projection (
except insulation) as per manufacturer specification.

WATER PROOFING TREATMENT FOR ACCESS CORRIDOR

Providing and applying roof waterproofing with single component pitch modified
polyurethane at 1.3mm thickness cures by reaction with atmospheric moisture to give a
tough elastomeric waterproof membrane.

Standard compliance : Single component pitch modified polyurethane at 1.3mm thickness

meets the requirements of ASTM C836-84

Technical properties :

1 Elongation (ASTM D412) : >600%

2 Specific gravity : 1.5 to 1.55 g/cc
3 Tensile strength : (ASTM D412) 1.5 N/mm2

4 Modulus @ 100% elongation (ASTM D412) 0.62 N/mm2

5 Tear resistance (ASTM D624) 15 N
6 Water vapour transmission for 1.3mm film (ASTM 9.7 g/m2/24 hrs
E96)
7 Permeability (ASTM E96) 0.063 ng/m/sec/Pa*

Chemical properties : Unaffected by a range of mild acids, alkalis and water borne salts and
is resistant to biodeterioration.

Instructions for use

Preparation : All surfaces to be waterproofed should be sound, clean and dry.

Concrete surfaces should have a light steel-trowel followed by a fine hair-broom or

equivalent finish which is dry and free of dust, oil and other contaminants. All high spots
should be removed.

All metal surfaces should be made clean of paint, oils, rust and other contaminants.

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Priming : Priming is not normally required on good quality concrete substrates. However,
absorbent surfaces such as porous concrete, sand/cement and cement boards will require
sealing ( as per manufacturers specification ) to prevent absorption of polyurethane
waterproofing.

Cracks : All shrinkage and non-moving structural cracks should be pretreated with not less
than a 1.3mm coating of polyurethane extending 75mm either side of the crack. Allow to cure
overnight before general application.

Application : Single component pitch modified polyurethane should be applied by brush,

trowel, squeegee or airless spray (two coat application for standard grade on vertical
surfaces) at a minimum wet film thickness of 1.3mm (1.3 litre/m2).

If a water test is to be run, the membrane should be fully cured.

Flood test : Prior to placement of protection, flood to a minimum depth of 50mm of water
for 24 hours. Drains shall be plugged and barriers placed to contain the water.

Curing and protection : Polyurethene membrane waterproofing must be cured for a

minimum of 24 hours @ 25°C before placing protection. Where damage to the membrane is
possible (by traffic, backfilling, etc) it should be protected by a cementitious screed or
protection boards.

For vertical surface : The entire treatment will be taken upto 30 cm on parapet wall or upto
parapet projection as per manufacturer’s specification.

WATER PROOFING TREATMENT FOR “UNDERGROUND TANK & PUMP ROOM

BUILDING”

Water proofing to be done at locations as shown in GFC Drawing.

For Horizontal Surface : Integral cement based treatment for water proofing on horizontal
surface at all depth below ground level for under ground structures as directed by Engineer-
in-Charge and consisting of :
(i) Ist layer of 22 mm to 25 mm thick approved and specified rough stone slab over a 25 mm
thick base of cement mortar 1:3 (1 cement : 3 coarse sand) mixed with water proofing
compound conforming to IS:2645 in the recommended proportion over the leveling coarse
(leveling coarse to be paid separately). Joints sealed and grouted with cement slurry mixed
with water proofing compound.
(ii) 2nd layer of 25 mm thick cement mortar 1:3 (1 cement: 3 coarse sand) mixed with water
proofing compound in recommended proportions.
(iii) Finishing top with stone aggregate of 10 mm to 12 mm nominal size spreading @ 8
cudm/sqm thoroughly embedded in the 2nd layer.

For Vertical surface : Integral cement based treatment for water proofing on the vertical
surface by fixing approved and specified rough Kota stone slab 22 mm to 25 mm thick with
cement slurry mixed with water proofing compound conforming to IS:2645 in recommended
proportions with a gap of 20 mm (minimum) between stone slabs and the receiving surfaces
and filling the gaps with neat cement slurry mixed with water proofing compound and
finishing the exterior of stone slab with cement mortar 1:3 (1 cement : 3 coarse sand) 20 mm

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thick with neat cement punning mixed with water proofing compound in recommended
proportion complete at all levels and as directed by Engineer-in-charge.

WATER PROOFING TREATMENT FOR WATER TREATMENT PLANT BUILDING”

Water proofing to be done at locations as shown in GFC Drawing.

For Horizontal Surface : Horizontal water proofing shall be 1.2mm thick self-adhesive
HDPE membrane conforming to IS 16471 Type I standard for below ground structures
having the following technical properties-

Puncture resistance 1000 N((± 5 to 10%)as per ASTM E 154

Tensile strength of 25 Mpa as per ASTM D412
Elongation of 500% as per ASTM D 412
Peel adhesion to concrete 880N/m as per ASTM D 903
45 Days UV Exposure test-Pass.

The system should be fully bonded to the RCC and consists of highly resilient HDPE layer, a
pressure sensitive adhesive layer which is covered by a weather proof protective layer. The
membrane shall have minimum of 100 mm laps which shall be sealed with double sided
adhesive tape. The size of the membrane should not be less than 3 Mtr. x 20 Mtr. to minimize
the joints.

All vertical surfaces will be fixed using prefixed gaskets etc. complete as per manufactures
specification with 10 years guarantee for waterproofing performance (against leakage,
seepage etc) to be given by the principal manufacturer / main supplier for both supply and
application.

For Vertical Surface : Horizontal water proofing shall be minimum 1.5 mm thick SBS
modified self-adhesive waterproofing membrane topped with impervious, non-perforated
HDPE valeron film, for use in retaining walls, confirming to the requirements of ASTM D5147
for thickness with a puncture resistance of >200 N as per ASTM E154. The vital physical and
chemical parameters of the membrane shall be as under:

Tensile strength in (L/T) as min 4 N /mm2 (as per ASTM D882),

Tear resistance as min 150 N/mm (as per ASTM D 4073),
Peel Strength to concrete as min 2.2 N/mm as per ASTM C 794
Elongation (L/T)% - L -250-300,T- 250-350 (as per ASTM D 882),
Softening point of membrane not less than 105°C (as per IS 1205/1978),
Cold flexibility shall be upto -10°C when tested in accordance with ASTM D 5147
Crack bridging ability - min 1.5mm as per ASTM C 836

The application include cleaning the surface, priming the surface with cold applied
bituminous primer, laying the membrane, rolling, properly sealing the joints & maintaining
75 mm overlap between the membrane selvedge & min 100 mm overlap on the end joints of
the membrane over the slab etc.. complete. HDPE Dimple Protection board 8MM shall be
spot bonded on retaining wall before backfilling as per manufacturers specification.

Grading roof for water proofing treatment should be given wherever mention in GFC
Drawing

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Cement concrete screed 1:2:4 (1 cement : 2 coarse sand : 4graded stone aggregate 20 mm
nominal size) to required slope / gradient & thickness as per GFC drawing mixed with water
proofing compound conforming to IS:2645 as per manufacturers specification finishing the
surface rough to take required flooring over it.

Planters : All Planters floor & wall finish shall be root Resistant Single orTwo Component
Brush Applied 90% to 100% Polyurethane waterproofing as per manufacturers
specification followed by 15 mm thick water proofing plaster cement morter 1:3 (1 Cement
: 3 Coarse sand ) admixed with water proofing compound conforming to IS:2645 as per
manufacturers specification & drain board. For detail refer GFC drawings.

Providing and applying waterproofing treatment to the planters including cleaning of

surface to remove dust, loose particles, etc with compressed air or any other suitable
technique depending on site conditions, grinding any sharp edges, etc as per the instructions
of Engineer in charge and post cleaning applying primer over the prepared surface a two
part epoxy primer applied at a total consumption rate of 0.25 Kgs/ Sqm broadcasted with
quartz sand at a consumption of 0.8-1.0 kgs/Sqm for keying effect. Providing and applying
90% to 100% Solids, Root Resistant, single or two component solvent free cold applied,
polyurethane coating waterproofing system at a total consumption rate of 1.2 to 1.5
Kgs/Sqm for 1.2 mm thickness applied in two coats. The waterproofing system should have
following system properties. Tensile strength > 2 N/mm2 Elongation at break ~ 400%;
Abrasion Resistance < 30mg (ASTM D 4060) Shore A Hardness 60 to 75 ; Application By
Roller, Squeeze or Brush.

Lift Pits, Toilet sunken floor , skylight top slab & Gutters : Lift Pits, Toilet sunken floor
& Gutters floor & wall finish shall be acrylic cementitious modified two component
waterproofing as per manufacturers specification followed by 15 mm thick water proofing
plaster cement morter 1:3 (1 Cement : 3 Coarse sand ) admixed with water proofing
compound conforming to IS:2645 as per manufacturers specification & drain board. For
detail refer GFC drawings.

Cantilever Terraces except Library & Data Center / tertiary pump room terrace :
Terrace floor & parapet wall finish shall be acrylic cementitious modified two component
waterproofing as per manufacturers specification followed by Brick bat coba waterproofing
treatment to required slope/gradient as per drawing& CPWD specification. For detail refer
GFC drawings.

Balcony except Library & Data Center : Balcony floor & side treated with acrylic
cementitious modified two component waterproofing as per manufacturers specification
followed by brick bat coba waterproofing treatment to required slope/gradient as per
drawing with average thickness of 120mm and minimum thickness at khurra as 65 mm as
per CPWD specification. Finally all balconies finished with 25 mm thick sand blasted leather
finish Rajim or Kadappa stone over 20mm (average) thick base mortar of 1:4. Skirting shall
be with 20 mm thick stones over 12mm (average) thick CM 1:3 (1 cement: 3 coarse sand)
keeping the joints 4 mm wide &6 mm deep alround & filled with approved quality epoxy
grout as per manufacturers specification. For detail refer GFC drawings.

Mumty Slab, Machine room slab & overhead tank, underground tank & Water
treatment plant tanks top slab: Mumty Slab, Machine room slab & overhead tank,
underground tank & Water treatment plant tanks top slab shall be finished with Brick bat
coba waterproofing treatment or as shown inGFC drawing

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 213

Parapet Plaster ; All parapets inside surface above the waterproofing treatment shall be
treated with plaster / paint as per architectural GFC drawing.

Drainboard to be provided wherever mention in GFC Drawing

Providing & laying rolled matrix soil filter cum drainage system of minimum 7-8mm
thickness having a compressive strength of > 240 KN/sqm of 8mm height with geotextile on
top, as per manufacturers specification, complete as directed.

KHURRA:Making khurras 45cm x 45cm with average minimum thickness of 5cm cement
concrete 1:2:4 (1 cement: 2 coarse sand: 4 graded stone aggregate of 20mm nominal size)
finished with 12mm cement plaster 1:3 (1 cement: 3coarse sand) and a coat of neat cement
rounding the edges and making and finishing the outlet complete as per GFC drawing or as
directed by E-I-C.

INTERNAL FINISHING
All paint finishing 1st quality material should have VOC (Volatile Organic Compound) content
less than 50 grams / litre of approved brand, manufacture, colour and shade.Unless
otherwise mentioned the consumption of all Paints/Primers & Chemicals shall be as per
CPWD DSR/DAR 2018/CPWD Specifications.

All painting material shall brought to the site of work in the original sealed containers. The
material brought to the site of work shall be sufficient for at least 30 days of work. The
material shall be kept under the joint custody of contractor and representative of the
Engineer-in-Charge.

All internal ceilings shall be plastered with 6 mm cement plaster of mix 1:3 (1 cement : 3
fine sand) except ceiling above false ceiling & exposed RCC finish ceiling as shown in GFC
drawings. No plastering shall be done at Ceiling covered with false ceiling.

All junctions of concrete and masonry work and other locations shall be provided with
approved galvanized chicken wire mesh (24 gauge 12mm size) fixing in position with
galvanized wire nails as per specifications. Providing grooves of necessary size at the
junctions as per architectural drawing.

Painting & finishing : All internal walls & all internal Ceiling areas ( other than false ceilings
) as per schedule of finishes shown in architectural GFC drawings, with premium acrylic
emulsion paint of interior grade two or more coats on new work including priming coat to
achieve even colour and shade or Acrylic Distemper two or more coats on new work
including priming coat to achieve even colour and shade including applying additional coats
wherever required to achieve even shade and colour. The painting work commencing after
base preparation by white cement based putty (1mm) of approved brand and manufacture
over plaster for even and smooth surface.

All staircase walls as per schedule of finishes shown in architectural GFC drawings, shall be
finished with three coats (first two coats are with brush and final coat is with roller) of Satin
or Matt enamel paint of approved make, desired shade, brand and manufacture, at all heights

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 214

& levels, to give an even shade, including thoroughly brushing the surface free from mortar
droppings and other foreign matter and sand papering smooth. The paint shall be applied
after applying a coat of primer of approved brand and preparation of base surface using
plaster of paris putty / white cement putty / etc. as applicable or as per manufacturer’s
specification or as directed by E-I-C..

All service shaft shall be finished with 15 mm thick water proofing plaster in cement morter
1:3 (1 Cement : 3 Course sand ) admixed with water proofing compound conforming to
IS:2645 as per manufacturers specification& cement paint over water thinnable cement
primer as per specifications . All lift well shall be finished with 12 mm thick cement plaster
(1:6 ) & cement paint over water thinnable cement primer as per specifications .

The painting work commencing after base preparation by white cement based putty (1mm)
of approved brand and manufacture over plaster for even and smooth surface.

Wood works (frame, Beading, lipping, etc.) shall be finished with French spirit polish as per
specifications and direction of E-I-C wherever required.

MS and MS structural works at all levels shall be finished with acrylic polyurethane paint
over two coats of Surface Tolerant Epoxy primer after surface preparation as per given
specification.

EXTERNAL FINISHING

There are 4 types of External finishing coming in any building namely Stone wall cladding,
Exposed Aggregate plaster, External paint and Exposed RCC Surface.

1. EXPOSED RCC SURFACE

All Exposed RCC surface shall be treated with transparent silicone based water repellent
coating conforming to BS: 6477-1984 in 2 coats with a consumption as per the
manufacturers specification or direction of E-I-C.

2. EXTERIOR PAINT
External surfaces shall be finished with exterior grade acrylic paint if given in drawing at
locations specified in the Elevation drawings.

3. EXPOSED AGGREGATE PLASTER

30mm thick exposed aggregate plaster shall be finish in two coats at all levels / height
and on all masonry and concrete elements including scaffolding, curing etc. complete as
per specifications or as per architectural drawings. All Exposed aggregate plaster shall
be treated with transparent silicone based water repellent coating.

A Sample / Mockup shall be prepared for approval prior to start the work.

Scaffolding : For all exposed plaster work or tile work double scaffolding independent of the
work having two sets of vertical supports shall be provided. The supports shall be sound and
strong, tied together with horizontal pieces over which scaffolding planks shall be fixed.

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 215

Preparation of surface : The joints shall be raked out properly. Dust and loose mortar shall
be brushed out. Efflorescence if any shall be removed by brushing and scrapping. The surface
shall then be thoroughly washed with water, cleaned and kept wet before plastering is
commenced. In case of concrete surface if a chemical retarder has been applied to the form
work, the surface shall be roughened by wire brushing and all the resulting dust and loose
particles cleaned off and care shall be taken that none of the retarders is left on the surface.
Projecting burrs of mortar formed due to the gaps at joints in shuttering shall be removed.
The surface shall be scrubbed clean with wire brushes. In addition concrete surfaces to be
plastered shall be pock marked with a pointed tool, at spacings of not more than 5 cm c/c,
the pock being made not less than 3 mm deep. This is to ensure a proper key for the plaster.
The mortar shall be washed off and surface, cleaned off all oil, grease etc. and well wetted
before the plaster is applied.

Materials
Stone Grit : Stone grit shall be free of dust and deleterious material. The grit shall be a
combination of broken Dholpur, white marble, bilha & Katni graded stones of 10 mm to 12
mm in proportions as per approved sample Stone grit shall be thoroughly washed with water
and sieved before use.

Mortar : Cement mortar for under coat and cement mortar to be mixed with stone grit for
top coat shall be as specified.

Bonding Coat : Appropriate bonding coat of approved make shall be done concrete surfaces
as per manufacturers specification..

Application of Plaster
12 to 15 mm thick Under Coat : Under coat of cement mortar 1:4 (1 cement : 4 coarse sand)
with approved integral waterproofing compound in the proportions recommended by the
manufacturer, shall be applied except that the finishing, after the mortar has been brought
to level with the wooden straight edge, shall be done with wooden float only. The surface
shall be further roughened by furrowing with a scratching tool. Furrowing shall be done
diagonally both ways and shall be about 2 mm deep to provide a key for the top coat. The
scratched lines shall not be more than 10 cm apart. The surface shall be kept wet till top coat
is applied.

15 to 18 mm thick Top Coat : Top layer 15-18 mm thick comprising cement ( 50% White &
50% grey ) and stone grit in mix 1:1.5 (1 cement including 15 percent Marble dust: 1.5 stone
grit 10 to 12 mm nominal size) including addition of 15% marble dust to the cement. The top
coat is cost in panels by means of wooden beading. The top coat shall be applied a day or
two after the under coat has taken the initial set. The surface of the under coat shall be
cleaned and a coat of cement slurry at 2 kg of cement per sqm shall be applied before the
application of top coat. The top coat shall be applied in uniform thickness on the under coat
after the application of slurry and sufficiently pressed with wooden float for proper bonding
with the under coat. Vacant space, if any shall be filled with the specified mix.

Finish : The top coat of plaster shall be finished to a true and plumb surface. The surface shall
be tested frequently as the work proceeds with a true straight edge not less than 2.5 m long
and with plumb bobs. All horizontal lines and surfaces shall be tested with a level and all
jambs and corners with a plumb bob as the work proceeds. All the corners angles and
junctions shall be truly vertical or horizontal as the case may be. Rounding or chamfering of
corners junctions etc. where required shall be true to template.

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 216

Finished surface of the top coat after the mix has taken the initial set, shall be scrubbed and
washed with suitable brushes and plain water. Scrubbing and washing shall continue till the
stone chippings are sufficiently exposed. Stone chippings which may come out while
scrubbing shall be replaced using the specified mortar mix.

Grooves : The aggregate plaster finish shall be laid in panels, grooves of size upto 12mm to
15mm shall be provided with hard wood beading with application of shuttering oil between
panels and corners as per Architectural drawing including removal of beading and repairs
to the edges of panel. Tapered wooden battens to match the size and shape of the grooves
shall be fixed on the under coat with nails before the application of the top coat and these
shall be removed carefully so that the edges of the panels of top coat are not damaged.
Damage, if any, shall be made good by the contractor.

Cleaning : The entire surface of the aggregate shall be washed with water and with a solution
of dilute oxalic acid or hydrochloric acid to remove stains and excess mortar as per the
directions of the Engineer-in-charge.

Groove Pointing : All grooves shall be pointed with cement mortar 1:1 (1 cement : 1 coarse
sand) mixed with water-proofing compound as per manufacturer’s specification to a depth
of at least 6mm.

Curing : Curing shall be started 24 hours after finishing the plaster. The plaster shall be kept
wet for a period of seven days.

Drip Course : The contractor shall forming drip course in exposed aggregate plaster as called
for in the architectural drawings including shuttering & finishing .

Chicken Wire mesh : Providing and fixing Chicken wire mesh 200 mm wide at junction of
R.C.C., brickwork, edges, corners, chiseled and repaired brickwork prior to plaster over
concealed conduit, etc. shall be as directed by the Engineer-In-Charge or his representative.
It shall be considered as part of the work.

4. STONE WALL CLADDING

Stone shall be of the type as specified in the item / Drawings. It shall be hard, sound durable
and tough free from cracks, decay and weathering and defects like cavities cracks, flaws,
holes, veins patches of soft or loose materials etc. Thickness of stone shall be minimum 30
mm or as specified in drawing. Samples of each item of stone work either individually or in
combination shall be prepared for approval of Engineer-in-Charge before commencement of
work.
Stone shall be machine cut to the required size and shape on all beds and joints so as to be
free from any waviness and to give truly vertical horizontal surface as required. The exposed
face and sides of stones forming joints shall be such that the straight edge laid along the face
of the stone is in contact with every point on it. All the visible angle and edges shall be square
and free from chipping. The dressed stone shall be 30 mm thick as specified with permissible
tolerance of + 2 mm.

Before starting the work, the contractor shall get the samples of stone approved by Engineer-
Incharge. Approved sample shall be kept in custody of Engineer-in-Charge and stones
supplied and used on the work shall conform to sample with regard to soundness, colour,

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 217

veining and general texture. The stone shall be cut by gang saw into slabs of required
thickness along the places parallel to the natural bed. When necessary double scaffolding for
fixing the stone at greater heights, jib crane or other mechanical appliances shall be used to
hoist the heavy pieces of stone and placed them into correct positions. Care shall have to be
taken that corners of the stone are not damaged. Stone shall be covered with gunny bags
before tying chain or rope is passed over and it shall be handled carefully. No pieces which
has been damaged shall be used that work

Stacking and Storing

Stone slabs are thin and brittle and should never be stacked flat across timber supports. They
should therefore, be stacked on edge on timber or like runners. Packing pieces inserted
between the slabs may be rope or timber. Slabs shall be well covered with plastic sheeting
to protect them from any possible staining.

Scaffolding
Double scaffolding having two sets of vertical supports shall be provided. The supports shall
be sound and strong, tied together with horizontal pieces over which scaffolding planks shall
be fixed.

Fixing
The size & shape of the cramps shall be as per drawing and as per directions of Engineer-in-
charge. The samples of steel cramps should be approved in advance before starting the stone
cladding work. The cramp shall be attached to top and bottom of the stone. The cramps shall
have inbuilt adjustment for vertical and horizontal alignment. The cramps used to hold
support and transfer the load of stone unit to the supporting structured steel shall be
designed by the manufacturer and approval of the same shall be obtained from the Engineer-
in-Charge. The minimum number of clamps required shall be as per requirement of design
to carry the load of individual stone slabs. The cramps shall be spaced with provision for
insertion of pins / bolt attached with the stainless steel cramps along the sides of the stone
as per GFC drawing. Adequate cutting in stone shall be made with precision instruments to
hold the cramps pins at the joints. Stone shall be secured with clamps with high quality
workmanship. The walls shall be carried up truly plumb. All the courses shall be laid truly
horizontal and all the vertical joints truly vertical. The sequence of execution for cladding
work shall be approved by the Engineer-in-Charge/ Architect.

The cramps shall be of stainless steel grade 316 of Hilti or approved equivalent make. The
size & shape of the cramps shall be as per drawing and as per directions of Engineer-in-
charge / Architect. The samples of stainless steel grade 316 cramps should be approved in
advance before starting the stone cladding work. The cramp shall be attached to top and
bottom of the stone. The cramps shall have inbuilt adjustment for vertical and horizontal
alignment. The cramps used to support and transfer the load of stone to the supporting
structure and approval of the same shall be obtained from the Engineer-in-Charge.

The stone shall break joints on the face of the wall unless otherwise shown in the drawings.
The stone shall be in regular courses as per drawing and all stones shall be of the size
mentioned in the drawing also with grooves where ever mentioned.

Jointing
The thickness of joints shall be as small as possible, not exceeding as specified in drawing.
The fine joint shall be uniform throughout. Joints horizontal and vertical shall be filled with
weather sealant of make &colour as approved by Engineer-in-charge with the help of

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 218

pouring gun for filling the sealant. Before filling the joint with sealant, masking tape are
required to be fixed on stones surface on both edges of joints of the stones, so that sealant
may not spoil the surface of the stone. When all the joints are filled and sealant has dried, the
masking tape may be removed.

Protection
Work shall be protected from rain by suitable covering. The work shall also be suitably
protected from damage and rain during construction. All Exposed surface of stone shall be
treated with transparent silicone based water repellent coating.

Materials :
Gang-saw cut Bilha stone : 1st Quality locally best available as approved by EIC
Rough Bilha stone : 1st Quality locally best available as approved by EIC
Polished Mandana stone : 1st Quality as approved by EIC

Stainless Steel Clamps : All clamps / cramps shall be of stainless steel grade 316. The
clamp weight shall be minimum 250gms. The clamp body shall be of minimum 5mm
thickness and shall be able to carry a dead load of 79.5 kgs at minimum offset.The clamp shall
be offset lengths from 50-65mm. Test certificate shall be submitted by the manufacturer, if
required. Clamps shall be fastened by M10X90 Stainless Steel grade (316) mechanical torque
controlled Stud anchor (on concrete). Anchor should be pre-assembled with a stud,
expansion sleeve, a nut and a washer. Top end of stud should contain threads and bottom
end should be cold formed conical head . / M10X100 Stainless Steel grade (316) (on
bricks/aerated blocks) . Anchor should possess ETA approval and comprises of polyamide
PA 6 grade sleeve and stainless steel A4 (316) grade double threaded screw with hexagonal
head. Fixing methodology should be followed as per manufaturer guidelines.The contractor
have to arrange onsite pull out test of clamps/cramps from the manufacturer.

Important note:-It will be responsibility of Contractor alone to ensure that each and every
Cladding stone and clamp is well installed as per CPWD Specs or relevant code/practice and
if any mishap/unfortunate incident happens during execution of work or in future after
completion of work/agreement due to falling of stone etc, then Contractor will be solely
responsible.

Silicone based water repellent coating on External Finishes

Silicone based water repellent coating on exposed RCC surface, exposed stone surface of wall
cladding and exposed aggregate plaster.

Providing and applying silicone based water repellent coating confirming to BS: 6477-1984
in 2 coats with a consumption as per the manufacturer specification or as approved by E.I.C.

The silicone-based water repellent coating should have the below mentioned technical
properties-

Property Typical Value

Appearance Clear free flowing liquid
Colour Water white to pale yellow
Nonvolatile matter % 3.5-5.0

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 219

Surface dry times in minutes 20-25

Water repellency as per IS Repel water in bead form
12027:1987
Specific gravity@30-degree gms/ml 0.80+0.02

Surface Preparation
Surface should be dry and free from all debris, dirt, oil, grease, wax and all other
contamination, which could prevent penetration.
Clean the saturated dirt of surface by thorough wire brushing, cleaning with compressed air
followed by water washing.
De grease oil & grease by using appropriate solvents.
Allow the surface to dry completely before the application.
Thorough wire brushing followed by sanding with emery paper is recommended

Application
Apply one liberal coat of silicone coating confirming to BS: 6477-1984 simply by brushing
evenly on the prepared surface.
Allow the surface to dry for a minimum of 24 hrs for best results.
Allow it to dry for 24 hrs.
Apply second coat wet on wet, to improve the penetration rate & performance.
Allow it to dry for 24 hrs.
Do not dilute with water or by any other means.
The coating should be applied in 2 coats with a consumption as per Manufacturer
specification or as per DSR.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 220

SOME ITEMS OF ANCILLIARY BUILDING’S

Machine / Equipment foundation : Machine / Equipment foundation of any shape, size &
design as per manufacturer / supplier / GFC drawing shall be Ready mixed M-30 / M-35
grade concrete as per GFC drawing including necessary centering / shuttering,
reinforcement steel , making necessary pockets of required size and shape (by providing
moulds of required shape & size), fixing insert plates / pipes etc. in line, level and plumb
complete as per drawing and grouting the same with cement concrete of richer mix and
finishing, curing etc. complete as directed. Base concrete below the machine foundation shall
be of grade 1:4:8 of 75 mm thickness or as per GFC drawing.

Cable Trenches: Foundation / base slabs & walls of trenches shall be Ready mixed M-30
grade concrete including reinforcement steel as per structural GFC drawing. Base concrete
below the trenches base slab shall be of grade 1:4:8 of 75 mm thickness or as per GFC
drawing. Top of all trenches shall be covered with 6 mm thick chequered plate supported on
M.S. angle nosing / cross support with holdfast embedded in trench RCC wall as per detail
given in GFC drawing. Floor & walls of trenches shall be finished with acrylic cementitious
modified two component waterproofing as per manufacturers specification followed by 15
mm thick water proofing plaster in cement mortar 1:3 (1 Cement : 3 Coarse sand ) admixed
with water proofing compound conforming to IS:2645 as per manufacturers specification
&cement paint over water thinnable cement primer as per specifications. For detail refer
GFC drawings.

Eco Ventilators : Providing & fixing roof air ventilator assembly with base ring 24" ID
(600mm) & 32" OD (800mm) Eco friendly SS construction with FRP Venture dome thickness
1.5 mm and transparent in colour . Central shaft will be made of bright bar material with
internal arrangement of metlon bushing bottom ring & top of SS 304 Grade and 36 Nos
turbine vanes in SS construction etc. complete as per manufacturers specification or as
directed by E-I-C.

Water storage Tanks : Polyethylene water storage tank, IS : 12701 marked, of capacity as
per GFC drawing & of approved make &colour, with cover and suitable locking arrangement
and making necessary holes for inlet, outlet and overflow pipes including fittings and the
base support for tank shall be provided at Security Complex & Security Cabin 1, 2A, 2B &
Main Receiving Sub Station terrace .

Rolling shutters : Rolling shutters shall be of approved make, made of 80x1.25 mm size M.S.
laths, interlocked together through their entire length and jointed together at the end by end
locks, mounted on specially designed pipe shaft with brackets, side guides and arrangements
for inside and outside locking with mechanical device chain and crank operation for
operating rolling shutters complete, including providing and fixing necessary 27.5 cm long
wire springs manufactured from high tensile steel wire of adequate strength conforming to
IS: 4454 - part 1 , ball bearing &M.S. top cover 1.25 mm thick for rolling shutters . Rolling
shutters shall be partly grilled or partly fixed as per architectural GFC drawing. Grilled
rolling shutters manufactured out of 8 mm dia M.S. bar instead of laths as per design
approved by Engineer-in- charge.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 221

G.I. chain link fabric fencing : G.I. chain link fabric fencing of height 1.2 m & gate of height
1.8 m in mesh size 50x50 & G.I. wire of dia 4 mm shall be provided at Transformer yard
encloser complete as per detail given in GFC or as per the direction of Engineer-in-charge.
G.I. chain link fabric fencing shall be fixed as per the detail given below :

a) Providing and fixing vertical post fabricated out of 2 nos. 50 x 50 x 6mm MS angles, 1.8
meter long with 150 x 150 x 6 mm thick base plate, at spacing as per GFC drawing, 500 mm
grouted in toe wall in cc 1:2:4 block of size 230 x 230 x 500 mm.

b) To form rectangular panel frame out of ISA 50 x 50 x 6, of size as per drawing, welded to
vertical posts by means of 4nos box cleats of ISA50x50x6 (2nos on either side), with
necessary welding, nuts and bolts and washers, if required, etc complete.

c) Chain link of size 50mm x 50mm, covering the panels of MS angles, fixed with 32 x 6 mm
MS flat as beading, with making necessary holes and fixing with 10 mm dia 40 mm bolts with
washers, nuts etc. complete.

d) Gate shall be fabricated as per detail given in GFC drawings including required heavy duty
hinges, aldrops& tower bolts complete as directed by Engineer-in-Charge

e) Painting the vertical posts , chain link panel etc. with polyurethane paint as per
manufacturers specification.

Basement Floor Drain : Floor drain of size, slope & details shall be made as per GFC
drawings in pump room & miscellaneous water tanks in Under Ground Tank (UGT) & Water
Treatment Plant (WTP). All drains floor & walls shall be finished with 15 mm to 20 mm thick
water proofing plaster in cement mortar 1:3 (1 Cement : 3 Coarse sand ) admixed with water
proofing compound conforming to IS:2645 as per manufacturers specification &floating coat
of neat cement. Top of floor drain shall covered with M.S. grating of size & detail as per GFC
drawing & finished with polyurethane paint as per manufacturers specification.

Leveling for Basement flooring : Cement Concrete 1:2:4 or as mentioned in GFC drawing
shall be filled below pump room & other area flooring in slope as per detail given in drawing
or as directed by Architect / E-I-C.

MS Structural Steel work

Structural steel of grade E250 confirming to IS2062 shall be used for M.S. Steel ladder, M.S.
Hand rail, M.S. Insert Plates / Base / gusset / stiffener plates as per Architectural / Structural
drawings. M.S. Tube (Pipe / square / rectangular) sections shall be of grade E310 for Pipes
/ E350 for RHS & SHS shall be used for Architectural Pergolas, Façade members if any as per
corresponding Architectural / Structural drawings.

All cable trenches shall be covered with 6 mm thick chequered plate supported on M.S. angle
nosing (not less than angle 40 x 40 x 6mm ) / M.S. angle cross support with holdfast
embedded in trench RCC wall as per detail given in GFC drawing.

All railings including staircases, spiral staircase , around cutouts , terraces etc., shall be MS
railing as per drawing including Fire escape stair if any. MS works in Monkey ladder for
O.H.T., machine Room terrace, Mumty, terrace & Plumbing shaft as per architectural
drawing.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 222

MS supports (angle, tube, channel, etc.) at wall / ceiling for services (Plumbing, Electrical,
HVAC, etc.) shall be provided as per approved shop drawing, design and direction of E-I-C.
MS supports to be fixed with 100x8 mm anchor fasteners in concrete / hold fast with M15
concrete block in brick work in adequate no. of spacing.

M. S. Gate : MS gate in Telephone exchange enclosure wall / M.S. gate & grills in Security
Complex main entrance & pedestrian entrance / M.S. gate & grills in Security Cabin 1, 2A &
2B main entrance & pedestrian entrance shall be fabricate & fixed as per detail given in GFC
drawing including polyurethane paint, all required hardware, MS heavy duty hinges etc., all
completed as directed by Architect / E-I-C .

M.S. Gratings : Top of floor drain shall covered with M.S. grating of size & detail as per GFC
drawing & finished with polyurethane paint as per manufacturers specification. Locations :
UGT & WTP

Painting & finishing of Steel work : All MS structural steel works shall be finished acrylic
aliphatic polyurethane paint as per specification

Under Ground Tank (UGT) / Water Treatment Plant (WTP) / Over Head Tanks

PVC water stops to be compulsorily provided at the construction joint during casting of wall
of watertank and waterproofing compound shall be mixed in Concreting and plastering of all
tanks as per direction of E-I-C in proportion recommended by manufactures

Providing PVC water stops conforming to IS:12200 for construction/ expansion joints
between two RCC members and fixed to the reinforcement with binding wire before pouring
concrete etc. complete with Serrated central bulb (225 mm wide, 8-11 mm thick),all
complete as per E-I-C.

Internal floor & wall finish of all tanks in UGT & WTP / Soft Water Tank in Electric Sub Station
& Plant Room, Academic Area shall be acrylic cementitious modified two component
waterproofing as per manufacturers specification finished with 300x300mm glazed Ceramic
tiles over 12 mm thick bed of cement mortar 1:3 (1 Cement : 3 Coarse sand ) and jointed
with grey cement slurry @ 3.3 Kg per sqm including pointing in white cement mixed with
pigment of matching shade. For detail refer GFC drawings.

Under Ground Tank (UGT) / Water Treatment Plant (WTP) / Over Head Tanks top cover
shall be 455 X 610 mm rectangular double seal C.I. Cover with frame ( light duty ) including
lockable arrangement, the total weight of cover and frame to be not less than 38 kg ( weight
of cover 23 kg and weight of frame 15 kg.) or 500 mm internal diameter double seal circular
manhole cover with frame (medium duty) including lockable arrangement, total weight of
cover and frame to be not less than 116 kg (weight of cover 58 kg and weight of frame 58 kg)
as shown in GFC drawing, Rungs shall be orange colour safety foot rest of minimum 6 mm
thick plastic encapsulated as per IS : 10910 on 12mm dia steel bar conforming to IS :1786
having minimun cross section as 23 mm x 25 mm and over all minimum length 263mm and
width as 165mm with minimum 112mm space between protruded legs having 2mm tread
on top surface by ribbing or chequering besides necessary and adequate anchoring
projections on tail length on 138mm as per standard drawing or as per CPWD specification.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 223

Spouts / sleeves: Wherever shown in Drawings or as required GI spouts / sleeves of

diameter as per GFC drawing, average 400 mm long or as required shall be fixed at all levels
and locations including cutting & making good the walls / concrete with primer & painting
complete as shown in drawing or as directed by E-I-C.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 224

MISCELLANEOUS ITEMS

CLEAN ROOM ITEMS

Modular Wall Panel : Supply and installation of 80 mm thick double skin modular wall
panel system made of 0.8 mm thick Powder coated (60-80 microns) GPSP sheet on both
sides over an aluminium frame work with sealed and insulated interior, PUF (Class O rating)
as a infill material of density 40 +/- 2 kg/m3 is sandwiched between the two skins and sealed
from the exterior by the aluminium frame work, GI floor profiles with leveling adjustment
are provided for reinforcement along the periphery and accommodate the Epoxy/ vinyl floor
flush with wall panels. The wall panels are constructed with an interior Aluminium frame
work for self supporting. Partition to Partition connections are maintained with precision
with aluminium profiles that create uniform seams. wall panels are inter changeable with
doors & vision Panel, special fasteners and profiles are provided for easily dismantable. The
Partition seams are sealed by silicone food grade sealant with a perfectly flush finishing. The
panel will come with prefabricated cutouts for switch sockets with proper flashing & sealing
of cutouts as well as inclusive of PVC conduit of 3 metre length having outer dia. of 32 mm.
Both sides of panels provided with protective film to prevent surface damage during
shipping and installation.

Walkable False Ceiling: Supply and installation of 50mm thick double skin totally flush
walkable false ceiling panel made of 0.8mm thick powder coated (60-80microns) GPSP sheet
on both side over an aluminium frame work with sealed and insulated interior, PUF (Class O
rating) as a infill material of density 40 +/- 2 kg/m3 is sandwiched between the two skins
and sealed from the exterior by the aluminium frame work. The ceiling panel system
comprise of aluminium ceiling grid suitable for easy installation, load bearing, flushed to the
ceiling panels, Indexing screws for easy mounting of the system, reinforcing clamps and
brackets, turn buckles & threaded rods are fastened to the overhead support at fixed
intervals and other hardware for easy & faster leveling of the system etc. All the suspension
material is of Galvanized finish. Panel to Panel connections are maintained with precision
with aluminium profiles that create uniform seams. The Partition seams are sealed by
silicone food grade sealant with a perfectly flush finishing. The panel will come with
prefabricated cutouts for light fixtures &Hepa filters with proper flashing & sealing of
cutouts as well as inclusive of PVC conduit of 3 metre length having outer dia. of 32 mm. Both
sides of panels provided with protective film to prevent surface damage during shipping and
installation.

Doors : Supply and installation of 46 mm thick both side flush doors of size as per drawing,
made of 0.8 mm thick PU painted GPSP sheet with PUF as a infill material of density 40 +/-
2 kg/m3 is sandwiched between the two skins, 1.2 mm thick standard 50mm frame width
GPSP powder coated door frames totally flush with the wall panels, necessary hardware like
stainless steel hinges, stainless steel 'D' type of handles on pull side, stainless steel push
plates on push side, Dorma TS 71 door closers or equivalent , Dead lock with both side key
operation, double glazed view glass of standard size with self adhesive tape & food grade
silicon sealant, SS ball bearing butt hinges, kick plate and concealed automatic door bottom
seal etc.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 225

Coving : Supply and installation of extruded aluminium powder coated covings of R50 to fill
the gap between wall panel to false ceiling and also between wall panel to wall panel at
corners.
1. Covings for wall to ceiling & wall to wall
2. 3D internal & external

View Panels : Supply and installation of view / glazed panels with flush design & size as
per drawing. The view panels provided with 6mm thick float glass on both sides with flush
design, necessary gaskets, food grade silicon sealants and all required accessories.

In-built Return Air riser : Supply and installation of In-built Return Air Risers made of GPSP
sheets in 80mm thick wall panels with 150mm projection at the top of ceiling. The scope
includes necessary stiffeners, flange connections to connect Ducting, permanent magnet/
mechanical holding system to hold the perforated grills on Risers, fixing screws etc.
1. Inbuilt RAR with collar projected 150 mm above the panel and with flange to connect duct

Return Air Risers grills : Supply and installation of Return Air Risers grills ( Powder
coated ) complete as per manufacturers specification or as directed by Engineer - in - Charge.

Pre filter for Return Air Risers : Supply and installation of Pre filter for Return Air Risers
( G-4) complete as per manufacturers specification or as directed by Engineer - in - Charge.

Epoxy flooring : Epoxy flooring for clean room shall be 3mm thick Epoxy Self Leveling
Flooring which include Solvent Free Epoxy Primer, along with top coat in 3mm Thickness (
Self Leveling Epoxy Top Coat) having minimum compressive strength of 55N/sqmm and
Flexural Strength of 31N/sqmm and Tensile Strength of 18N/sqmm(Must satisfy
requirements classified under BS 6319) in approved color on Concrete VDF floor / IPS floor.
Surface preparation should be done mechanically with Diamond Grinder or scarifier
complete as per manufacturers Specification

Air Shower : Supply, installation, testing and commissioning of air shower made of 16 gauge
SS 304 sheet on both sides and working area of 2000mm(W) x 1300mm (D) x 2400mm (H).
The air shower comprise return air collection at bottom with EU-4 pre-filter & perforated GI
powder coated grill, fan with adequate static pressure & EFF-1 class motor, HEPA filter
section with EU-13/14 grade HEPA filters of 99.995% efficiency down to 0.3 particles, air
outlet chamber with SS air nozzles and air velocity through nozzles to be 20- 22 m/s to
ensure efficient scrubbing action necessary to remove particulate matter, vinyl flooring with
conductive and antistatic properties, cleanroom compatible Doors with sandwich type
construction, view panels and light fixture, microprocessor controller to supervise all
functions, emergency stop buttons on both sides of shower, indicator lights on both sides of
shower exterior to control traffic flow in & out of cleanroom. Air shower is designed to meet
minimum of 370 ACPH, minimum of 6 nozzles for proposed working area, fully tested and
certified in compliance with ISO 5 class as per ISO -14644- 2&3 and IES-RP-CC-002-86.

SUN LOUVER SYSTEM

Double Fin Rectangular Sun Louver System : Supply & fixing of Double Fixed Double Fin
Rectangular Sun Louver System of size 50mm thick X 450mm depth consisting of extruded
aluminium square shaft & butterfly clamps covered with aluminium metal cover skin on
both sides, rectangular shaped aluminium fin skin with crowning manufactured out of
0.7mm aluminium alloy AA3005 fixed on both sides of square shaft, fin bearing block,
Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil
 226

axle, axle lock, nylon end cap, end cap screws, and end cap connector & accessories for
fixed system. The maximum module of fin for fixed system is 390mm and the length of fin
shall be determined based on the wind load calculation and deflection, subject to a
maximum length of 3.5 M (for horizontal application) & up to a maximum length of 4
M(for vertical Application).The factory assembled Double rectangular 400mm fin will be
fixed on both ends to suitable Installation frames of MS sections/Aluminium provided by
the contractor. The installation frame shall be fixed mechanically to concrete structure
with MS or Aluminium brackets. The erected substructure shall be aligned within the
tolerances of span/1000 of plumb line and level with a non-cumulative tolerance of a
maximum of 2 mm. The louver Fin skin shall be coil coated in PVDF finish suitable for
exterior applications.

REFLECTING POOL NEAR LIBRARY

Note:-Work shall be done as per respective GFC drawing, nonetheless items are given to
facilitate the Contractor

 Earth work in excavation by mechanical means (Hydraulic excavator)/manual means

over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including
getting out and disposal of excavated surplus earth within the campus. Back filling shall
be done as per GFC drawing.

 Providing and laying in position cement concrete of grade 1:4:8 (1 Cement : 4 coarse
sand(zone-III) : 8 graded stone aggregate 40 mm nominal size) All work up to plinth
level.

 Providing and laying in position cement concrete of grade 1:1.5:3 (1 Cement : 1.5 coarse
sand (zone-III) : 3 graded stone aggregate 20 mm nominal size) All work up to plinth
level.

 Providing and laying in position ready mixed M-25 grade concrete for reinforced cement
concrete work, using cement content as per approved design mix, manufactured in fully
automatic batching plant and transported to site of work in transit mixer for all leads,
having continuous agitated mixer, manufactured as per mix design of specified grade for
reinforced cement concrete work, includind pumping of R.M.C. from transit mixer to site
of laying , excluding the cost of centering, shuttering finishing and reinforcement,
including cost of admixtures in recommended proportions as per IS : 9103 to accelerate/
retard setting of concrete, improve workability without impairing strength and
durability as per direction of the Engineer - in - charge. All works upto plinth level.

 Centring and shuttering including strutting, propping etc. and removal of form for :
Foundations, footings, bases of columns, etc. for mass concrete.
Walls (any thickness) including attached pilasters, buttresses, plinth and string courses
etc.

 Steel Reinforcement for R.C.C. work including straightening, cutting, bending, placing in
position and binding all complete upto plinth level. Thermo-Mechanically Treated bars
/ hot rolled deformed bar of grade Fe500 D or more.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 227

 Brick work with Cement based fly ash (non modular) bricks of class designation 7.5 in
foundation and plinth in Cement mortar 1:6 (1 cement : 6 coarse sand)

 Brick work with Cement based fldy ash (non modular) bricks of class designation 7.5 in
superstructure above plinth level up to floor V level in all shapes and sizes in Cement
mortar
1:4 (1 cement : 4 coarse sand)

 Half brick masonry with Cement based fly ash (non modular) bricks of class designation
7.5 in superstructure above plinth level up to floor V level in cement mortar 1:4 (1
cement : 4 coarse sand). 2 Nos 6mm dia. M.S. bars will be placed at every third course of
half brick masonry.
 Providing and applying waterproofing treatment to the floor & wall sides of reflecting
pool as per GFC drawing, including cleaning of surface to remove dust, loose particles,
etc with compressed air or any other suitable technique depending on site conditions,
grinding any sharp edges, etc as per the instructions of Engineer in charge and post
cleaning applying a two component acrylic modified cementitious coating system at a
total consumption of 1.8 to 2 Kgs/Sqm in two coats complete as per manufacturers
specification or as directed by E.I.C..
The waterproofing system should exhibit the following properties: density : 1.5 to 2
kg/ltr, Elongation at break (ASTM D412): 200 to 250%, Crack resistance at 20 degree
centigrade > 2 mm
All corners in sunkens must be sealed a SealTape S, an elastic waterproof sealing tape
with a woven bonding mesh on each surface and an elastic expansion zone in the center.
The waterproofing should be taken to a height of 300 mm in the vertical.
The work shall be carried out all complete as per specification and the direction of the
engineer-in-charge. The product performance shall carry guarantee against any leakage.

 Providing and laying gang saw cut, pre moulded and pre polished machine cut 18 mm
thick granite stone of required size and shape of approved shade, colour and texture in
footpath, flooring in road side plazas and similar locations, laid over 20mm thick base of
cement mortar 1:4(1cement1:4 coarse sand) grouting the joints with white cement
mixed with matching pigment, epoxy touch ups etc. No mortar to be visible on the
surface in joints, the sample of the Granite stone to be approved by the Engineer - In -
Charge including rubbing, polishing complete.

 Polished Granite of 30mm thickness for wall lining (veneer work), backing filled with a
grout of average 12 mm thick in cement mortar 1:3 (1 cement : 3 coarse sand), including
pointing with white cement mortar 1:2 (1 white cement : 2 marble dust) with an
admixture of pigment to match the stone shade. To be secured to the backing by means
of Cramp.

 Providing and fixing polished 30mm thick granite gang saw cut, premoulded and
prepolished, machine cut for copings and similar locations of required size, approved
shade, colour and texture laid over 20 mm thick base cement mortar 1:4 (1 cement : 4
coarse sand), joints treated with white cement, mixed with matching pigment, epoxy
touch ups, including rubbing, curing, moulding and polishing to edges to give high gloss
finish etc. complete at all levels.

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 Providing and fixing granite of gang saw cut, mirror polished, premoulded and
prepolished, machine cut for wier 1 of required size 270mm wide 90mm thk.,
constructed by joining 3 layers of 30mm thick granite stuck together with araldite
(adhesive), of approved shade, colour and texture laid over 20 mm thick base cement
mortar 1:4 (1 cement : 4 coarse sand), joints treated with white cement, mixed with
matching pigment, epoxy touch ups, including rubbing, curing, moulding and polishing
to edges to give high gloss finish etc. complete at all levels. Wier 1,2,3

 Providing and fixing 50mm thick granite of required thickness gang saw cut, mirror
polished, premoulded and prepolished, machine cut in copings of required size 450mm
wide including grooves 20mm x 20mm @70mm c/c as per design , approved shade,
colour and texture laid over 20 mm thick base cement mortar 1:4 (1 cement : 4 coarse
sand), joints treated with white cement, mixed with matching pigment, epoxy touch ups,
including rubbing, curing, moulding and polishing to edges to give high gloss finish etc.
complete at all levels. Wier 4,5

 Prepolished 30mm thick Granite for wall lining (veneer work), backing filled with a
grout of average 12 mm thick in cement mortar 1:3 (1 cement : 3 coarse sand), including
pointing with white cement mortar 1:2 (1 white cement : 2 marble dust) with an
admixture of pigment to match the stone shade. To be secured to the backing by means
of cramps. The Stone will have 6mm X 6mm grooves cut at 75mm distance centre to
centre as per drawing.

TENSILE ROOF

General & Special Conditions

 Contractor shall be responsible for the procurement, fabrication, supply and installation
of the work specified herein. The Contractor must review the detailed design intent,
accept it and own it.
 Tender drawings and specifications are intended to establish detailed design concept.
Contractor to develop fabrication solution for the detailed design proposal provided in
the Tender Document matching with the design intent, subject to compliance with the
requirements of this Specification, the Architectural design intent, and Engineer’s
approval.
 Performance Requirements: The Contractor shall be responsible for detailing,
procurement, fabrication and installation of the tensioned membrane structure keeping
in line with the architectural intent. All materials provided shall be new and unused.
Contractor must submit the steel fabrication, fabric customization and other fabrication
details for review by the specialist consultant against design intent.
 This tensile fabric structure shall be a frame supported tensioned cable &membrane
structure. The fabric shall have low elongation characteristics under tension.
 Contractor to provide a structure as shown in the architectural concept and detailed
engineering drawings &details as described in this specification.

Submitals by Contractor

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 Data: This should include manufacturer’s product data, including specifications and
installation instructions for each component of the TFS. Include laboratory test reports
and other data, wherever applicable.
 Method Statements – Contractor must submit the method statement for
o Procurement, fabrication, painting of steel structure
o Installation of Steel Structure
o Procurement, cutting & seaming of fabric
o Customization of cables with swaged end terminals
 Detailed Engineering Submission: It should include Shop drawings and additional
calculations (if required to supplement additional details), steel fabrication drawings
and fabric patterning details.
 Samples: For each type of the exposed finish, the TFS contractor to provide the
following
o Fabric: A4 size / 300mm square section of fabric proposed for this Work, with
specified treatments applied. Mark face of fabric.
o Seam, Edge, and Corner Condition: Not less than 300mm long section showing seam,
edge, and corner treatment.
o Aluminium flat bars – sample along with the MTC to be submitted.
o Exposed Hardware Finishes: Manufacturer's standard-size unit.
o Accessories for cable end fittings and cross cable connectors: Manufacturer's full-size
unit.
 All MTC and test reports as required by Engineer-in-Charge.

References
 AWS Dl.l - American Welding Society Structural Welding Code/Indian Standard Codes
 Steel Pipe: IS1161 with material strength as per the detailed design drawings.
Tolerance in material diameter and thickness shall be within the limit as per the code.
 Steel Plates, Shapes, and Bars: E250 Grade as per IS:2062
 European Design guide for Tensile Structure Surface
 ASCE 55 – Tensile Membrane Structures

Warranty
 Warrant Steel Structure materials against defects for a period of 10 year from date of
completion of the work and handing over.
 Warrant fabric materials against defects for a period of 10 years (non-diminishing),
from the date of substantial completion of the work and/or offer the same warranty
offered by the fabric mill that manufactured or supplied the fabric.

Design& detailing
 The structural design & detailing shall comply with applicable codes and regulations of
Indian Standard. Steel structure details for connections shall not fall below the
minimum requirements as specified in IS:800
 Engineering Design documentation of complete tensioned membrane structure shall
meet all applicable codes of Indian Standard.
 The structure shall be designed for loads in accordance with the IS:875with the basic
wind speed applicable to the site as per IS:875
 Design of structural steel shall be done as per the Limit State Design using IS:800.

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 Reference to other international codes / standards can be made at times when

necessary guidelines are not available within Indian Standards

Engineering:
 This part of the specification document covers the basic engineering requirements for
this structure so that the Contractor can review and own the design.
 Engineering calculation: It should include primarily the following items
 Design basis & criterion clearly mentioning the parameters and characteristics for all
the materials that are being used for this tensile fabric structure
 Basic data used for generating wind loads and pressures along with loading diagrams.
 Large deflection numerical shape generation that will ensure a stable, uniformly
stressed, three dimensionally curved shape that is in static equilibrium with the
internal pre-stress forces and is suitable to resist all applied loads.
 Analysis of the fabric (using the stable form) for all applicable external forces / loads.
 Confirmation of fabric strength – Contractor to review and confirm that the fabric
specified in this document is satisfying technical requirement based on fabric analysis.
 Finite element structural analysis of the support frame system.Member sizing
calculations of all primary structural members.
 Connection design including bolt, weld and ancillary member sizing.
 Engineering drawings: In general, all submissions shall be made in minimum A3 size or
requirements of overall project specification. All drawings shall include critical
dimensions, specification, grades of materials, connections, anchoring and foundation
details necessary to understand the submission. The engineering submission to include
primarily (but not limited to) the following drawings
 GA drawing of the structure with the fabric – to include the plans and elevations
 Structural framing drawings – to include plans and elevations along with the basic
sizes of the primary structural members
 Layout and details of foundation and anchoring
 Details of connection between structural members, fabric connection to structural
framing, specific connections critical to the structure, etc
 A General Seam layout of the fabric, typical seam joining details, fabric reinforcing
details, etc.
 Contractor shall be experienced enough to understand Biaxial Fabric test results,
interpret and finalize the fabric compensation values. Using these results, the engineer
to find out the final two-dimensional compensated fabric templates required to
generate the three-dimensional equilibrium shapes
 Structural Authenticity: All drawings and calculations shall be reviewed, signed and
sealed by a structural engineer specializing in TFS design and engineering. This is in
the scope of Contractor.

MATERIALS
Fabric:
A composite made of woven high tenacity polyester yarns PES HT 1100 Dtex. which shall
have unit weight confirming to EN ISO 2286-2 as 550g/m² and thickness 950 microns as per
EN ISO 5084. Fabrics shall have Tensile strength (wrap/weft) 330/330 daN/5 cm confirming
EN ISO 1421 and Tear strength (wrap/weft) 80/90 daN/5cm confirming to DIN 53.363.
Extreme working temperatures -30°/+70°c confirming to DIN 53.363. Fabric shall have the

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porosity of 28% for better light transmission and glare control. Flame Retardancy of the
Fabric should confirm to the B-s2,do/ EN13501-1 or M1/NFP 92-507. Warranty of the fabric
shall be 10 years.

Technical characteristics of Tensile Fabric:

Total weight 550 g/m²
Tensile strength 330/330 daN/5cm(Warp / Weft)
Tear strength 80/90daN(Warp / Weft)
Width 267 cm
Total thickness 0.95 mm
Flame retardancy B-s2, d0 Euroclass EN13501-1
Openness factor 28%

Structural steel framing

 Structural frame shall be fabricated at the factory from structural steel using standard
shapes as per the architect’s requirement following the Detailed Engineering Drawings.
 The steel shall be IS:1161 for structural tubes& Pipes
 The fabrication of the steel shall be in accordance with guidelines set forth in the AISC
steel design manual and the AWS code of structural welding.
 25% of the fillet welding and 50% of the Full Penetration Butt welding shall be checked
by NDT methods.
 The structural members shall be fabricated in as large segments as indicated in the
detailed engineering drawing. Formal approval of the location of the connection (if
different from the IFC drawing) shall be sought prior to fabrication.
 All segments of the assembly will be welded or stamped with the appropriate part
number in a manner that will still be visible after painting is applied.
 All corners and sharp edges shall be ground.
 The steel structure will be Epoxy painted to the following specification
o Sand blasting / shot blasted to SA2.5
o Hot Dipped Galvanising of all steel structure (50 microns)
o Two coats of intermediate coat (50 micron each)
o Final coat (50microns)
o Total painting thickness - a minimum of 200 DFT.

Cables and End fittings

 This part of the specification is applicable wherever there are requirements of cables
and associated fittings.
 All structural wire rope shall be made from Wire Rope conforming to AISI Steel Cable
Manual requirements with SS316. The cable should be IWRC improved plow steel. All
cable terminations and connectors shall be Stainless steel (SS316). Cables should be
designed with a minimum safety factor of 2 on breaking strength.
 All cables and end fittings shall be delivered clean and thy.
 All swaged fittings shall be designed and attached to develop the full breaking strength
of the cable. Thimble end fittings shall develop a minimum of 110% of the cable
breaking strength.

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 Cross cable coupler for connecting multiple fabric shall be made out of Casted /
machined item made of SS316 and shall be provided with a PVD coating matching with
the coloras desired by the Engineer in Charge.
 Attach a tag indicating the cable length and mark number to each cable assembly.
 Testing requirement: A random selection of 2 cables will be picked and sent for third
party testing with a loading upto 55% of the Minimum Breaking load (or 110% of the
allowable load with a factor of safety of 2.0).

Bolts and related fasteners

 Fasteners and hardware accessories shall be of types and sizes best suited for the
purpose as recommended by the structural engineer on record.
 Fasteners used on main structural members shall be hot-dipped galvanized high-
strength bolts including nuts and washers and conforming to Gr.8.8 minimum as
applicable. All other fasteners shall be adequately sized and treated for corrosion
protection.
 Concrete anchor bolts shall be Gr.4.6 or equivalent and be Hot-dipped Galvanized.

AUTOMATIC SLIDING DOOR OPERATOR

Providing and fixing automatic bi-parting sliding doors with 12mm clear toughened glass
shutter.
Automatic sliding door operator shall be as per approved dwg., Compliant with European
standards and produced according to the guidelines for power-operated windows, doors and
gates, BGR 232, the UVV and the VDE regulations. TÜV design tested, tested according to the
low voltage guidelines, fulfils DIN 18650 standards for Pedestrian Safety, TUV Design Tested
for Durability of 1 Million Cycles. The track profile should be separate from the main profile
for enabling reduction in vibration insulation. Operator length = 6250 mm, Maximum clear
passage opening width = 3000 mm, maximum clear passage height = 2500 mm, includes
micro processor controlled drive unit, with self learning mechanism, program selector with
knob, motion detector (eagle 6 radars, 02 nos), mechanical components, toothed belt, cover
profile, floor guide for frameless glass (02 nos), glass clamping rail (02 nos), safety device-
light barrier (01 pair). Body finish : standard silver anodised operator profile,
electromechanical lock with 12 mm plain toughened frameless glass for complete elevation
- 2 moving panels. UPS of 750 VA shall be provided, which will give power backup of 20 min.
Only & if the duration of power cut to the operator is more than 30 min.,then separate
arrangement needs to be done for the same as automatic operator requires uninterrupted
stabilized power supply. The above work complete in all respect as per approved shop
drawings and to the satisfaction of engineer-in-charge / architect consultant.

FRAME LESS DOOR

Providing & fixing manual frameless double leaf glass doors with 12 mm clear toughened
glass and S/S patch fitting (PT standard) of grade 304 : such as Top pivot, Top patch, Bottom
patch, Corner lock with EPC, lock keeper plate & stainless steel grade 304 handles 38 mm
dia and 600 mm long or as approved by the Engineer in charge and floor spring conforming
to DIN EN1154 with adjustable spring strength EN(1-4) and Tested for durability of 500,000
cycles.. The above work complete in all respect as per approved shop drawings and to the
satisfaction of engineer-in-charge.

GLAZED PARTITIONS

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Supply and Fixing of Full Height demountable Glass partition including doors with 10mm
Toughened Glass using Frame profiles 100 x 25 mm upto a height of maximum 4m or as per
drawing using minimum 20 micron matt finished Anodised Aluminium in required colour
& shade.The Fixed glass to be fixed using base profiles 100 x 25 mm at Top & Bottom &
support profile 100 x 25 mm at sides. The profile size to be 100x25MM to be fixed on to the
floor/wall/ ceiling as per the architect design. Over panel Profile of 100 x 50 mm to be used
for Over panel, H Junction profile to be used at all Glass to Glass vertical joints, 90 Deg L
Junction Profiles and T Junction profiles necessary as per design. End Profile 100 x 25 mm to
be used for Open glass edges and all around the door frame with seals and Over Panel End
profile including filling the joints if required with Silicon sealant structural grade and
weathering grade of Dow corning - USA or "GE Silicon - USA" or "WACKER - Germany".,
complete as per detailed drawings & approved shop drawings. (The contractor must provide
detailed shop drawings of individual profiles and also details of any other profiles that may
be used clearly indicating all dimensions.)
The Profile shall be matt natural anodized, the Profile Manufacturer to supply all the
necessary clips, seals and fixing accessories for the system.All Profiles to be with 2 mm Gauge
thickness .

Hardware for Glazed Partition single or double leaf doors

Providing & fixing Dorma or approved equivalent make stainless steel grade 304 patch
fitting in frameless glass single or double leaf door shutters which include Top pivot, Top
patch, Bottom patch, Corner lock with EPC, lock keeper plate and 'H' shape pull handle (450
mm x 25 mm) SS 304 grade and floor spring with adjustable spring strength, suitable for
door leaf weight upto 120 kgs, max leaf width 1100mm and Tested for durability of 500,000
cycles & other accessories including the cost of screw & all other incidentals complete as
per detailed drawings & approved shop drawings.

Glass Block

Glass Blocks (transparent / colour) of approved make of size 190mm x 190mmx 80mm
(approximate weight 2.0-2.5 kg per block) with 10 mm joint to achieve a 200 mm module
with mortar grout of white cement and marble powder in proportion of 1: 2 respectively
including 6mm dia steel reinforcement bars to be laid in horizontal and vertical joints as per
manufacturers specification.
Glass block panels shall be supported on all sides by fabricated powder coated (minimum
thickness of powder coating 60 micron) aluminium frames of nominal dimension 80mm x
40mm x 2mm size , and block should rest on top of the cement mortar 1:3 ( 1 cement : 3
sand). Aluminium frames shall not be load-bearing and shall be fixed to the surrounding
structure.
The joints between the blocks to be sealed with transparent / colour Silicon Gel sealant of
approved make complete as per manufacturer specification, as per drawing and instructions
of the Architect .
Location : Glass block shall be provided at various location & levels as per GFC architectural
drawing.( Basic cost of Glass block excluding GST should not be less than Rs. 160/-).

PRECAST CEMENT CONCRETE JALI

The jali shall be of cement concrete 1:2:4 (1 cement 2 coarse sand:4 stone aggregate 6 mm
nominal size) reinforced with 1.6 mm thick mild steel wire, unless otherwise specified
including centering and shuttering, roughening cleaning & fixing.

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The jali shall be set in position true to plumb and level before the joints sills and soffits of the
openings are plastered. It shall then be properly grouted with cement mortar 1:3 (1 cement
:3 coarse sand) and rechecked for levels. Finally the jambs, sills and soffits shall be plastered
embedding the jali uniformly on all sides.

GRC Customized Moulding/Cornice/Panel casted with Power Spray methodology

Glass Reinforced Concrete (G.R.C) Moulding / Cornice / Panel in approved size, pattern,
design, shade and thickness of 50mm on frame and internal member in 18 – 20mm thick
casted with layering technique Power Spray methodology have weight approximately
between 5 – 7 Kg per Sq. Ft. and color of approved make. The moulding / cornice / Panel
should be made from ’53 grade’ White Portland Cement manufactured by ‘JK Cement’ or
equivalent, Fine graded Quartz & Silica Sand, Alkali Resistant Glass Fiber manufactured by
‘N.E.G ’ or equivalent, Super Plasticizers manufactured by ‘ZPXRC’ or equivalent, Polymers
manufactured by ‘Dow Chemicals’ or equivalent and U.V resistant Synthetic inorganic
pigments should be used for pigmentation manufactured by Lanxess / ‘BAYFERROX ’ or
equivalent. The material casting should take place in FRP Moulds. The GRC flexural strength
average L.O.P should be above or equivalent to 6 N/mm2 & M.O.R should be above or
equivalent to 15 N/mm2 for tests done on 28 days cured samples.
The fixing of panels should be ‘Dry fixing’ i.e. to be done with stainless steel grade 304 L
Clamps, anchor fasteners of Hilti / Fischer or self - tapping screws or as per approved shop
drawings approved by E-I-C.

CRAFT PANELS IN ACCESS CORRIDOR

INTRODUCTION

The proposed Indian Institute of Technology Campus at Bhilai has a central covered
walkway, the Access Corridor, which is the spine connecting the different buildings on the
Campus. This walkway, designed as a steel structure, surrounds a central open space - the
lungs and the recreational space of the campus.

The architects, have conceptualized the access corridor to include a narrative that speaks of
the people and the culture of the land where the institute is located. These handcrafted
works of art depicting local culture will serve to connect the users of the building with the
people, their culture and the environment at large, that have inspired the creation of these
works of art.

Two craft traditions – loh shilp or Wrought Iron Craft and Gond painting of the Gond tribe is
being used in the making of these installations.

This Design Document is a guide to the DESIGN INTENT for Crafts Installations and suggests
the process that should be followed in developing and making these Installations by a
collective team comprising of Artisans and Designers.

DESIGN INTENT
Developing Arts and Crafts Installations involves professionals from a cross disciplinary
team in addition to the Artisan/Artisan Community, especially where these Installations fit
into a larger comprehensive design scheme of the built environment. This is precisely, why
the design and detailing of the Installations is done in several layers and stages, with
frequent cross-consultation between the different consultants and agencies at work.
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This document establishes the Design Intent of the Crafts Programme for the proposed
Indian Institute of Technology at Bhilai.

Notes
 The information in this document is to be read in conjunction with the Architectural,
Structural, Plumbing and Electrical Drawings.
 Dimensions and sizes are mentioned for reference only. Final dimensions and
measurements are to be measured from the site and adjusted during the making of
the Installations.
 The medium and specifications (MS Sheets, etc) may be revised during the making of
the prototypes in consultation with the Architects.

THE GONDS
The Gondi (Gōndi) or Gond people are an Adivasi group (indigenous people) of Indiathat
speak theGondi language. They are spread over the states of Madhya Pradesh, eastern
Maharashtra (Vidarbha), Chhattisgarh, Uttar Pradesh, Telangana, Andhra Pradesh, Bihar and
Odisha.
The Gonds are the largest tribal group in India and as per the 2001 Census of India, their
population was 11 million.
Paintings as well as other art forms have always been quite popular with tribal people in
India, especially the Gond tribe. The Gond people have a belief that viewing a good image
begets good luck and they decorate their walls and the floor of their houses with traditional
tattoos and motifs. Among the Gond, it is the most prominent among the Pardhan Gonds who
are renowned for their artistic skills, be it painting or music. Gond paintings have also been
used by the Gond people as a way to record their history.

DESIGN APPROACH
The Installations at IIT Bhilai, are based on the narratives and beliefs of the Gond Community
as expressed in two of their most practiced crafts – Wrought Iron and the Gond Paintings.
The Gonds believe that all things are inhabited by a spirit and, consequently, are sacred. Gond
paintings and Wrought Iron Craft are a reflection of man’s close connection with his natural
surroundings.
The Designers wish to incorporate this value system of the Gonds to establish Man’s
dependence and connection with the environment and the planet. The works of Art establish
how contemporary design and architecture needs to acknowledge the wisdom and beauty
in traditional expressions of Art and Design in general, and that of the Gonds in particular.
The development of these works of Art are based on the renditions of the Gond Paintings,
but the production and making of these use the techniques of the Wrought Iron Craft. The
process, is unique, as it employs a unique synergy of two different crafts of the Gonds to
create elements for an Architectural space. While neither of the two crafts, can singularly
achieve the stated objectives, a combination of the two crafts aptly produces elements that
address the requirements of the Architects.

WROUGHT IRON CRAFT

Lohshilp or the Wrought Iron Craft of Chhatisgarh is essentially a tribal craft of the Gond and
Maria tribes in the Bastar region, also home to some of the richest iron ore deposits in the
country. These tribes have extracted iron from the ore and used it to forge simple tools and
implements such as arrowheads, axes, hammers, etc. for a long time. Kondagaon,
Umargaon and Gunagaon are the three villages in the Bastar district where this craft is
practiced.

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The Gond tribe worships ‘Budha Dev’ as God, who they believe resides in the saja tree, also
known as Indian laurel. This tree used for rituals, is considered sacred and a symbol of strength
by the local tribes. But slowly when Gonds understood the strength of iron, they started
believing that their God is in iron too. Cemented platforms were built under the tree and iron
tridents, spears and chains were kept as religious symbols. Ironsmiths started experimenting
with the religious art forms. They created wrought iron lamps (diya) and also decorated it with
animal motifs. They started making figurines of Budha Dev riding a horse. As their art evolved
with time, their work gained attention and promonence. Ironsmiths got the opportunity to
travel to places with their craft and also learn from the exposure. This resulted in more
experimentation with the forms and sizes. This can be seen in the current form of the craft
where an animal is depicted in various postures and sizes.

Wrought Iron Craft of Bastar - Making of Lohshilp by Palash Vaswani, IDC, IIT Bombay.

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PAINTING
Gond paintings can be described as ‘on line work’. Art is created out of carefully drawn
lines. Lines are used in such a way to convey a sense of movement to still images. Dots and
dashes are added to impart a greater sense of movement and increase the amount of detail.
Another very striking facet of Gond paintings is the use of bright vivid colours such as
white, red, blue and yellow. The paints are usually derived naturally from objects such as
charcoal, coloured soil, plant sap, mud, flowers, leaves and even cow dung.The use of
patterns to infill the larger forms on the canvas charaterises this art form. There is a sense
of balance and symmetry that can be observed in the pattern used, such as spiral forms
along with trees, leaves, animals and human figures. The placement of motifs showcasing
village life and the blending of human figures with rituals and nature depict the Gond’s
inherited skills and creativity.

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DESIGN DEVELOPMENT AND PRODUCTION

This document forms the basis for the making of the Installations and will involve the
following steps:

01. Artwork Development

a) Narrative Development
b) Content Mapping as per locations
c) Scaled Artworks 10:1, of Gond Painting to be made by a Master Artisan.

02. Prototypes and Sampling to establish the following:

A sample prototype needs to be developed in true scale of a one complete panel for
the Access Corridor to establish:
a) Craft Technique
b) Material

03. Structural Requirements or support MS Solid/Hollow Sectionswherever required

04. Periodic Evaluations and Revisions during Execution

05. Installation and Finishing

Craft Installations necessarily use the language of the Artisan and the Artwork and Design is
derived from the Traditional Craft. The Designer must work in tandem with the Artisan and
the Architects to establish the direction and outcome of the Design Intent.

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IMPLEMENTING AGENCY
The work of Curation and production of Artwork, sampling, prototyping, production and

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final installation at site should ideally be undertaken by a single agency which has adequate
experience of producing similar works of craft.

Execution of the work will require coordination between all members of the Team and
frequent consultation at various stages of design development and production. The design
Team is an integral part of this work, as every panel has to be detailed with patterns,
components need to be configured and resized to an appropriate scale and the composition
and integration of the finished piece needs to be evaluated as per site locations.

Resources required for this entire work would include a team with the following skills:

01. Architect/ Designer/ Product Designer

02. Artist/Illustrator/Curator
03. Fabrication Team
04. Artisans – Wrought Iron Craft
05. Artisans – Gond Art
06. Painters/Polishers
07. Craft Co-ordinators
08. Support Staff

NOTES AND REFERENCES

This document is to be read with the Architectural,Structural and Electrical drawings for
the Campus.

Resource Person (Master Craftsman)

01. Tatiram Vishvakarma, Wrought Iron, Kondagaon

02. Tiju Ram Vishvakarma, Wrought Iron, Kondagaon
03. Sunil Vishvakarma, Wrought Iron, Kondagaon
04. Bhajju Singh Shyam, Gond Art

Implementing Agencies

01. Collective Craft, studio august pvt ltd, HIG 223, Kanan Vihar, Bhubaneswar 751031, Odisha,
Ph 9971293327
02. Shabari Chhattisgarh State Emporium, Gallery No. 03, Rajiv Gandhi Handicrafts Bhawan,
Baba Kharak Singh Rd, Raja Bazar Road Area, Connaught Place, New Delhi, Delhi 110001
03. DCC Craft Development Pvt Ltd, 116A/1, First Floor, Shahpurjat, New Delhi, Delhi 110049
04. Kaaru, Plot No. 07, Club Drive Road
Ghitorni,New Delhi -110030, Ph: 9599989361

NOTE:- The work shall be executed by contractor through one of the implementing agencies using
the resource persons mentioned above but not limited to the above list.

LIST OF PREFERRED MAKES OF MATERIALS (CIVIL WORKS)

Preferred makes of materials to be used in the work is given below and Contractor shall
procure the material mentioned in the list from any one of the preferred makes only. The

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Engineer in charge reserves the right to select any of the makes/brands indicated in the list
of approved brand/make. The tenderers shall quote his rates on the basis of the price for the
best quality product of the brand/make stipulated for the item of work in the schedule of
quantity/specification/list of preffered brand/ make. In case of non availability of these
makes, the Engineer-in-charge may allow use of alternative BIS marked materials/makes
in the work. Non BIS marked materials may be permitted by the Engineer-in-charge only
when BIS marked materials are not manufactured.
.

S. No. ITEM DESCRIPTION BRAND/ MANUFACTURER

1 CEMENT

a Ordinary Portland Cement 43 Grade Ultratech , Ambuja, ACC, J.K, Jaypee

b Pozzolona Portland Cement Ultratech , Ambuja, ACC, J.K, Jaypee

c White cement Birla White, J.K. White ,Lafarge

2 STEEL

a Reinforcement Steel SAIL, TATA, JSW,RINL,JSPL

Structural Steel Sections:

b Beams, Channels, Tees, Flats, Angles TATA, SAIL, JSW, RINL,JSPL
Bars (Round, Square, Hexagonal).

c Structural Hollow steel sections TATA , SAIL,JSW,RINL,JSPL

d Structural Tubular Sections / M.S. Pipe TATA , SAIL, Jindal , RINL

Salem Steel, Jindal stainless steel or

e Stainless Steel
approved equivalent

f Welding Electrodes ISI approved brand

g Admixture/Plasticizer Fosroc, CICO, SIKA, BASF,Bal Endura,Dr.Fixit

Factory made cover block of required A.S.R Cover block, J.K,Conbextra, KGM,
h
grade KK,Manhole

3 Expansion Joints

Durafill (Armour Board), Paramount or

a Expansion Joint filler
approved equivalent
Expansion Joint System 100mm thick for Migua FSL 113/35 & Migua FSL 113/35
b floor with Provision of Moisture/water corner , CS ALS-400 & CS ALSW-400 , Vexcolt
Barrier Membrane Megatec 300-A01-100 & 300-A02-100
Migua WJC 100 & Migua WJC 100 Corner, CS
Expansion Joint System 100 mm thick for
c SM4N & CS SM4NC, Vexcolt Megatec 360-A07-
internal wall & ceiling
100 & 360-A09-100
Expansion Joint System 100 mm thick for Migua WJC 100 & Migua WJC 100 Corner, CS
d external wall with Provision of SM4N & CS SM4NC, Vexcolt Megatec 360-A07-
Moisture/water Barrier Membrane 100 & 360-A09-100

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 251

Expansion Joint System 150mm thick for

Migua FSL 173/35, Vexcolt Megatec 300-A01-
e floor with Provision of Moisture/water
150, CS (Construction Specialties)
Barrier Membrane
Expansion Joint System 150 mm thick for Migua WJC 150, Vexcolt Megatec 360-A07-
f
internal wall & ceiling 150, CS(Construction Specialties)
Expansion Joint System 150 mm thick for
Migua WJC 150, Vexcolt Megatec 360-A07-
g external wall with Provision of
150, CS(Construction Specialties)
Moisture/water Barrier Membrane
Migua FSL 77/35 & Migua FSL 77/35 corner ,
Expansion Joint System 25 mm thick for
Vexcolt Megatec 300-A01-25 & 300-A02-
h floor with Provision of Moisture/water
25(Construction Specialties)
Barrier Membrane

4 BRICKS

a First class burnt clay bricks 1st Quality Locally best available as approved

b First class Cement based Fly ash bricks 1st Quality Locally best available as approved

c AAC Blocks Ultratech, Siporox India ,ECOLITE, ECOREX

Extruded Polystyrene Board in cavity Owens Corning, Dow corning, Supreme

d
wall
Ultratech, Ardex Endura, Ecolite, Ferrus crete
e AAC Blocks Adhesive
ECOREX

5 TILES / FLOORING

Kajaria , H& R Johnson (India) Ltd,

a Ceramic Tiles /Glazed Tiles Somany. NITCO

Kajaria - Eternity series , Johnson : Endura

series, Restile - Original collection Granamite
Antiskid full bodyVitrified floor tiles 9 to
b , Somany : Durastone ( geostone or Duragres
10 mm thick of size 60 X 30 cm / 60 X 60
series).
cm

Johnson's : Meteor series & Restile Impacta

Antiskid Vitrified Industrial floor tiles 20 series : Hardstone & equivalent series of
c
mm ( +/- 1 mm ) thick of size 60 X 60 cm Kajaria and somany

Johnson's : Meteor series, Somany : Durastone

Antiskid Vitrified Industrial floor tiles 15 ( geostone series), Restile Impacta series :
d
to 16 mm thick of size 60 X 60 cm Hardstone

Kajaria - The Trend Eternity series , Restile -

Matt / polished Vitrified wall tiles 8 to 9 Original collection Granamite , Somany :
e
mm thick of size 60 X 30 cm / 60 X 60 cm Duragres

Matt / polished / semi polished Vitrified Kajaria - Stonegress , Johnson endura -

f floor tiles 9 to 10 mm thick of size 60 X 30 Sandex plus series, Somany : Somany : Tesoro
cm / 60 X 60 cm series, Restile - Original collection Granamite

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 252

g Heat Resistant Tile Thermatek, NITCO, Kajaria, somany

Laticrete 3642 of Laticrete or admixture E

h Tile Adhesive 135 of Ardex Endura or equivalent of SIKKA,
PIDILITE
Latapoxy 2000 manufactured by M/s
i Tile Grout Laticrete or epoxy grout of Ardex Endura or
equivalent of SIKKA, PIDILITE

j Pavers / Inter locking Pavers Koncrete, Pavit , Nitco Tiles, Unitile.

R25CE of Ardex Endura / Nitofloor SL

k 3mm thick Epoxy Self Leveling Flooring
3000 of Fosroc or equivalent approved

6 WATERPROOFING

Tapecrete P151 CICO Tech. Ltd and

a Acrylic Modified Cementitious Water Armourcrete Structural Water Proofing
Proofing Compound Company Pvt. Ltd or approved equivalent
Over deck Insulation (Extruded Soprema France , Owens Corning, Dow
b
Polystyrene) Corning, Supreme
Flagon ( Soprema France), Sika, Sintec or
c Polyvinyl chloride roof membrane
approved equivalent
Geoland HT 200 of SOPREMA, Sika
Geotextile felt NT fibers of polypropylene
d geotextile,supreme
weight > 200 gr /sqm
Rooftex 150 of SOPREMA, Sika geotextile,
e Polyester geo textile minimum 150 gsm Texsa or supreme

Construction Chemical Fosroc Chemicals (India) Ltd., Sika India Pvt.

f
Waterproofing Ltd., CICO Tec. Ltd, PIDILITE,BASF

g 500 GSM Polypropylene Geotextile Soprema, Sika, Sintec

Thermo Plastic Olefin (TPO) roof

h Soprema, Sintec ,supreme
membrane

i Drainboard Soprema, Sika, Sintec or equivalent

Acrylic cementitious modified two

j Sika ,Soprema, Fosroc, BASF
component waterproofing
Single or Two Component root Resistant
k Sika ,Soprema, Fosroc, BASF
Polyurethane waterproofing
Standard single component pitch modified Nitoproof 600 of Fosroc , BASF, Sika or
l
polyurethane waterproofing membrane equivalent.

7 WOODWORK

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 253

A Commercial Board Greenply/ Duro / Century/Kitply

B Flush door shutters Greenply/ Duro / Century/Kitply

c Marine Plywood Greenply/ Duro / Century/Kitply

Greenlam (Greenply Industries Ltd.),

D Laminate Merino (Century Laminating Co. Ltd),
Formica India Division. Sunmica
Century Ply boards (India) Ltd., Greenply
E Natural veneer Industries Ltd., Sarda Plywood Industries,
Merino
Well seasoned Oak wood / Well seasoned
F Wall Panelling
Cedar wood
NUWUD, Century Ply boards (India) Ltd. ,
G MDF Boards Greenply Industries Ltd., Sarda Plywood
Industries.

8 GLASS

A Float Glass Saint- Gobain , Modi Float, Asahi,.

B Mirror Glass Modi Float, Asahi India,Saint Gobain

1. ST 467 toughened of saint Gobain,

6 mm thick High performance toughened
C 2. 6 mm Coral of AIS
glass
3. Equivalent model of pilkington
1. 6mm clear HS+1.52mm PVB+6 mm SCN 145
HS of saint Gobain,
13.52 mm thick Laminated,glass for
D 2. 6mm HS glass+1.52mm PVB+6 mm HS
skylight
natura plus of AIS
3. Equivalent model of pilkington
1. 6mm SKN 465 toughened+12mm airgap+6
mm clear toughened of saint Gobain,
2. 6mm Green lite Plus toughened + 12 mm
E 24 mm thick Double glazed insulating glass
airgap + 6 mm clear glass toughened of AIS
3.Equivalent model of pilkington

1. 6mm Clear toughened ( 1.52 PVB) 6mm SKN

465 Toughened + 12mm Air Gap + 6m Clear
Toughened of saint Gobain,
31.52 mm thick Double glazed insulating 2. 6mm Clear toughened ( 1.52 PVB) 6mm
F
glass ( with 11.52mm laminated glass ) Green lite plus Toughened + 12mm Air Gap +
6m Clear Toughened of AIS
3. Equivalent model of pilkington

1. 6mm clear toughened+1.52mm PVB+6 mm

ST 467 toughened glass of saint Gobain,
13.52 mm thick Laminated glass for spider
G 2. 6mm toughened glass+1.52mm PVB+6 mm
glazing
toughened Coral of AIS
3. Equivalent model of pilkington

I 12 mm thick toughened glass Saint- Gobain , Asahi, pilkington,

9 FALSE CEILING

A Gypsum Board Saint Gobain Gyproc, USG Boral, Knauff

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 254

Aluminium Lay in tile False ceiling /

B ArmStrong, Hunter Douglus, Durlum
Aluminium Micro Perforated ceiling
Aluminium clip in tile False ceiling
C ArmStrong, Hunter Douglus, Durlum

D Insulated glass wool U.P. Twiga , Owens Corning, Saint gobain

E POP / White cement putty Birla, JK , Asian Paint & Berger

F Calcium silicate board Armstrong, Ramco, Promat

10 WEATHER SEALS

Enviroseals, Anand Reddiplex, Supreme

A Rubber seals

Enviroseals, Anand Reddiplex , Supreme

B Brush Strips

Dow Corning, GE Silicon, Fosroc

C Expansion Joint Filler Chemicals(India) Ltd.

Silicon Structural Sealant & Weather

D Dow Corning, G.E., Wacker
Sealant
Polysulphide Sealant Fosroc, Pidilite, Roff, MC Bauchemie
E

11 ALUMINIUM
A. Aluminium Hindalco , Jindal,indalco
Hindalco, Jindal,indalco
B Curtain Glazing

C Adhesive tape Norton ,3M supreme

D EPDM Gasket Anand Reddiplex, Enviroseals supreme

E Aluminium spacers Lisec / Alupro or equivalent

Automatic bi-parting sliding door

F Dorma (ES 200 easy ) / Geze / Haffle
operator
Stainless steel grade 304 patch fitting (PT
G standard) & hardwares for frameless Dorma, / Hafele / Hettich
doors
Demountable Glass partition including
H doors with Stainless steel grade 304 Patch Dorma / Alloy / Jeb
fittings & hardwares

I PVB Dupont/ Solutia /Kuraray or equivalent

12 HARDWARE

a Spider & Patch fittings Dorma , Gaze, Hafele

Dorma BTS 65 , Gaze TS 500 NV, Hafele

b Floor Spring
932.79.040

c Surface mounted door closer Dorma TS 68 Door Closer with Std Arm,

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 255

Hafle:- 499.30.002, GEZE 1010001 :

Stainless steel grade 304 satin finish Dorma :3200-2, Hafle 911.81.080 , GEZE :
d
tower bolts 150mm 98347009

Stainless steel grade 304 satin finish Dorma : 3200, Hafle 911.81.083 , GEZE
e
tower bolts 300mm 98347006

Stainless steel grade 304 satin finish Dorma : TGDI-D 150, Hafle:- 903.01.601,
f
pull handle 19 mm dia x 150 mm long GEZE 98163089

Stainless steel grade 304 satin finish Dorma : TGDI-D 200. Hafle:- 903.01.602,
g
pull handle 19 mm dia x 200 mm long GEZE 98163078

Stainless steel grade 304 satin finish Dorma : TGDI-D 300. Hafle:- 903.05.700,
h
pull handle 22 mm dia x 300 mm long GEZE 98163135

Stainless steel grade 304 satin finish

i Dorma : TGDI-H 1200, Hafle, Geze
pull handle 38 mm dia x 1200 mm long

Satin stainless steel Foot operated

j Dorma : 4017 / Hafele 938.04.101
Door Stopper with rubber buffer

Satin stainless steel wall mounted Dorma : 4012 Hafle:- 937.13.530, GEZE :
k
Door Stopper with rubber buffer 98307002

Single point locking handles without PL 205H of PULSE ( LGF Sysmac ( I ) Pvt
l
Key for window Ltd / HD 03 of PEGO

Mortise lock with Euro Profile half Dorma : Pure 8100 Series type 2 package,
Hafle 911.02.164 + 916.96.106 +
m Cylinder with one side Key & pairs of
903.92.586, GEZE 98482004 +98484001
lever handle with rose & escutcheons. +98245211

Mortice bathroom lock , strike plate, Dorma : Pure 8100 Series type 3, Hafle
911.02.149 + 902.53.922 + 909.00.721 +
n bathroom escutcheons with indicator &
903.92.586, GEZE :
spindle & pairs of lever handle with rose 98484003+98482004+98482003

Backset dead lock with Euro Profile

Dorma : 706 Dead lock type 1 package
o Cylinder with both side Key operation (60mm EPC), Hafle 911.22.551 and
916.96.006 + 903.99.664, GEZE : 8344021
including strike plate & escutcheons
903.10.625+901.02.401), Dorma :( PHCR
External Trim with panic device with -1, PHCRT 2905, 3005) , GEZE : 98536301
p
cylinder & Key + 98536302, Hormann : 1200 series,
1183

q Stainless Steel Ball bearing hinges Dorma , Gaze, Hafele

Electronic Deadbolt for double action

r Dorma , Assa Abloy ,Hafele
swing doors

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 256

Single electromagnetic lock with 600

lbf (2668 N) holding force, surface-
mounted, with lock status sensor and
s Dorma , Assa Abloy,Hafele
red/green LED indicator,anodized
aluminium finish. Power supply: 12/24
V DC

Double electromagnetic lock with 600

lbf (2668 N) holding force per magnet,
surface-mounted, with lock status
t Dorma , Assa Abloy,Hafele
sensor and red/green LED indicator,
anodized aluminium finish. Power
supply: 12/24 V DC

Single electromagnetic lock with 1200

lbf (5338 N)holding force, surface-
mounted, with lock status sensor and
u Dorma , Assa Abloy ,Hafele
ed/green LED indicator, anodized
aluminium finish. Power supply: 12/24
V DC

Double electromagnetic lock with 1200

lbf (5338 N) holding force per magnet,
surface-mounted, with lock status
v Dorma , Assa Abloy ,hafele
sensor and red/green LED indicator,
anodized aluminium finish. Power
supply: 12/24 V DC

w Friction Stay Hettich, Hafele, Geze, Ingersoll Rand

1. Grant 1260 System of Hettich

consisting : item code -1133284 (2unit)
+50146(1unit)+50125(1 unit) + 50141
(2unit) ) , along with 4 pair butt hinges of
SS304 finish of Hettich make having size
4*3*3 (item code- 142381) and 2no's
tower bolt of hettich make inSS304 (item
code9228400-) alongh with SS finish
x Hinged type sliding folding system
handle Spira with end cap L-2mtr, ht-
43mm (item code-115314+115298)
2. Fold 84 EF system of Haffle consisting
: Article code 943.03.000 ( 2 sets ) +
926.32.160 ( Hinges 12 Nos) +
940.99.932 ( 1 Nos running track of 3
metre length ) + 902.01.422 ( flush
handle SS 4 nos ) or approved equivalent

y Fasteners Hilti India Pvt. Ltd , Fischer or equivalent

13 PAINTS & DISTEMPERS

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 257

a Acrylic Distemper Asian, Berger, I.C.I .

b Synthetic Enamel Asian, Berger, I.C.I .

c Acrylic/ Plastic Emulsion Asian, Berger, I.C.I .

d Cement Paint Snowcem, Durocem.

Asian paint Apex Ultima / Berger
Premium Acrylic smooth Exterior
e ;Weather coat all guard / ICI Dulux
Paint with silicon Additive
:Weather Shield max
f Red oxide Asian, Shalimar, Acroprime.

g Silicon paint Asian, ICI, Berger

Aliphatic Acrylic Polyurethane finish
k Asian / BERGER/ICI
paint

14 STONES

a Desert Gold, Amba white, Nosera Green or

Granite stone 18 mm thick
approved equivalent
First Quality as per approved sample/
b Marble
approved quarries
First Quality as per approved sample/
c Kota Stone / Tandur stone
approved quarries
Rajim , Cuddapah & Flag Stone ( sikosa), Katni First Quality as per approved sample/
d
stone, Bilha stone approved quarries
First Quality as per approved sample/
e Red Mandana Stone
approved quarries

15 FIRE & ACOUSTIC DOORS

a Fire door & Fire rated hardwares Shakti Hormann Ltd, Navair , MPP shrodder

Borosilicate clear toughened Fire Glass

b Fire Glass
minimum 6 mm thick of Schott or Saint
Gobain or Asahi

c Accoustic cum fire doors Navair / Promat/ SUKRI

16 MISCELLANEOUS
Fevicol (Pidilite Ind. Ltd,
a Adhesive
Araldite,SIKA,Fosroc
ESSAR- CHLORO, DURSBAN, BASF, Bayer
b Anti-termite chemical
premise

C Double sided Adhesive tape Norton, Supreme or 3M

Merino Industries Ltd : TITAN 18MM Box-

UP SERIES, Greenlam Industries Ltd :
e Restroom Cubicles
Green Sturdo Classique - Grandeur Model
or equivalent model of approved make
S.S. Railings 316 grade with 50mm dia tube
f Kich / Rinox / Dorma
Handrail & 38 mm dia tube baluster

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 258

S.S. Railings 316 grade with 50mm dia tube Design Code DS53-2-163 of Kich / Alba of
g
Handrail & SS flat baluster 50mmx10mm Rinox / Dorma
S.S. Railings 316 grade with 50mm dia tube
Handrail fixed on S.S. Solid baluster with
glass holding accessories (including top
Design Code DT2-1-G12 of Kich / Spigot of
h bracket to hold hand railing), along with 12
Rinox / Dorma
mm thick toughened glass connected with
baluster with special glass holding fixtures
/
S.S. Railings 316 grade with 50mm
Handrail fixed with SS 316 Grade Top
bracket glass holding accessories with
i Kich / Rinox / Dorma
12mm thick toughened glass connected
with Top Mounted Aluminum Channel
System
j SS cramps for stone cladding Hc–sf-R SS 316 grade of Hilti , Fisher ,Bosch
Nitobond EP of Fosroc / Sikadur 32LP ofSika
k Bonding Agent
/ Concresive 1414 of BASF
Nitoflor hard top of Fosroc / Chapdur of Sika
l Floor hardner
/ Master top hardner of BASF
Integrated Cleanroom Technologies Pvt. Ltd /
m Clean room
GMP technical services / Fabtec
Aerobrise 450 of Hunter Douglas, COLT, CS
Double Fixed , Double Fin Rectangular (Construction Specialties).
n
Sun Louver System

o Eco Ventilator Sudha ventilator, Citadel, Green curve Chennai

p Tensile Membrane Fabric Ferrari, Mehler, Verseidag

q Galvanized Strands Usha Martin, Bharat wire rope,kinlong

It is the duty of the contractor to get sample approved by the Engineer-in-charge before
procurement of the material. Sample duly approved by Engineer-in-charge shall be kept in
safe custody of contractor and displayed in board properly till completion of the project.
Notwithstanding any interim or final approval the contractor remains responsible for
satisfactory performance of all fittings & fixtures. The liability of the contractor is not limited
by any approval of the make of materials.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 259

Technical Specifications

Plumbing work of DP1 Buildings (Academic Buildings, Access Corridor)

& Ancilliary Buildings

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 260

Scope of Work
The specifications given below pertain to the Internal water supply & Sanitary
installations and External Services like Sewerage, Drainage around the building etc to
be carried in the following buildings.

 Engineering Department - (G+5) (2 Blocks)

 Science Department - (G+3) (2 Blocks)
 Central Instrumentation Facility (G+2)
 Central Prototype Facility (G+2)
 60+135 capacity Lecture Hall (G+1)
 300capacity Lecture Hall (G+1)
 500capacity Lecture Hall (G+1)
 Library and Data Centre( G+4) & Observatory( G+10)
 Access Corridor (G+1)
 Ancillary buildings i.e Water Treatment Plant, Underground Tank & Pump
room, Electrical Sub Stations & Plant room(Academic Area), Electric
substations(4 No.), Main receiving Sub Station, Sewage Treatment Plant, Meter
room, Security complex, Security cabins and watch towers and Telephone
Exchange building.

SECTION – I
1.1 Work under this contract shall consist of furnishing all labour, materials, equipment and
appliances necessary and required to completely furnish all the Plumbing and other
specialized services as described hereinafter and as specified in the Indicative list of items
and/or shown on the Plumbing Drawings.

1.2 Without restricting to the generality of the foregoing Sanitary installations shall include the
following:

a) Sanitary Fixtures & CP Fittings including lab fittings etc. as per the GRIHA requirements.
b) Drinking water fountain near drinking water point.
c) Soil, Waste and Rain Water Pipes.
d) Internal and External Water Supply System i/c BMS enabled Flow meter
e) Terrace booster pump for lecture blocks (300 & 500 capacity)
f) Domestic water distribution system from master plan tapping point to building OHT.
g) Recycled water distribution system from from master plan tapping point to building
OHT.
h) Water meter on the rising main of water supply system for each block.
i) Internal and External Sewerage and Storm water drainage system with excavation of
pipe around the buildings.
j) Neutralization chamber for treatment of Lab waste.

In case of Non DSR Items details of specifications is separately mentioned but wherever specification
not provided, Item should be executed as per DSR 2018 & Specification of CPWD (Latest with up to
date correction slips).
All Concrete (PCC/RCC etc.) works shall be done with OPC 43 grade cement and for all other works,
PPC cement shall be used.
SECTION – II

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 261

1. GENERAL INSTRUCTIONS

1.1 All works specified in the tender have to be executed in accordance with:

a) The latest DSR & guidelines of CPWD specifications as maximum wherever possible.

b) The rules and regulations of Local Authority Having Jurisdiction, and as per the statutory
regulations applicable.

c) Applicable norms to be laid down by the relevant sections of latest editions of National
Building Code (NBC) and all relevant codes of Bureau of Indian Standards (B.I.S.) shall be
followed as applicable.

d) The codes of the Uniform Plumbing Code of India and relevant British Standards shall be used
as a general guide for good engineering practice, design and workmanship norms.

1.2 All materials used in the works shall have Bureau of Indian Standards valid certification
stamped, marked or cast on the material in an acceptable and approved manner, as specified
hereinafter.

1.3 It is the contractor's responsibility to ensure the competence of design to meet the above
requirements.

1.4 Drawings issued with the tenders are schematic and indicate the concept. Contractor shall
make his shop drawings on basis of Architectural and Interior design drawings issued by the
Engineer-in-Charge. Work will be executed only as per approved shop drawings.

1.5 Contractors shall furnish detailed Shop drawings, hydraulic and other design calculations for
approval.

1.6 Work under this contract shall be carried out strictly in accordance with Specifications
attached with the tender.

1.7 The work shall be carried out strictly as specified in Indicative list of items, Technical
Specifications and drawings.

2. LICENSE AND PERMITS

2.1 Contractor must hold a valid Plumbing license issued by the Municipal Authority or other
competent authority under whose jurisdiction the work falls.

2.2 Contractor shall obtain, from the local authorities all related completion certificates with
respect to his work as required for occupation of the building.

2.3 No additional charges and official payment shall be payable to the contractor on getting NOC
/ completion certificate/Inspection fees all included in scope of work.

3. METRIC CONVERSION

3.1 All dimensions and sizes of materials and equipment given in the tender document are
commercial metric sizes.

3.2 Any weights, or sizes given in the tender having changed due to metric conversion, the
nearest equivalent sizes accepted by Indian Standards shall be acceptable without any
additional cost.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 262

4. REFERENCE POINTS

4.1 Contractor shall provide permanent Bench Marks, Flag Tops and other reference points for
the proper execution of work and these shall be preserved till the end of the work.

4.2 All such reference points shall be in relation to the levels and locations given in the
Architectural and Plumbing drawings.

5. DRAWINGS ISSUED TO CONTRACTOR

5.1 Service drawings are diagrammatic but shall be followed as closely as actual construction
permits. Any deviations made shall be in conformity with the Architectural and other
services drawings.

5.2 Architectural drawings shall take precedence over Plumbing or other services drawings as to
all dimensions.

5.3 Contractor shall verify all dimensions at site and bring to the notice of the Architects, all
discrepancies or deviations noticed. Architects decision shall be final.

5.4 Large size details and manufacturers dimensions for materials to be incorporated shall take
precedence over small-scale drawings.

5.5 All drawings supplied with the tender shall be returned in good conditions along with the
tender.

5.6 The Contractor shall maintain one set of all drawings issued to him as reference drawings.
These shall not be used on site.
All corrections, deviations and changes made on the site shall be shown on these reference
drawings for final incorporation in the completion drawings.

6. SHOP DRAWINGS

Shop drawings submitted by the contractor have to be approved for their design,
functionality and structural stability by IIT Bhilai/ Consultant. So contractor should submit
shop drawing well in advance so that work progress doesn’t get suffered. The Contractor shall
submit to the Engineer in charge Shop Drawings for Plumbing works as an Advance Copy to
the Engineer-in-Charge for approval before start of work. Subsequent to the approval of the
shop drawings, the Contractor shall submit Shop Drawings for execution to the Engineer-in-
Charge. The Contractor shall also submit four copies of the Technical Specifications and
Catalogues for all items.

6.1 All Sanitary Engineering drawings issued to the Contractor shall be studied by them.
Contractor shall also obtain the necessary architectural, structural and other services
drawings, based on which they shall prepare their shop drawings as per site conditions.

6.2 Shop drawings shall incorporate the following:

 All proposed Structural supports/hanging/laying and jointing details for all types of pipes as
required.

 Typical details for Toilets & Fixtures required.

 Plumbing layout plans as required and for any changes in the layout of Plumbing/
Architectural Drawings.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 263

 Equipment & piping layout for Mechanical and Electrical equipment’s as required, SLDs,
mounting details of circuit breakers, location of panels, installation of terminals and faucets
etc. w.r.t. finishes, surrounding levels & locations.

 Manufacturer’s and Contractor’s fabrication drawings.

6.3 The Contractor can only commence the work after the approval of above documents by
Engineer in charge.

6.4 Contractors shall ensure that the Shop drawings are approved by the Engineer-In-Charge in
charge prior to any execution.

7. COMPLETION DRAWINGS & DOCUMENTS

7.1 On completion of work contractor shall submit one complete set of original tracings and two
prints of “As Built” drawings for the Engineer-In-Charge. These drawings shall have the
following information.

a) Run of all pipes with diameters and length on all floors and vertical stacks.

b) Ground and Invert levels of all Plumbing services pipes.

c) Location of all valves.

d) Location of all Mechanical equipment with layout and piping connection.

7.2 All “Warranty / Guarantee” cards / certificates in original issued by the manufacturers shall
be handed over to the Engineer-In-charge also in the form of a comprehensive record book /
documents.

8. MATERIALS (SUPPLIED BY THE CONTRACTOR)

8.1 All materials used in the works shall conform to the tender specifications.

8.2 As far as possible all materials shall be bearing I.S. certification marks as per approval of the
Engineer-In-Charge.

8.3 All materials shall bear the necessary certification marks, conforming to the Tender
Specifications / Drawings requirements.

8.4 Unless otherwise specified and expressly approved in writing by the Engineer-In-Charge,
materials of makes and specifications mentioned with tender shall be used.

9. INSPECTION AND TESTING OF MATERIALS

9.1 All materials before being allowed to be brought into the site/store will be preliminary /
visually inspected at the entry gate of the project site by contractor quality control team. All
materials at site/store room shall be regularly inspected by the Jen/Aen of CPWD as per
quality control plan.

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9.2 Contractor shall be required, if requested, to produce manufacturers Test Certificate for the
particular batch of materials supplied to him. The tests carried out shall be as per the relevant
Indian Standards.

9.3 For examination and testing of materials and works at the site Contractor can be asked to
provide Testing and Gauging Equipment necessary but not limited to the followings:-

a) Theodolite
b) Dumpy level
c) Steel tapes
d) Weighing machine
e) Plumb bobs, Spirit levels, Hammers
f) Micrometers
g) Thermometers, Stoves
h) Hydraulic test machine
i) Smoke test machine

9.4 All such equipment shall be tested for calibration at any approved laboratory, and the test
and calibration certificate shall be submitted to the Engineer-In-Charge / Owner.

9.5 All Testing Equipment shall be preferably located in special room meant for the purpose.

10. MATERIALS SUPPLIED BY THE OWNER

10.1 The Contractor shall verify that all materials supplied by the Owner conform to the
specifications of the relevant item in the tender. Any discrepancy found shall be brought to
the notice of the Engineer-In-Charge.

10.2 After receipt of materials, it shall be the responsibility of the Contractor for any damage found
and he shall be liable to pay the actual cost of the material as per market rate at that time.

11. RECOVERY OF COST FOR MATERIALS ISSUED TO CONTRACTORS FREE OF COST

If any materials issued to the Contractor, free of cost, are damaged or pilfered, the cost of the
same shall be recovered from the Contractor on the basis of actual cost to the Owner which
shall include all freight and transportation, excise duty, sales tax, octroi, import duty etc. or
the actual cost given by the Owner shall be final and binding on the Contractor.

12. CONTRACTORS RATES

12.1 Rates quoted in this tender shall be inclusive of cost of materials, labor, supervision, erection,
tools, plant, scaffolding, service connections, transport to site, taxes, octroi and levies,
breakage, wastage, sales tax on works contract and all such expenses as may be necessary
and required to completely do all the items of work and put them in a working condition.

12.2 Rates quoted are for all heights and depths required for this work.

12.3 All rates quoted must be for complete items inclusive of all such accessories, Fixtures and
fixing arrangements, nuts, bolts, hangers as are a standard part of the particular item except
where specially mentioned otherwise.

12.4 All rates quoted are inclusive of cutting holes and chases in walls and floors and making good
the same with cement mortar/concrete of appropriate mix and strength as directed by
Engineer-In-Charge. Contractor shall provide holes, sleeves and recesses in the concrete and
masonry work as the work proceeds.
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12.5 Rates quoted shall be inclusive of cost incurred in testing, commissioning of works and
materials.

13. MOCK UP AND TRIAL ASSEMBLY

The installation of Sanitary Fixtures and fittings shall be as per the shop drawings approved
by Architect / Engineer in charge.

The Contractor shall have to assemble at least one set of each type of Sanitary Fixtures and
Fittings in order to determine precisely the required supply and disposal connections.
Relevant instructions from manufacturers shall be followed as applicable. This trial assembly
shall be developed to determine the location of puncture holes, holding devices etc, which
will be required for final installation of all Sanitary fixtures and fittings. The above assembly
shall be subject to final approval by the Architect / interior designers.

The Fixtures in the trial assembly can be reused for final installation without any additional
payments for fixing or dismantling of the fixtures.

14. EXECUTION OF WORK

14.1 The work shall be carried out in conformity with the Plumbing drawings and within the
requirements of Architectural, HVAC, Electrical, Structural / Green Building Engineer in
charge and other specialized services drawings.

14.2 The Contractor shall cooperate with all trades and agencies working on the site. He shall
make provision for hangers, sleeves, structural openings and other requirements well in
advance to prevent hold up of progress of the construction programme.

14.3. On award of the work, Contractor shall submit a programme of construction in the form of a
Pert Chart or Bar Chart for approval of the Engineer-In-Charge / Owner. All dates and time
schedule agreed upon should be strictly adhered to, within the stipulated time of
completion/commissioning along with the specified phasing, if any.

14.4 Contractor shall be responsible for co-ordination with other agencies working on the project
relating to their scope of work and shall take approval from the Engineer-In-Charge / Owner
wherever required.

14.5 Cutting & Making Good

No structural member shall be chased or cut without the written permission of the Engineer-
In-Charge.

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15. TESTING

15.1 Piping and drainage works shall be tested as specified under the relevant clauses of the
specifications.

15.2 All Tests shall be performed in the presence of the CPWD Field staff i.e Jen/Aen.

15.3 All materials and equipment found defective shall be replaced and whole work tested to meet
the requirements of the specifications.

15.4 Contractor shall perform all such tests as may be necessary and required by the local
authorities to meet Municipal or other by-laws in force.

15.5 Contractor shall provide all labour, equipment and materials for the performance of the tests.

15.6 All appliances, fixtures and fittings shall be tested before and after installation. Water seals of
all appliances shall be tested. The Contractor shall block the ends of waste and ventilation
pipes and shall conduct air test.

16. SITE CLEARANCE AND CLEANUP

16.1 The Contractor shall, from time to time clear away all debris and excess materials
accumulated at the site.

16.2 After the Fixtures, equipment and appliances have been installed and commissioned,
Contractor shall clean-up the same and remove all plaster, paints stains, stickers and other
foreign matter of discoloration leaving the same in a ready to use condition.

16.3 On completion of all works, Contractor shall demolish all stores, remove all surplus materials
and leave the site in a broom clean condition, failing which the same shall be done at
Contractors risk and cost.

17. FINAL INSTALLATION

The Contractor shall install all Sanitary fixtures and fittings in their final position in
accordance with the approved trial assemblies and as shown on the Drawings. The
installation shall be complete with all supply and waste connections. The connection between
building and piping system and the sanitary fixtures shall be through proper unions and
flanges to facilitate removal / replacement of Sanitary Fixtures without disturbing the built
in piping system. All unions and flanges shall match in appearance with other exposed fittings.
Fixtures shall be mounted rigid, plumb and true to alignment. The outlet of water closet pans
and similar appliances shall be examined to ensure that outlet ends are butting and the
receiving pipes before making the joint. It shall be ensured that the receiving pipes are clear
of obstruction. When Fixtures are being mounted, attention shall be paid to the possibility of
movement and settlement by other causes. Overflows shall be made to ensure that necessary
anchoring devices have been provided for supporting water closets, wash basins, sinks and
other appliances.

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18. PROTECTION AGAINST DAMAGE

The Contractor shall take every precaution to protect all Sanitary fixtures against damage,
misuse, cracking, staining, breakage and pilferage by providing proper wrapping and locking
arrangement till the completion of the installation and handling over. At the time of handling
over, the Contractor shall clean, disinfect and polish all the fixtures and fittings. Any Fixtures
found damped, cracked, clipped, strained or scratched shall be removed and new fixtures and
fittings free from defects shall be installed at his own cost to complete the work.

19. GUARANTEE / WARRANTY

19.1 The contractor shall submit a warranty for all equipment, materials and accessories supplied
by him against manufacturing defects, malfunctioning or under capacity functioning.

19.2 The warranty shall expressly include replacement of all defective or under capacity
equipment. Engineer-in-charge may allow repair of certain equipment if the same is found to
meet the requirement for efficient functioning of the system.

19.3 The warranty shall include replacement of any equipment found to have capacity lesser than
the rated capacity as accepted in the contract. The replacement equipment shall be approved
by the Engineer-in-charge.

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SECTION - III SANITARY FIXTURES

1. SCOPE OF WORK

1.1 The work in general shall be carried out as per CPWD Specifications-2009 Volume-I to II with
up to date correction slips.

1.2 The rules and regulations of Local Authority Having Jurisdiction, and as per the statutory
regulations applicable.

1.3 The codes of the latest National building code, Uniform Plumbing Code of India and relevant
British Standards shall be used as a general guide for good engineering practice, design and
workmanship norms.

1.4 Work under this section shall consist of furnishing all Material and labour as necessary and
required to completely install all Sanitary Fixtures, brass and chromium plated fittings and
accessories as required by the drawings and specified hereinafter or given in the Indicative
list of item.

1.5 Without restricting to the generally of the foregoing the Sanitary Fixtures shall include all
Sanitary Fixtures, C.P. fittings and Accessories etc. necessary and required for the Building.

1.6 Sanitary fixtures and Fitting shall be as per the GRIHA requirements.

1.7 Whether specifically mentioned or not all Fixtures and appliances shall be provided with all
fixing devices, nuts, bolts, screws, hangers as required.

2. GENERAL REQUIREMENTS

2.1 All Fixtures and fittings shall be provided with all such accessories as are required to
complete the item in working condition whether specifically mentioned or not in the
Indicative list of item, Specifications and Drawings.

2.2 All Fixtures and accessories shall be fixed in accordance with a set pattern matching the tiles
or interior finish as per Architectural/ Interior designer’s requirements. Wherever necessary
the fittings shall be centered to dimensions and pattern desired.

2.3 Fixing screws shall be half round head Chromium Plated brass with C.P. washers wherever
required as per directions of Engineer-in-Charge.

a) All Fittings and Fixtures shall be fixed in a neat workmanlike manner true to Levels and
Heights shown on the drawings and in accordance with the manufacturer’s
recommendations. Care shall be taken to fix all Inlet and Outlet Pipes at correct positions.
Faulty locations shall be good made and any damage to the finished floor, tiling or terrace
shall be made good at Contractors cost.

b) When directed, Contractor shall install Fixtures and accessories in a mock-up room for the
approval of the Engineer-in-Charge/Owner. Sample room Fixtures may be reused on the
works if undamaged, but no additional payment for fixing or dismantling shall be admissible.

3.1. EUROPEAN W.C.

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3.1.1 European W.C. shall be wash down, single or double siphonic type, wall mounted set, flushed
by means of exposed or concealed type flushing cistern, as specified in Indicative list of item.
Flush pipe/bend shall be connected to the W.C. by means of suitable rubber adapter. Wall
hung W.C. shall be supported by C.I. floor mounted chair/bolts as per approval.

3.1.2 Each W.C. seat shall be so fixed that it remains absolutely stationary in vertical position
without falling down on the W.C.

3.1.3 The edge between fixtures and wall shall be sealed with approved type of poly sulphide
sealant.

3.2 INDIAN W.C.

3.2.1 Indian W.C. pan shall be Orissa pattern of size as specified in the Indicative list of item. Each
W.C. shall be provided with a 100 mm dia cast iron or porcelain P or S trap with or without
vent horn.

3.2.2 W.C. shall be flushed by means of an exposed or concealed type cistern or as specified in
Indicative list of item.

3.2.3 The W.C. shall be fixed in level in a neat workmanlike manner. The W.C. and trap shall be set
in cement concrete 1:2:4 mix (1 cement: 2 coarse sand: 4 stone aggregate 20 mm nominal
size) joints between W.C. and flush pipe shall be made with a putty or other means and linseed
oil and caulked well or with an approved rubber joint.

4. URINALS

4.1 URINALS WITH WATER FLUSH

4.1.1 Urinals shall be white glazed Vitreous China flat back half stall or lip type as specified in
Indicative list of item.

4.1.2 Half stall Urinals shall be provided with 15 mm dia C.P. spreader, 32 mm dia C.P. domical
waste and C.P. cast brass bottle trap with pipe and wall flange, and shall be fixed to wall by
one C.I. bracket and two C.I. wall clips as recommended by manufacturers complete and as
directed by Engineer-in-Charge/Owner.

4.1.3 Half stall urinals shall be fixed with C.P. Brass screws and shall be provided with 32 mm dia
Domical Waste leading to Urinal trap.

4.1.4 Urinals shall be flushed by means of automatically sensor operated flushing system as
specified in Indicative list of item.

4.2 WATER LESS URINAL

4.2.1 Urinals shall be white glazed Vitreous China flat back half stall type as specified in Indicative
list of item.

4.2.2 Half stall Urinals shall be provided with 15 mm dia C.P. spreader, 32 mm dia C.P. domical
waste with pipe and wall flange, and shall be fixed to wall by one C.I. bracket and two C.I. wall
clips as recommended by manufacturers complete and as directed by Engineer-in-Charge
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 270

4.2.3 Half stall urinals shall be fixed with C.P. Brass screws and shall be provided with 32 mm dia
Domical Waste leading to Urinal trap.

4.2.4 Urinals shall be flushed by liquid as specified in Indicative list of item.

5. SINKS

5.1 Sinks shall be of precast Terrazzo marble or White Glazed fire clay or vitreous china or
stainless steel or any other material as specified in the Indicative list of item.

5.2 Each sink shall be provided with R.S. or C.I. brackets and clips and securely fixed. Counter top
sinks shall be fixed with suitable angle iron clips or brackets as recommended by the
manufacturer. Fixing shall be done as directed by Engineer-in-Charge.

6.0 WASH BASIN

6.1 Wash Basins shall be white glazed vitreous chinaware of size, shape and type as specified in
the Indicative list of item.

6.2 Each Basin shall be provided with R.S. or C.I. brackets duly painted. The clips and the basin
securely fixed to wall and have accessories as mentioned in the Indicative list of item. The MS
angle shall be provided with two coats of red oxide primer and two coats of synthetic enamel
paint of make, brand and colour as approved by the Architect/Consultants.

6.3 Each basin shall be provided with 32 mm dia. C.P. waste of standard pattern with pop-up
waste or rubber plug and chain as specified in the detailed engineering, PDR and system
requirement, 32 mm dia. C.P. brass bottle trap and angle valve with C.P. pipe to wall and flange
as given in the Indicative list of items.

6.4 Each basin shall be provided with auto closing pillar cock or as specified in the Indicative list
of items.

6.5 Basins shall be fixed at proper heights as shown on drawings. If height is not specified, the
rim level shall be 79 cm or as directed by EIC.

7. ACCESSORIES

7.1 Contractor shall install all Chromium Plated and porcelain accessories as shown on the
drawings or directed by Engineer-in-Charge and given in the Indicative list of item.

7.2 All C.P. Accessories shall be fixed with C.P. brass half round head screws and cup washers in
wall with raw plugs or nylon sleeves and shall include cutting and making good as required
or directed by Engineer-in-Charge/Owner.

7.3 Porcelain accessories shall be fixed in walls and set in cement mortar 1:2 (1 cement: 2 coarse
sand) and fixed in relation to the tiling work.

8. URINAL PARTITIONS

8.1 Urinal partitions shall be of granite as specified in the Indicative list of item and granite.

9. EWC PAN CONNECTOR

The EWC pan connector shall be Flexible, soft and shall be made of single body construction
with integral fins. The pan connector must be supplied with factory fitted spring loaded seal
guard.

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While fixing of the pan connector with the Soil pipe, the pipe must be reasonably clean and
smooth on the inner surface; in case the soil piping is in C.I. then supplier supplied bush /
adaptor shall be used. The connector socket is pushed fully home onto the pan spigot,
thereafter the WC is placed in position gently pushing the fitment to ensure that the connector
end fits into the Spigot of the pipe. The pan connector must be pushed in such a easy as to
ensure that the seals and fins turn inward to ensure proper sealing.

10. Hand Drier:

10.1 The hand drier shall be no touch operating type with solid state time delay to allow user to
keep hand in any position.

10.2 The hand drier shall be fully hygienic, rated for continuous repeat use (CRU).

10.3 The rating of hand drier shall be such that time required to dry a pair of hands up to wrists is
approximately 30 seconds.

10.4 The hand drier shall be of wall mounting type suitable for 230V, single phase, 50 Hz, AC power
supply.

11. Toilets for Disabled:

11.1 Where specified in washroom facilities designed to accommodate physically handicapped,

accessories should be provided as directed by the Engineer-in-Charge.

11.2.1 Stainless steel grab bars of required size suitable for concealed or exposed mounting and non-
slip gripping surface shall be provided in all washrooms to be used by physically handicapped
as directed by the Engineer-in-Charge.

12.0 Drinking water fountain

Drinking water fountain need to be installed by the bidder as shown in the Architectural
drawing of wall hanging type made up of stainless steel top and heavy duty galvanized steel
frame. ADA Compliant, size 472 mm Depth X 447mm width, flexible bubbler guard , operated
between 50 to 120 PSI, complete with all accessories which include MD-CU29, which is an
EPA registered antimicrobial copper that fights off microorganisms which include MRSA and
e-coli on push pad. The water Fountain shall certified by NSF-USA, Green building, TUN, UL
complete in all respect as per the direction of Engineer in charge

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SECTION - IV SOIL, WASTE & VENT PIPES

1. SCOPE OF WORK

1.1 Work under this section shall consist of furnishing all labour, materials, equipments and
appliances necessary and required to completely install all soil, waste, vent and rainwater
pipes as required by the drawings, specified hereinafter and given in the Indicative list of
item.

1.2 Without restricting to the generally of the foregoing, the soil, waste, vent and rainwater
pipes system shall include the followings:

a) Vertical and horizontal Soil, Waste and Vent Pipes, Rainwater Pipes and Fittings, Joints
supports and clamps and connections to Fixtures.

b) Connection of pipes to Gully Traps & Manholes etc.

2. GENERAL REQUIREMENTS

2.1 All materials shall be new of the best quality conforming to specifications and subject to the
approval of Engineer-in-Charge.

2.2 Pipes and fittings shall be fixed truly vertical, horizontal or in slopes as required in a neat
workmanlike manner.

2.3 Pipes shall be fixed in a manner as to provide easy accessibility for repair and maintenance
and shall not cause obstruction in shafts, passages etc.

2.4 Access doors for fittings and cleanouts shall be so located that they are easily accessible for
repair and maintenance.

2.5 All works shall be executed as directed by Engineer-in-Charge.

3. CAST IRON PIPES & FITTINGS (IS: 15905)

3.1 Pipes & Fittings

All pipes & fittings shall be straight and smooth and inside free from irregular bore,
blowholes, cracks and other manufacturing defects & shall confirm to the specifications as
per IS:15905 for Hubless Cast iron soil, waste & ventilating pipes fittings & accessories,
complete in all respects & as specified in the relevant item of the Indicative list of items.

3.2 Other Fittings

a) Other casted CI Fittings used for drainage pipes shall confirm to the required specifications
& as per site conditions & wherever possible to the relevant IS code.

3.3 Fixing

 All vertical pipes shall be fixed by structural support or clamp truly vertical as decided by
Engineer in charge. Branch pipes shall be connected to the stack at the same angle as that
of the fittings. Each stack shall be terminated at top with a Cowl (terminal guard).

 Horizontal pipes running along ceiling shall be fixed on structural support adjustable
clamps of special design shown on the drawings or as directed. Horizontal pipes shall be

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laid to uniform slope and the clamps adjusted to the proper levels so that the pipes fully rest
on them.

 Contractor shall provide all sleeves, openings, hangers, inserts during the construction. He
shall provide all necessary information to the building Contractor for making such
provisions in the structure as necessary. All damages shall be made good to restore the
surface.

3.4 Jointing

CI pipes shall be jointed with EPDM rubber gasket with SS 304 coupling of approved make
only.

4. PP MATERIALS LOW NOISE LEVEL FOR LAB WATSE PIPES

The PP Materials based Pipe is a sound-absorbing, hot water resistant pipe system that is
suitable for all pressure less sewage pipes according to DIN EN 12056 and DIN 1986-100.
The pipes and molded parts are made of PP-M (mineral reinforced Polypropylene), so that
general sound protection is guaranteed from the extraction positions to the manifold. PP
can be delivered in the DN 50 to DN 200 dimensions with the density of 1.9 gm/cm3. The
pipe has long life, and like all plastic materials, it is corrosion-resistant and resistant to
aggressive effluents. No crust formation takes place due to the smooth surface. The lesser
weight in comparison with metallic pipes and the quick, safe plug in fittings of the system
make it easy to lay.

The pipe is resistant to hot water and fulfils the requirements of DIN 1986, which means
95ºC short term and 90ºC long term temperature loading. The pipe can be used for the
drainage of wastewater between pH 2 and pH 12, eg in professional kitchens up to the house
connection duct .

5. UPVC PIPES (I.S. 4985) FOR RAIN WATER

5.1 6 kg/cm2 Class selection shall be as per Indicative list of items.

All fittings for uPVC pipes up to 200 mm O.D. size shall be injections moulded as per
manufacturer, confirming to IS: 4985 and as specified in Indicative list of items.

5.2 For Fittings of sizes which are not injection moulded but fabricated (Locally/ Imported)
sample of the same shall be submitted for approval.

6. CLAMPS / STRUCTURAL SUPPORTS

6.1 G.I. clamps shall be of standard design and fabricated from M.S. flat 40x3mm thick with
required Galvanization.

6.2 Where G.I. clamps are to be fixed on RCC columns or slotted angles, walls or beam they shall
be fixed with 40x3mm flat iron “U” type clamps with anchor fasteners of approved design
or 6mm nuts and bolts.

6.3 Structural support shall be fabricated from M.S Structural members e.g. rods, angles,
channels flats as per detailed drawing or as directed. Contractor shall provide all nuts, bolts,
welding material and paint the clamps with one coat of red oxide and two or more coats of
black Enamel paint. Wooden saddles, where required shall be provided free of cost.

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 274

6.4 Slotted angle/channel supports on walls shall be provided wherever shown on drawings.
Angles/channels shall be of sizes shown on drawings or specified in indicative list of items,
angles/channels shall be fixed to brick walls with bolts embedded in cement concrete blocks
and to RCC walls with suitable anchor fasteners. The spacing of support bolts horizontally
shall not exceed 1 m.

6.5 Wherever G.I. clamps are required to be anchored directly to brick walls, concrete slabs,
beams or columns, nothing extra shall be payable for clamping arrangement and making
good with cement concrete 1:2:4 mix (1 cement: 2 coarse sand: 4 stone aggregate 20mm
nominal size) as directed by the Engineer-in-Charge / Owner.

7. TRAPS

7.1 Floor traps shall be of CI, deep seal with an effective seal of 50 mm as given in Indicative list
of items. The trap and waste pipes shall be set in cement concrete blocks firmly supported
on the structural floor. The blocks shall be in 1:2:4 mix (1 cement: 2 coarse sand: 4 stone
aggregate 20 mm nominal size) and extended to 40 mm below finished floor level.
Contractor shall provide all necessary shuttering and centering for the blocks. Size of the
block shall be 30x30 cm of the required depth. Where traps are suspended below ceilings,
they shall be provided with proper structural supporting arrangements.

The inside surface of core of trap for bore packing by roughening using suitable file to get
better adhesion prior to packing works. Cleaning the surface by wire brushing followed
water jet to remove any laitance or loose flaky particles. Providing necessary form work for
packing the bore using suitable arrangement (depending upon site conditions). Applying a
coat of styrene- butadiene based polymer coating using Nitobond SBR to enhance adhesion
between the packing material and other surfaces and Application of swellable Supercast
SW20 at the middle of over the pipe external side and. Packing the gap using non-shrink
cement polymer based grout using Conbextra GP2 upto the surface of the bore whilst the
Nitobond SBR is in tacky state completely for 100 mm dia. pipe as per the manufacturer’s
Instruction and as per direction of the engineer-in-charge.

7.2 PP Floor trap

PP Floor trap has unique feature such as an air tight baffle construction and the
incorporation of seals. The trap can be applied directly within the soil & waste system
design.

Important aspects in the designing process are: -

 Knockout prevention
 Seals.
 Absorb/correct installation mistakes
 Durability
 Resistant to difficult installation circumstances

7.3 Urinal Traps

Urinal traps shall be of CI, deep seal with an effective seal of 50 mm as given in Indicative
list of items. and set in cement concrete block specified in Para above without extra charge.

7.4 Floor Trap Inlet

Bath room traps and connections shall ensure free and silent flow of discharging water.
Where specified, Contractor shall provide a special type G.I. inlet hopper without or with
one, two or three inlet sockets to receive the waste pipe. Hopper shall be connected to trap
with at least 50 mm seal (Hopper and traps shall be paid for separately).

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7.3 Floor drain (Reducing elbow)

Reducing elbow shall be provided of GI material of 100X50 mm size for carrying of waste
into floor trap. Provision for 125 mm grating on top shall be made. It shall be fixed into 100-
125 mm sunken area.

7.4 C.P./Stainless Steel Gratings

Floor and Urinal Traps shall be provided with 100-150 mm square or round C.P/Stainless
steel grating, with rim of approved design and shape. Minimum thickness shall be 4-5 mm
or as specified in the Indicative list of item.

8. CLEANOUT PLUGS

Contractor shall provide brass cleanout plugs as required. Cleanout plugs shall be threaded
and provided with key holes for opening. Cleanout plugs shall be fixed to the pipe by a male
threaded adaptor.

9. WASTE PIPE FROM APPLIANCES

9.1 Waste pipe from appliances e.g. wash basins, sinks, urinals, water coolers shall be of G.I.
heavy duty as given in the Indicative list of item or as shown on the drawings.

9.2 All pipes shall be fixed in gradient towards the outfalls of drains. Pipes inside a toilet room
shall be in chase unless otherwise shown on drawings. Where required pipes may be run
at ceiling level in suitable gradient and supported on structural clamps at approved spacing.

10. CEMENT CONCRETE

Soil and Waste pipes under floors in sunken slabs and in wall chases (When cut specially for
the pipe) shall be encased in cement concrete 1:2:4 mix (1 cement: 2 coarse sand: 4 stone
aggregate 20 mm size) 75 mm in bed and all-round. When pipes are running well above the
structural slab, the encased pipes shall be supported with suitable cement concrete pillars
of required height and size at intervals as directed by Engineer-in-Charge/Owner.

11. CUTTING AND MAKING GOOD

Pipes shall be fixed and tested as buildings proceeds. Contractor shall provide all necessary
holes cutouts and chases in structural members as building work proceeds. Wherever holes
are cut or left originally, they shall be made good with cement concrete 1:2:4 (1 cement: 2
coarse sand: 4 stone aggregate 20 mm nominal size) or cement mortar 1:2 (1 cement: 2
coarse sand) and the surface restored as in original condition. Core cutting wherever
necessary is to be done by contractor without any extra cost.

12. Slot Drain near drinking water area

Bidder has to provide and installed the drain of polymer concrete with slot at the top
matching with the tiling plan as per EN standards complete in all respect as per direction of
Engineer in charge.

13. Prefab drain channel

Prefab-fab polymer concrete channels conforming to relevant EN standards with V-shaped
profile, tounge and groove jointing arrangement, in-built ductile iron edge rail, with in-built
slope along the complete length of the channel, and polymer concrete channels to be made
of zero water absorbtion, of density being 2.1 - 2.3gm/cm3, with surface roughness of

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 276

approx 25 μm, with SS grating at the top complete in all respect including all necessary civil
and finishing works as required as per site and the instructions of the engineer - in – charge.

14. INSPECTION & TESTING

14.1 Inspection

Work should be inspected during installation and tests applied on completion, care being
taken that, all work which is to be encased for concealed is tested before it is finally enclosed.

Inspection should be carried out to ensure the following:

a) Work accords with the drawing and specifications.
b) All pipe brackets, clips etc. are securely fixed.
c) Fixtures are correctly spaced.
d) Pipe is protected where necessary by Thermal Insulation.
e) Embedded pipe work is properly protected before sealing-in
f) All access covers, caps or plugs.
 Are accessible
 Are so made that the internal faces truly complete in internal bore.
 Cause no obstruction in the pipe bore
 Are well joined.

14.2 Testing

The soil, waste piping system and rain water should be tested after installation as follows:

(a) Water Test

The pipes shall be tested after installation & before the appliances are connected, preferably
in sections so as to limit the static head of 4.5m. The pipe shall be filled with water for at
least 10 minutes. After filling, pipes shall be struck with a hammer and inspected for blow
holes and cracks. Then it will be necessary to seal all openings and leaks at joints
immediately as observed during the test and all defective pipes shall be rejected and
removed from the site. Pipes with minor sweating shall be accepted at the discretion of the
Engineer-in-Charge.

(b) Smoke Test

Alternatively, the Contractor may test all Soil, Waste and Rainwater stacks by smoke testing
machine. The smoke test shall be carried out as under:

Smoke shall be pumped into the stack after plugging all inlets and connections at the lowest
points from a smoke testing machine which consists of a bellow & burner. The material
usually burnt is greasy cotton waste which gives out a clear pungent smoke which is easily
detected by sight as well as by smell, if there is leak at any points of the pipe. The top end
shall however be left open. The stack shall then be observed for leakiness and all defective
pipes and fittings removed or repaired as directed by the Engineer-in-Charge.

14.3 A test register shall be maintained and all entries shall be signed and dated by Contractors
and CPWD field staff i.e Jen/Aen.

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SECTION – V WATER SUPPLY SYSTEM

1. SCOPE OF WORK

1.1 Work under this section consists of furnishing all labour, materials equipment and appliances
necessary and required to completely install the water supply system as required by the
drawings, specified hereinafter and given in the Indicative list of item.

1.2 Without restricting to the generality of the foregoing, the water supply system shall include
the following:-

a) Internal and External water supply system and making connection from external sources for
all buildings etc.
b) Drinking water supply system
c) Pipe protection and painting.
d) Control valves, masonry chambers and other appurtenances.
e) Connections to all toilets, storage tanks and appliances.
f) Excavation and refilling of pipe trenches, wherever required.
g) Trenches for taking pipe lines for these services.

2. GENERAL REQUIREMENTS

2.1 All materials shall be new of the best quality conforming to specifications. All works executed
shall be to the satisfaction of the Engineer-in-Charge / Owner.

2.2 Pipes and Fittings shall be fixed truly vertical, horizontal or in slopes as required in a neat
workmanlike manner.

2.3 Short or Long bends shall be used on all main pipe lines as far as possible. Use of Elbows shall
be restricted for short connections. As far as possible all Bends shall be formed by means of
a hydraulic pipe bending machine for pipes up to 65mm dia.

2.4 Pipes shall be fixed in a manner so as to provide easy accessibility for repair and maintenance
and shall not cause obstruction in shafts, passages etc.

2.5 Pipes shall be securely fixed to walls and ceilings by suitable clamps at intervals specified.

2.6 Valves and other appurtenances shall be so located as to provide easy accessibility for
operations, maintenance and repairs.

3. G.I. PIPES & FITTINGS

3.1 All pipes inside the buildings and where specified, outside the building shall be galvanized
steel tubes conforming to I.S. 1239-1979 of class B.

3.2 Fittings shall be malleable iron galvanized fittings, of approved make. All fittings shall have
manufacturer’s trade mark stamped on it. Fittings for G.I. pipes shall include Couplings,
Bends, Tees, Reducers, Nipples, Unions, Bushes, Fittings shall be of I.S:1879 - (part I to X)
1975.

3.3 The pipes shall be cleaned and cleared of all foreign matter before being laid. In jointing the
pipes, the inside of the socket and the screwed end of the pipes shall be oiled and rubbed over.
Teflon Tape should be used on threads instead of ‘Dhaaga/ Safeda’. The end shall then be
screwed in the socket, Tee etc. with the pipe wrench. Care shall be taken that all pipes and
fittings are properly jointed so as to make the joints completely water tight and pipes are kept
at all times free from dust and dirt during fixing. Burr from the joint shall be removed after

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 278

screwing. After laying, the open ends of the pipes shall be temporarily plugged to prevent
access of water, soil or any other foreign matter. All pipes shall be fixed in accordance with
layout and alignment shown on the drawings. Care shall be taken to avoid air pockets. G.I.
pipes inside toilets shall be fixed in wall chases well above the floor. No pipes shall be run
inside a sunken floor as far as possible. Pipes may be run under the ceiling or floors and other
as shown on drawings.

4. CPVC PIPES AND FITTINGS

4.1 Description

CPVC piping shall be Fire Proof, Corrosion resistance with smooth, friction free interior
surfaces and with anti - bacterial growth properties.

4.2 JOINING TUBING & FITTINGS

(a) Cutting
CPVC tubing shall be cut with a wheel-type plastic tubing cutter, a hack saw or other fine
toothed hand or power saws. Use of ratchet cutters shall be permitted, provided blades are
sharpened regularly. A milter box should be used to ensure a square cut when using a saw.

(b) Deburring/Beveling
Burrs and fillings can prevent proper contact between tube and fitting during assembly, and
should be removed from the outside and inside of the tubing. A chamfering tool shall be used
for this purpose. A slight bevel on the end of the tubing shall be provided to enable entry of
the tubing into the fitting socket and minimize the chances of pushing solvent cement to the
bottom of the joint.

(c) Fitting Preparation

The surfaces shall be wiped clean of dirt and moisture from the fitting sockets and tubing end.
Check the dry fit of the tubing and fitting. The tubing should make contact with the socket
wall 1/3 to 2/3 of the way into the fitting socket.

(d) Solvent Cement Application

Only approved type Solvent Cement shall used for jointing the CPVC pipes, which shall be
procured as per the manufacturer recommendations. Apply an even coat of Cement Solvent
on the Pipe end after cleaning of whole pipe and also inside the fittings socket. Old or
deteriorated or thickened or Lumpy Solvent Cement shall not be used.

(e) Assembly
Immediately insert the pipe into fitting socket, rotate the pipe ¼ to ½ turn while inserting.
This motion ensures an even distribution of cement within the joint. Properly align the fitting.
Hold the assembly for approximately 10 seconds, allowing the joint to set-up. An even bead
of cement should be evident around the socket edge, it may indicate that sufficient cement
was applied. In this case, remake the joint to avoid potential leaks. Wipe excess cement from
the tubing and fitting surfaces for an attractive, professional appearance.

5. STAINLESS STEEL PIPES FOR DRINKING WATER SYSTEM

The SS pipe for drinking water purposes shall be of grade SS-316 & conforming to EN
10312 standard compete with Press type fittings with SC-Contur in accordance with
international regulation (DVGW - W534) & as per approved makes & specifications,

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complete as per the instructions of Engineer-in-charge & as specified in the Indicative

list of items.

6. CLAMPS

G.I. pipes in shafts and other locations shall be supported by M.S clamps. Pipe in wall chases
shall be anchored by iron hooks. Pipes at ceiling level shall be supported on structural clamps
fabricated from M.S. structural as described in the sub section. Pipes in typical shafts shall be
supported on Slotted Angles/Channels as specified elsewhere.

7. UNIONS

Contractor shall provide adequate number of unions on all pipes to enable dismantling later.
Unions shall be provided near each Valve, Stop Cocks, or Check Valves and on straight runs
as necessary at appropriate locations as required and/or directed by Engineer-in-Charge /
Owner.

8. FLANGES

Flanged connections shall be provided on pipes where shown on the drawings, all equipment
connections as necessary and required or as directed by Engineer-in-Charge / Owner.
Connections shall be made by the correct number and size of the bolts and made with 3 mm
thick insertion rubber washer. Where hot water or steam connections are made insertion
gasket shall be of suitable high temperature grade and quality approved by Engineer-in-
Charge / Owner. Bolt hole dia for flanges shall conform to match the specification for C.I.
Sluice Valve to I.S. 780.

9. TRENCHES

The external water supply pipes below ground shall be laid in trenches. The width and depth
of the trenches for the different diameters of the pipes shall be as follows:

Dia of Pipe Width of Depth of Trench

Trench
15mm to 50mm 30 cms 60 cms
65mm to 150mm 45 cms 75 cms

At joints the trench width shall be widened where necessary. The work of excavation and
refilling shall be done true to line and gradient in accordance with general specifications for
earthwork in trenches.

When excavation is done in rock, it shall be cut deep enough to permit the pipes to be laid on
a cushion of sand minimum 7.5 cm deep.

10. PAINTING ON EXPOSED WATER SUPPLY PIPES

10.1 All surfaces shall be thoroughly cleaned before painting.

10.2 All pipes above ground shall be painted with one coat of primer and two coats of Synthetic
Enamel paint of approved shade and quality. Pipes shall be painted to standard color code
specified by Engineer-in-Charge/Owner.

11. PIPE PROTECTION FOR UNDERGROUND WATER SUPPLY PIPES

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Corrosion protection tape shall be wrapped on GI pipes to be buried in ground. This

corrosion protection tape shall comprise of coal tar/asphalt component supported on fabric
of organic or inorganic fibre and minimum 4 mm. thick and conform to requirement of
IS:10221 - code of practice for coating and wrapping of underground line. Before application
of corrosion protection tape all foreign matter on pipe shall be removed with the help of wire
brush and suitable primer shall be applied over the pipe thereafter. The primer shall be
allowed to dry until the solvent evaporates and the surface becomes tacky. Both primer and
tape shall be furnished by the same manufacturer. Corrosion protection tape shall then be
wound around the pipe in spiral fashion and bounded completely to the pipe. There shall be
no air pocket or bubble beneath the tape. The overlaps shall be 15 mm and 250 mm shall be
left uncoated on either end of pipe to permit installation etc. This area shall be coated insitu
after the pipe line is installed. The tape shall be wrapped in accordance with the
manufacturer’s recommendations. If application is done in cold weather, the surface of the
pipe shall be pre-heated until it is warm to touch and traces of moisture are removed and
then primer shall be applied and allowed to dry.

12 BALL VALVES

The Ball Valve shall be made from forged brass and tested to 16 Kg/cm² pressure. The valve
shall be internally threaded to receive pipe connections. The Ball shall be made from brass
and machined to perfect round shape and subsequently chrome plated. The seat of the valve
body bonnet gasket and gland packing shall be of Teflon. The handle shall be of chrome plated
steel with PVC jacket. The handle shall also indicate the direction of ‘open’ and ‘closed’
situations. The gap between the ball and the Teflon packing shall be sealed to prevent water
seeping upto 14 Kg / cm² pressure. The handle shall also be provided with a lug to keep the
movement of the ball valve within 90 degree.

13. BUTTERFLY VALVES

 The Butterfly Valve shall be suitable for waterworks. The Valves conforming to IS :
13095 shall be provided. All valves shall be suitable to withstand the pressure in the
system and rating shall be PN 1.6. All valves shall be right handed (i.e. handle or key shall
be rotated clock wise to close the valve).

 The direction of opening and closing shall be marked and an open / shut indicator fitted.

 The material of valves shall be as under:-

Body - Cast iron

Disc - Ductile Iron
Seat - EPDM/Nitrile rubber
Shaft - Stainless Steel

 The Valve shall be fitted between two flanges on either side of pipe flanges. The Valve
edge rubber shall be projected outside such that they are wedged within the pipe flanges
to prevent leakages.

 Joints for butterfly valves shall be made with suitable tail /socket pieces on the pipe line
and flanged joints made with 3mm thick insertion rubber gasket with appropriate
number of bolts, nuts and washers.

 Butterfly valves shall be provided on all branches as shown in the drawings or as

specified.

15 Motorized Butterfly valve at the inlet of over head tanks:

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Contractor has to install the IP 67 ( Weather Proof /Aluminium casing with positioner
to indicate the valve position with key type manual overdrive) Motorized Butterfly valve
for filling of over head water tank complete with high and low level float type sensors to
control the valve .The sensors shall be installed in over head tanks. The sensors will close
the valve when water level is high in over head tank and open the valve when over head
water tank level is low . The system should be complete in all respects with control panel
indicating the position of valve i.e open /closed with accessories like wiring /conduiting
/flanges , nut bolts etc complete as per approved type and specifications as per
instructions of the engineer - in - charge.

16. Fittings and Inspection Chambers

Fittings and chambers shall be provided as required.

16.1 Anchor Block

Suitable anchor blocks shall be provided at all bends and tees to encounter the excessive
thrust developed due to water hammer.

16.2 Rubber Joints

Joints between two pipes shall be made by pre-moulded rubber joints with suitable
tackles in a manner recommended & approved by the manufacturer. No joints shall be
covered until the lines are hydraulically tested.

17. VALVE CHAMBERS

17.1 Contractor shall construct chambers for all full way valves, butterfly valves and other
type of valves as specified in the Indicative list of items. These shall be made, in brick
masonry in cement mortar 1:4 (1 cement: 4 coarse sand) on cement concrete
foundations 150mm thick 1:5:10 mix (1 cement: 5 coarse sand: 10 graded stone
aggregate 40mm nominal size) 12 mm thick cement plaster 1:3(1 cement : 3 coarse sand)
inside finished with a floating coat of neat cement with 8mm thick CI surface box with
hinged cover and locking arrangement, 150 mm thick reinforcement cement concrete
top slab of 1:2:4 (1 cement : 2 coarse sand: 4 graded stone aggregate 20mm nominal
size), as specified and shown in drawings, including excavation, back filling rammed and
outside rough plaster of 15mm complete or as specified in Indicative list of items.

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 282

17.2 Valve chambers shall be constructed as specified in indicative list of items but generally
shall be of following sizes:

Length Width Depth

(mm) (mm) (mm)
For pipes dia. up to 50 mm 300 300 500
For pipes dia. 65 to 80 mm 600 600 1000
For pipes dia. 80 mm and 750 750 1000
above

18. TESTING

18.1 All pipes, fittings and valves shall be tested by hydrostatic pressure of min. 1.5 times, the
working pressure and subject to minimum of 7 kg/cm 2 in any case and with the consent
of Engineer-in-Charge.

Pressure shall be maintained for a period of at least two hours without appreciable drop
in the pressure after fixing at site. (+10%). A test register shall be maintained and all
entries shall be signed and dated by Contractor and Jen/Aen of CPWD

18.2 In addition to the sectional testing carried out during the construction, Contractor shall
test the entire installation after connections to the overhead tanks or pumping system or
mains. He shall rectify all leakages, and shall replace all defective materials in the system.
Any damage done due to carelessness, open or burst pipes or failure of fittings, to the
building, furniture and Fixtures shall be made good during the defects liability period
without any extra cost.

18.3 After completion of the water supply system, Contractor shall test each valve by closing
and opening it a number of times to observe if it is working efficiently. Valves which do
not effectively operate shall be replaced by new ones at no extra cost and the same shall
be tested as above.

19. DISINFECTION

19.1 After completion of the work Contractor shall flush clean the entire system with the city’s
filtered water after connection has been made.

19.2 After the first flushing, commercial bleaching powder is to be added to achieve a dosage
of 2 to 3 mg/l of water in the system added and flushed. This operation should be
performed twice to ensure that the system is fully disinfected and usable.

20. PRE COMMISSIONING

20.1 Ensure that all pipes are free from debris and obstructions.

20.2 Check all valves for effective opening and closing action. Defects should be rectified or
valves replaced.

20.3 Ensure that all Connections to Branches have been made.

20.4 Ensure that mains have been connected to the respective pumps, underground and
overhead tanks.

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 283

20.5 Water supply should be available at main Underground tank.

20.6 All main line Valves should be closed.

21. COMMISSIONING

21.1 Fill Underground tank with water. Add 1kg fresh bleaching powder after making a
solution to be added near inlet.

21.2 Start Water Supply Pump and allow water to fill main Underground tank. Water will first
fill the fire tank and then overflow to the Raw Water tanks.

21.3 After filling Overhead Reservoir drain the same to its one forth capacity through tank
scour valve. (This is to ensure removal of all mud, debris etc. from the tank).

21.4 Fill Overhead tank to full.

21.5 Release water in the main lines by opening Valves in each circuit. Drain out water in the
system through scour valves or fire hydrant in lower regions. Ensure clean water is now
coming out of the system.

21.6 Open valves for individual clusters. Observe for leakages or malfunctions, check
pressure & flow at end of line by opening Hydrants etc. Remove and rectify defects
noticed.

21.7 Check all outlet points for proper operation by opening each valve and allowing water to
flow for a few minutes. Also check for effective closure of valve.

21.8 The entire water supply system should be disinfected with bleaching powder and system
flush cleaned.

21.9 Send four samples of water drawn from four extreme locations for testing for
bacteriological test in sterilized bottles obtained from the concerned laboratory.
(Laboratory personal may collect the samples themselves).

22. RESPONSIBILITY

Responsibility for various activities in pre-commissioning and commissioning procedures

will rest with the Contractor.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 284

SECTION – VI SEWERAGE / DRAINAGE SYSTEM AROUND THE BUILDINGS

1. SCOPE OF WORK

1.1 Work under this section shall consist of furnishing all Labour, Materials, Equipments and
Appliances necessary and required to completely finish Sewerage/Drainage system as
required by the drawings and specified hereinafter or given in the Indicative list of item.

1.2 Without restricting to the generality of the foregoing, the sewerage system shall include:

 Installation of all sewer lines / effluent lines around the buildings.

 Installation of all storm water drainage lines around the buildings
 Construction of all catch basins, chambers, manholes & other related civil works etc. around
the buildings

2. GENERAL REQUIREMENTS

2.1 All materials shall be new of the best quality conforming to specifications and subject to the
approval of the Engineer-in-Charge.

2.2 Drainage lines shall be laid to the required gradients and profiles.

2.3 All drainage work shall be done in accordance with the local Municipal bye laws.

2.4 Location of all manholes, catch basins etc., shall be got confirmed by the Contractor from the
Engineer-in-Charge before the actual execution of work at site.

3. ALIGNMENT AND GRADE

The sewer pipes shall be laid to alignment and gradient shown on the drawings but subject
to such modifications as shall be ordered by the Engineer-in-Charge / Owner from time to
time to meet the requirements of the works. Drawings are only indicative in nature,
Contractor to submit shop drawing before execution of work.

4. DWC PIPES FOR SEWERAGE LINE

4.1 DWC Pipes shall confirm IS 16098 (Part-2) and of SN8 class, have a smooth internal surface
and corrugated external surface. The corrugated external surface provides greater stiffness,
withstands soil movement & takes higher loads (static & dynamic), whereas the internal
surface helps in smooth flow of sewerage. DWC Pipes are manufactured using HDPE polymer.
These pipes are resistant to various types of gases & chemicals which are generated due to
purification of various ingredients flowing in the system.

4.2 All the pipes shall be jointed Socket & Spigot joint with elastomeric sealing ring.

5. GULLY TRAPS

5.1 Gully traps shall conform to IS 651. These shall be sound, free from visible defects
such as fire cracks, or hair cracks. The glaze of the traps shall be free form crazing.
They shall give a sharp clear tone when struck with light hammer. There shall be no broken
blisters.

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 285

6. REINFORCED CEMENT CONCRETE PIPES FOR STORM WATER SYSTEM

6.1 All underground storm water drainage pipes where specified (other than those specified cast
iron) shall be centrifugally spun RCC pipes of NP-2 class. Pipes shall be true and straight with
uniform bore. Throughout cracked, warped pipes shall not be used on the work. All pipes
shall be tested by the manufacturer and the Contractor shall produce, when directed a
certificate to that effect from the manufacturer.

6.2 Laying
R.C.C. spun pipes shall be paid on cement concrete bed or cradles as specified and shown on
the detailed drawings the cradles may be precast and sufficiently cured to prevent cracks and
breakage in handling. The invert of the cradles shall be left 12mm below the invert level of
the pipe properly placed on the soil to prevent any disturbance. The pipe shall than be placed
on the bed concrete or cradles and set for the line and gradient by means of sight rails and
bonding rods etc. cradles or concrete bed may be omitted, if directed by the Engineer-in-
Charge

6.3 Jointing
After setting out the pipes the collars shall be centered over the joint and filled in with tarred
gaskin, so that sufficient space is left on either side of the collar to receive the mortar. The
space shall then be filled with cement mortar 1:2 (1 cement: 2 fine sand) and caulked by
means of proper tools all joints shall be finished at an angle of 45 degree to the longitudinal
axis of the pipe on both side of the collars neatly.

7. TESTING

All lengths of the sewer and drain shall be fully tested for water tightness by means of water
pressure maintained for not less than 30 minutes. Testing shall be carried out from manhole.
All pipes shall be subjected to a test pressure of at least 1.5 meter head of water. The test
pressure shall, however, not exceed 1.5 meter head at any point. The pipes shall be plugged
preferably with standard design rubber plugs on both ends. The upper end shall, however,
be connected to a pipe for filling with water and getting the required head. The tolerance
figure of two liters per centimeter of dia per kilometer may be allowed during a period of ten
minutes. Subsidence of the test water may be due to one or more of the following causes:

 Absorption by pipes and joints

 Sweating of pipe or joints
 Leakage at joints or from defective pipes

(a) Trapped Air

Allowance shall be made for (i) by adding water until absorption has ceased after which the
test proper should commence. Any leakage will be visible and the defective part of the work
should be cut out and made good. A slight amount of sweating which is uniform may be
overlooked, but excessive sweating from a particular pipe or joint shall be watched for and
taken as indicating a defect to be made good.

(b) Sewer and Drain Pipelines shall be tested for straightness by:

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 286

 Inserting a smooth ball 12mm less than the internal diameter of the pipe. In the absence of
obstructions such as yarn or mortar projecting at the joints the ball should roll down the
invent of the pipe and emerge at the lower end.

 Means of a mirror at one end and a lamp at the other end. If the pipe line is straight the full
circle of light will be seen otherwise obstruction of deviation will be apparent.

(c) The Contractor shall give a smoke test to the drains and sewer at his own expense and
charges, if directed by the Engineer-in-Charge.

(d) A test register shall be maintained which shall be signed and dated by Contractor and
Assistant Engineer.

8. CEMENT CONCRETE AND MASONRY WORKS FOR MANHOLES AND CHAMBERS ETC.

8.1 Cement Concrete for Pipe Support

(a) Wherever specified or shown on the drawings, all pipes shall be supported in concrete bed
and haunching as mentioned.

(b) Unless otherwise directed by the Engineer-in-Charge, cement concrete shall be laid as
follows:-

Description Bedding and Haunching

All underground Sewerage pipes around All round (1:5:10)
the buildings
All underground storm water drainage Minimum width of bedding and haunching is
pipes around the buildings D. Thickness of bedding is d/4 or 100mm
which ever is higher and haunching is upto
D/4 only.(d is internal diameter and D is
external diameter of pipe).Grade of concrete
is 1:5:10

(c) R.C.C. pipes or C.I. pipes ,may be supported on brick masonry or precast R.C.C or Cast insitu
cradles. Cradles shall be as shown on the drawings.
(d) Pipes in loose soil or above ground shall be supported on brick or RCC anchor blocks as shown
on the drawings.

9. MANHOLES AND CHAMBERS

9.1 All manholes(other than RCC manholes), chambers and other such works as specified shall
be constructed in brick masonry in cement mortar 1:4 (1 cement: 4 coarse sand) or as
specified in the Indicative list of item and standard details drawing.

9.2 All Manholes, Chambers, etc., shall be supported on base of cement concrete of such thickness
and mix as given in the Indicative list of item or shown on the drawings or as per CPWD
specifications
Where not specified, Manholes may be constructed as follows:-
(All dimensions internal clear in cms) (As / BMC Regulation)

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 287

Size of Manhole Type 90x80 120X90 91 dia 122 dia 152 dia
Rect. Rect. Circular Circular Circular
Maximum depth As per CPWD specifications
Average thickness of 15 15 -- -- --
R.C.C slab
Size of cover and frame 61x45.5 560 dia. 56 dia 56 dia 56 dia
(Internal dia)

Weight of cover and Heavy duty Heavy duty Heavy duty as Heavy duty as Heavy duty
frame not less than as specified as specified in specified in as specified
in the specified the drawings the drawings in the
drawings in the drawings
drawings

9.3 All manholes shall be provided with cement concrete benching in 1:2:4 mix (1 cement: 2
coarse sand: 4 stone aggregate 20mm nominal size). The benching shall have a slope of 10cm
towards the channel. Benching shall be finished with a floating cost of neat cement.

9.4 All manholes shall be plastered with 12mm thick cement mortar 1:3 (1 cement: 3 coarse
sand) and finished with a floating coat of neat cement inside. All brick masonary Manhole
shall also be plastered outside with 15mm thick cement mortar.

9.5 All manholes with depths greater than 1 M. shall be provided with plastic encapsulated foot
rest as specified in indicative drawing vertically and staggered.

10. NEUTRALIZATION CHAMBER

These shall be provided on Laboratory Room waste lines before discharging the waste into
the main sewer line. It shall be built in RCC masonry and shall be similar in construction to
manholes. They shall be constructed to size as shown at the location on drawings and shall
be provided with drop inlet, drop outlet, galvanized wrought iron sediment pan and a baffle
wall. It shall be provided with 2 Nos., double seal DI Heavy duty manhole cover and frame.

11. MAKING CONNECTIONS

Contractor shall connect the new sewer line to the existing manhole by cutting the, benching
and restoring them to the original condition. A new channel shall be cut in the benching of
the existing manhole for the new connection. Contractor shall remove all sewage and water
if encountered in making the connection without additional cost.

12. COMMISSIONING

12.1 After successful testing of the different sewerage and drainage pipes in parts, the Contractor
shall provide all facilities including necessary pipings, labours, tools and equipments etc. for
carrying out testing and commissioning of the entire external sewerage and drainage system
complete as per requirement in the presence of CPWD Engineers whenever and as may be
required. Generally, the following test/inspection has to be carried out:-

(a) For any Leakages/seepages in the external sewerage and drainage pipes.

(b) For checking the functioning of the entire external sewerage and drainage system including
rainwater harvesting system and to ensure that the waste water is continuously flowing
towards outfall without any intermediate stagnation.

(c) For the functioning of the valves and accessories etc. by putting ON/OFF the controlling
valves of the various diversions in the sewerage and drainage and rain water harvesting
system.
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 288

8 .0 INDICATIVE LIST OF ITEMS FOR INTERNAL PLUMBING SYSTEM

Note:- These items are given to facilitate the contractor to complete the work however if some minor
items are found missing in the list but is required to complete functioning of the work. Nothing will
be paid extra.

S.
Indicative List of Items
No.

SH 8 PLUMBING WORKS

8.1 SANITARY FIXTURES

Providing & fixing white vitreous china wall hung type European type water closet with C.P.
bolts, nuts, C.I. chair or other hanging arrangement, with white solid plastic seat and cover with
lid, dual flush PVC expose cistern (4/2 lpf) with Cistern fittings, C.P. brass hinge rubber buffers,
8.1.1 with accessories,C.I/M.S. brackets painted with two coats of enamel paint of approved shade
over a coat of primer. C.P. brass screws, wooden cleats including cutting and making good the
wall and floors wherever required etc. complete in all respect as per direction of Engineering-
in-charge.
Make: EWC Wall hung type(Jaquar WC_ARS-WHT-39951), (Hindware ELEMENT Model no.
92081), (CERA "CATO" Cat No:"S1043118") Cistern: JAQUAR WHC-WHT-184L, Hindware Seek
fresh, CERA "Combiflush" B1020101)

8.1.2 Providing and Fixing vitreous china floor mounted (European Type) water closet with 'P" or "S"
trap, C.P. bolts, nuts with solid plastic seat & lid, C.P brass hinged rubber buffers with (dual flush
4/2 lpf) cistern with flush pipe, clamp and rubber adapter joint C.P.brass screws and washers
complete including cutting and making good the walls and floors wherever required etc.
complete in all respect as per direction of Engineering-in-charge.
(Jaquar VGS-WHT-81851), (Hindware SPLENDOR 92519), (CERA : CLOUD S1013123)
8.1.3 Providing and fixing water closet squatting pan (Indian type W.C. pan) with 100 mm sand cast
Iron P or S trap, dual flush (4/2 lpf) white P.V.C. flushing cistern of 6 ltr, including flush pipe,
with manually controlled device (handle lever) conforming to IS : 7231, with all fittings and
fixtures complete, including cutting and making good the walls and floors wherever required
etc. complete in all respect as per direction of Engineering-in-charge.
White Vitreous china Orissa pattern W.C. pan of size 580x440 mm with integral type foot rests
(Hindware ECO 20042, Parryware ORRISA C0111) or equivalent model of approved make

8.1.4 Providing and Fixing White vitreous china Under counter wash basin with C.I. brackets painted
white, 15 mm CP Brass auto closing pillar cock of flow less than 3 lpm, 32mm dia. C.P. waste,
C.P chain and rubber plug, C.P. connecting pipe to wall and C.P wall flange and rubber adapter
for waste connection complete including cutting and making good the walls wherever
required etc. complete in all respect as per direction of Engineering-in-charge.
Make: (Jaquar FNS-WHT-40701), (Hindware "GARNET" 10080), (CERA CAMRY S2030105) for
Wash basin Jaquar PRS-CHR-031 GA, HINDWARE F310001ACP, CERA F9020101 for Pillar cock)

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 289

8.1.5 Providing and Fixing White vitreous china over the counter wash basin with C.I. brackets
painted white, 15 mm CP Brass auto closing pillar cock of flow less than 3.0 lpm, 32mm dia. C.P.
waste, C.P chain and rubber plug, C.P. connecting pipe to wall and C.P wall flange and rubber
adapter for waste connection complete including cutting and making good the walls wherever
required etc. complete in all respect as per direction of Engineering-in-charge.
(Jaquar JDS-WHT-25907N, Hindware "AMAZON" 91094, , CERA S2020102) for Washbasin
Jaquar PRS-CHR-031 GA, Hindware F310001ACP, CERA F9020101 for Pillar cock) or
equivalent model of approved make

8.1.6 Providing and Fixing vitreous china urinal with electrical/battery operated concealed
automatic flushing system flow less than 3.0 lpf CP Brass body with C.I. hangers, 15mm dia
inlet to built in spreaders with inbuilt waste with C.P flange for urinal complete including
cutting and making good the walls and floors wherever required etc. complete in all respect
as per direction of Engineering-in-charge.Make: (JAQUAR- URS-WHT-132530, Hindware
"DYNA" 60010, CERA "CARAVAN" S4020105) for UrinalMake (JAQUAR SNR-STL-51083G,
HINDWARE 500963, EURONICS EU 04 BE) for Urinal sensor or equivalent model of approved
make

8.1.7 Providing and Fixing vitreous china water less urinal with C.I. hangers, 15mm dia inlet to built
in spreaders with inbuilt waste with C.P flange, complete including cutting and making good
the walls and floors wherever required etc. complete in all respect as per direction of
Engineering-in-charge.
Make: (HINDWARE "AQUAFREE" 60017, GEBERIT ARTICLE NO: 116.071.00.1) or equivalent
model of approved make

8.1.8 Providing and fixing stone slab with table rubbed, edges rounded and polished, of size 75x50
cm deep and 1.8 cm thick, fixed in urinal partitions by cutting a chase of appropriate width
with chase cutter and embedding the stone in the chase with epoxy grout or with cement
concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 6 mm nominal size) as
per direction of Engineer-in-charge and finished smooth.
Granite Stone of approved shade

8.1.9 Providing and fixing sink with C.I. brackets, C.P. brass chain with rubber plug, 40 mm C.P. brass
waste complete, including painting the fittings and brackets, cutting and making good the
walls wherever required etc. complete in all respect as per direction of Engineering-in-charge.

a) White glazed fire clay sink of size 600x450x 250mm

8.1.10 Providing and fixing Stainless Steel A ISI 304 (18/8) kitchen sink as per IS: 13983 with C.I.
brackets and stainless steel plug 40 mm, including painting of fittings and brackets, cutting
and making good the walls wherever required :
510x1040mm bowl depth 200 mm (Kitchen sink with drain board) (HINDWARE PLATINO
KSS1G4012008, JAYNA SBSD 06, Nirali Elegance Big) or equivalent model of approved make

8.1.11 Providing and Fixing of wall mounted C.P. brass Sink mixer flow less than 6.0 lpm including
cutting and making good the walls wherever required complete in all respects as per direction
of the Engineer-in-charge (JAQUAR FLR-5309NGA) (HINDWARE F110020) (CERA F1005501)

8.1.12 Providing and fixing white vitreous china laboratory sink with C.I. brackets, C.P. brass chain
with rubber plug, 40 mm C.P brass waste and 40mm C.P. brass trap with necessary C.P. brass
unions complete, including painting of fittings and brackets, cutting and making good the wall
wherever required etc. complete in all respect as per direction of Engineering-in-charge.
Size 600x450x200 mm

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 290

8.1.13 Providing & fixing CP brass elbow action bib cock for lab sink flow less than 6.0 lpm including
cutting & making good the walls wherever required complete in all respects as per Engineer-
in-charge.
Make:(JAQUAR CHR 5031 NGA, VIJAY CAT NO: 1057)

8.1.14 Providing and Fixing 15 mm nominal bore CP Brass long body bib cock flow less than 6.0 lpm
of approved quality conforming to IS Standards etc. complete in all respect as per direction of
Engineering-in-charge.
(Jaquar CON-CHR-107KN, Hindware F330002CP,CERA F2006152)

8.1.15 Providing and Fixing C.P. brass towel ring "Round" fixed to PVC cleats with C.P. brass
screws including cutting and making good the walls wherever required etc. complete in all
respect as per direction of Engineering-in-charge.
Make: (JAQUAR ACN 1121BN), (HINDWARE F880007), (KOHLER K-5631 IN-CP
8.1.16 Providing and fixing SS liquid soap dispenser with push lever assembly with soap refill fixed
in wall with Screws complete in all respect as per direction of the engineer-in-charge
Make: (UTEC UT-3100, EURONICS ES-05, TOSHI A-500)

8.1.17 Providing and fixing S.S. body tissue paper dispenser complete including cutting and making
good the walls wherever required etc. complete in all respect as per direction of Engineering-
in-charge.
Make: (JAQUAR PTD-SAP-DT0106CS), (EURONICS EP 01), (UTEC UT-TVB 4000)

8.1.18 Providing and fixing CP Brass Bottle Trap of approved quality & make etc. complete in all
respect as per direction of Engineering-in-charge.
a) 32 mm dia (Jaquar ALD CHR-769L, HINDWARE F850015, CERA F8060401)
b) 40 mm dia (CERA F8060403, Vijay) or equivalent model of approved make

8.1.19 Providing and fixing C.P. brass angle valve of approved quality conforming to IS:8931 etc.
complete in all respect as per direction of Engineering-in-charge. 15mm nominal bore
Make: (Jaquar FLR-CHR-5053N, HINDWARE F860007, CERA F2002201)

8.1.20 Providing and Fixing C.P. Brass Toilet paper holder, including cutting and making good the
walls wherever required etc. complete in all respect as per direction of Engineering-in-charge.
(JAQUAR AHS 1551, Hindware F840009, CERA F5001109)
8.1.21 Providing and fixing Health faucet with 1 metre long Flexible Tube and CP wall hook with PVC
& SS Screws flow less than 6 lpm wherever required complete as directed by the Engineer-in-
charge
Make: (JAQUAR ALD-CHR-573GA, HINDWARE F160023CP, CERA F8030201)

8.1.22 Providing and Fixing two way bib cock flow less than 6.0 lpm complete, including cutting and
making good the walls wherever required etc. complete in all respect as per direction of
Engineering-in-charge. (JAQUAR FLR-5041N, HINDWARE F730004, CERA F1015163)

8.1.23 Providing and Fixing Handicapped set including white vitreous china floor mounted European
type water closet including dual flush exposed cistern (4/2 lpf) , Flat Back wash basin with
one pair of mounting brackets , complete with fittings, seat cover, two no hinged rail 76 cms
and five nos of grab bar 60 cms including 15 mm dia autoclosing pillar cock flow less than 3.0
lpm for Handicaped Toilet complete in all respest as per direction of the engineer-in-charge.
Make:(Hindware Matrix), (Cera Cruse) for Handicapped toilet set or equivalent model of
approved Make Jaquar PRS-CHR-031GA, Hindware F310001ACP, CERA F9020101 for Pillar
cock) or equivalent model of approved make

8.1.24 Providing and fixing C.P cast brass Double coat hook as approved with C.P. brass screws
complete as per instructions of the engineer-in-charge.
Make: (Jaquar ACN-CHR-1161N, Hindware Othello F890001, Parryware T6007A1)
Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil
 291

8.1.25 Providing and Fixing C.P brass Aerosol perfume dispenser, fixed to wooden cleats / Rawl
Plug with C.P brass screws, complete wherever required etc. complete in all respect as per
direction of Engineering-in-charge. Make: (EURONICS EA-03), (UTEC UT-630), (TOSHI EJ-
320 C)

8.1.26 Providing & fixing CP emergency shower with pull chain connected to water supply pipes
including cutting & making good the walls complete in all respects required as per Engineer-
in-charge. (Make VIJAY Cat. No. 1023, EURONICS ESC-01S, OASIS)
8.1.27 Providing & Fixing CP self closing eye wash fountain with CP waste, CP chain & rubber plug,
CP cast brass bottle trap & CP connecting pipe to wall and CP wall flange & rubber adopter for
waste connection complete in all respects including cutting & making good the walls wherever
required etc. complete in all respect as per direction of Engineering-in-charge.
(Make VIJAY Cat. No. 1036, EURONICS - EWW05S, OASIS)

8.1.28 Providing and Fixing straight / offset type flexible single body push fit type WC pan connector
with factory supplied seal guard with integral Single mould sealing fins made of flexible EVA
body, including bush / adaptor for use with C.I. Pipe as supplied with the pan connector etc.
complete in all respect as per direction of Engineering-in-charge. (Make: Viega Cat No:
103868) or equivalent model of approved make

8.1.29 Providing and fixing Stainless Steel Body Auto hand drier to be operated with 220 volts,
single phase, with fully hygienic condition, with all accessories including cutting and making
good the walls, wherever required etc. complete in all respect as per direction of Engineering-
in-charge.
Make: (EURONICS EH 21 NW), (TOSHI HK-2000 SA), (UTEC UT-524)

8.1.30 Providing and Fixing in position storage type Hot Water electrical vertical heaters with copper
container, insulation, and stove enameled M.S. jacket, thermostatically controlled immersion
heater, with pilot lamp, 15/20mm dia inlet with non return valve and 15/20mm dia outlet
including making connections complete in all respects. (wall mounted with suitable M.S. bolts
and nuts)
a) 25 Ltr

8.2 SOIL, WASTE AND VENT PIPES

8.2.1 Providing and fixing soil, waste and vent pipes :

100 mm dia
Hubless centrifugally cast (spun) iron pipes epoxy
coated inside & outside IS:15905

8.2.2 Providing and Fixing M.S. Holder bat clamp (factory manufactured) of approved design to
sand cast iron / cast iron (spun) pipes comprising of M.S. flat brackets made of 50x5 mm flat
of specified shape, projecting 75 mm outside the wall surface and fixed on wall with 4 Nos, 6
mm diameter expansion hold fasteners including drilling necessary holes in brick wall
/CC/RCC surface and the cost of bolts etc. . The pipes shall be fixed to the already fixed
brackets with the help of 30 mmx1.60 mm galvanized M.S. flats of specified shape and total
length 420 mm and shall be fixed with M.S. nuts, bolts and washers of size 25x6 mm, one bolt
on each side of the pipe.
Total bracket length 580 mm of approved shape and design, (for single 100 mm dia pipe)
Total bracket length 810 mm of approved shape and design, (for single 100 mm dia pipe)

8.2.3 Providing and fixing bend of required degree with access door, insertion rubber washer 3 mm
thick, bolts and nuts complete.
100 mm dia

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 292

Hubless centrifugally cast (spun) iron epoxy coated inside & outside as per IS:15905

8.2.4 Providing and fixing plain bend of required degree.

100 mm dia
Hubless centrifugally cast (spun) iron pipes epoxy coated inside & outside IS:15905

8.2.5 Providing and fixing single equal plain junction of required degree :
100x100x100 mm
Hubless centrifugally cast (spun) iron epoxy coated inside & outside as per IS:15905

8.2.6 Providing and fixing double equal plain junction of required degree.
100x100x100x100 mm
Hubless centrifugally cast (spun) iron pipes epoxy coated inside & outside IS:15905

8.2.7 Providing and fixing door piece, insertion rubber washer 3mm thick, bolts & nuts complete :
100 mm
Sand cast iron S&S as per IS – 3989

8.2.8 Providing and Fixing 100 mm dia Terminal guard for Hubless centrifugally cast (spun) iron
epoxy coated inside & outside as per IS:15905
100 mm
Hubless centrifugally cast (spun) iron epoxy coated inside & outside as per IS:15905

8.2.9 Providing and fixing shielded coupling for Hubless centrifugally cast iron pipe
100 mm dia
SS 304 grade coupling with EPDM rubber gasket

8.2.10 Providing and fixing M.S. stays and clamps for sand cast iron hubless pipes of diameter:
100mm

8.2.11 Providing and fixing trap of self cleansing design with screwed down or hinged grating with
or without vent arm complete, including cost of cutting and making good the walls and floors
:
100 mm inlet and 100 mm outlet
Hubless centrifugally cast (spun) iron epoxy coated inside & outside as per IS:15905

8.2.12 Making khurras 45x45 cm with average minimum thickness of 5 cm cement concrete 1:2:4 (1
cement : 2 coarse sand : 4 graded stone aggregate of 20 mm nominal size) over P.V.C. sheet 1
m x1 m x 400 micron, finished with 12 mm cement plaster 1:3 (1 cement : 3 coarse sand) and
a coat of neat cement, rounding the edges and making and finishing the outlet complete.

8.2.13 Providing and Fixing G.I. Reducing elbow (Floor drain) of 100 x 50 mm in cement concrete
1:2:4 at all levels for floor drains for connection to floor traps in sunken portions, complete as
per drawings and as per approval of the engineer-in-charge.

8.2.14 Providing, fixing, testing & Commissioning of PP materials filled low noise level soil, waste and
vent pipe with density 1.9 g/cm3 conforming to DIN EN 12056 along with all required fittings
like tees, bends, cowls, crosses with or without access doors jointed with approved push fit
rubber ring socket joint / solvent cement fixed to walls and ceilings, cutting holes in brickwall
wherever required, filling the annular space between pipe & wall/slab/beam with hand mixed
concrete 1:2:4 (1 cement: 2 coarse sand: 4 graded stone aggregate 20 mm nominal size) and
making good the floors, beams and walls with cement mortar where required complete of
outer diameter.(For LABS)
a) 50 MM OD
Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil
 293

b) 75 MM OD
c) 110 mm OD

8.2.15 Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS :
13592 Type A including jointing with seal ring conforming to IS : 5382 leaving 10 mm gap for
thermal expansion.(i) Single socketed pipes.
a)75 MM Diameter
b)110 MM Diameter

8.2.16 Providing and fixing 100 mm diameter and 60 cm long rain water spout in cement mortar 1:4
(1 cement : 4 fine sand).
a)uPVC spout Type A

8.2.17 Providing and fixing on wall face unplasticised - PVC moulded fittings/ accessories for
unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A including jointing
with seal ring conforming to IS : 5382 leaving 10 mm gap for thermal expansion.
a)Single Push fit coupler
75 mm dia

110 mm dia

b)Single Tee with door

75x75x75 mm dia
110x110x110 mm dia

c) Bend 87.5 Deg

75 mm dia
110 mm dia

d) Shoe (Plain)
75 mm dia
110 mm dia

8.2.18 Providing and Fixing of G.I. coated holder bat clamp of approved design to uPVC pipes
comprising of G.I. coated holder flat brackets made of 50X5 mm flat of specified shape,
projecting 75 mm outside the wall surface and fixed on wall with 2 nos. 6 mm dia. expansion
hold fasteners, including drilling necessary holes in brick wall/CC/RCC surface and cost of
bolts etc.The pipes shall be fixed to the already fixed brackets with the help of 6 mm dia.
galvanised bar of specified shape and of total length 400 mm and shall be fixed with G.I. coated
nuts , bolts & washers one bolt on each side of the pipe etc complete in all respect as per
direction of Engineering-in-charge. (Rain water pipes)
a) 75 mm dia
b) 110 mm dia

8.2.19 Providing and Fixing to the inlet mouth of rain water pipe SS 304 grating of following diameter
complete in all respects as per direction of the engineer-in-charge
a) For 75 mm dia
b) For 100 mm dia
c) For 150 mm dia

8.2.20 Providing and Fixing G.I. "B" class pipe complete with G.I. Fittings and clamps, including
cutting and making good the walls etc.(Internal work)
a)32 mm dia
b)40 mm dia
c)50 mm dia

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 294

8.2.21 Painting of G.I. Pipes and fittings with two coats of anti-corrosive bitumastic paint of approved
quality.
a)32 mm dia
b)40 mm dia
c)50 mm dia
8.2.22 Providing and fixing G.I. Inlet fittings with maximum 3 inlets 32,40 & 50 mm size fabricated
from 100 mm dia G.I. pipes and welded G.I. sockets, fixed to C.I. Trap with joints and set in
cement concrete(1:2:4) complete as directed by Engineer-in-charge.
8.2.23 Providing and Fixing SS 304 Grating with frame and SS Screws casted heavy 125 mm dia
complete as directed by Engineer-in-charge.

8.2.24 Providing and fixing cast brass cleanout plug / floor cleanout with suitable insert keys for
opening, male threaded joint with G.I. socket caulked to spun soil pipe including cost of
joint etc.complete as directed by Engineer-in-charge.
a) 100 mm dia
b) 150 mm dia

8.2.25 Providing and fixing 160 mm dia UPVC rain water pipes of 6 kg./cm2 'Type A' conforming to
IS: 4985 including all fittings with or without access door or without access i.e bends,
junctions, cowls, offsets, etc., and jointing with solvent cement and excavation, refilling and
disposal of surplus earth, including cutting holes in walls and floors, excavation, refilling and
disposal of surplus earth wherever required and making good the same, complete as directed
by the Engineer-in-Charge.

8.2.26 Making core cutting holes for C.I. Pipe of 100 mm dia. etc. in R.C.C. floors and roofs for passing
C.I. pipe etc. and repairing the hole after insertion of C.I. pipe etc. with cement concrete 1:2:4
(1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), including finishing
complete so as to make it leak proof.

8.2.27 Providing and fixing 6 mm dia. G.I. level adjusting hangers (upto 1200mm length), fixed to roof
slabs by means of ceiling cleats made out of G.I. flat 40x3mm size 60 mm long and stainless
steel expandable dash fastener of 12.5 mm dia and 50 mm long, complete as per direction of
Engineer-in-charge.
8.2.28 Preparing the inside surface of core for bore packing by roughening using suitable file to get
better adhesion prior to packing works. Cleaning the surface by wire brushing followed water
jet to remove any laitance or loose flaky particles. Providing necessary form work for packing
the bore using suitable arrangement (depending upon site conditions). Applying a coat of
styrene- butadiene based polymer coating using Nitobond SBR to enhance adhesion between
the packing material and other surfaces and Application of swellable Supercast SW20 at the
middle of over the pipe external side and. Packing the gap using non-shrink cement polymer
based grout using Conbextra GP2 upto the surface of the bore whilst the Nitobond SBR is in
tacky state completely for 100 mm dia. pipe as per the manufacturer’s Instruction and as per
direction of the engineer-in-charge.

8.2.29 Providing and fixing pre-fab polymer concrete channels conforming to relevant EN standards
with V-shaped profile, tounge and groove jointing arrangement, in-built ductile iron edge rail,
with in-built slope along the complete length of the channel, and polymer concrete channels
to be made of zero water absorbtion, of density being 2.1 - 2.3gm/cm3, with surface roughness
of approx 25 μm, with SS grating at the top complete in all respect including all necessary civil
and finishing works as required as per site and the instructions of the engineer - in - charge,
(Make: ACO or approved equivalent) for following sizes: Size 250 x 385 mm (B x H)

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 295

8.2.30 Supply and installation of Slot Drain K-100 Brickslot polymer concrete channels having
Length of 1000 mm, Width of 130 and depth as per site requirement confirming to Euro
Norms DIN EN 1433 of , V-shaped profile, tounge and groove jointing arrangement, inbuild
galvanized iron edge rail and a approx weight of 16 kg/unit. These channels have Stainless
Steel Slot and confirming to Load Class A15 as per EN DIN 1433. Inspection Unit of 500 mm
length ,130mm width and depth as per site requirement is also provided with the unit .

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 296

8.3 WATER SUPPLY (INTERNAL AND EXTERNAL AROUND THE BUILDING)

8.3.1 Excavating trenches of required width for pipes, cables, etc including excavation for sockets,
and dressing of sides, ramming of bottoms, depth upto 1.5 m, including getting out the
excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth,
including consolidating each deposited layer by ramming, watering, etc. and disposing of
surplus excavated soil as directed, within a lead of 50 m :
All Kinds of Soil Pipes, cables etc, not exceeding 80 mm dia.

8.3.2 Excavating trenches of required width for pipes, cables, etc including excavation for sockets,
and dressing of sides, ramming of bottoms, depth upto 1.5 m, including getting out the
excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth,
including consolidating each deposited layer by ramming, watering, etc. and disposing of
surplus excavated soil as directed, within a lead of 50 m :
All Kinds of Soil
Pipes, cables etc. exceeding 80 mm dia. but not exceeding 300 mm dia

8.3.3 Providing and fixing G.I. pipes complete with G.I. fittings and clamps, i/c cutting and making
good the walls etc. Internal work - exposed on wall
a) 20 mm nominal bore
b) 25 mm nominal bore
c) 32mm nominal bore
d) 40 mm nominal bore
e) 50 mm nominal bore
f) 65 mm nominal bore
g) 80 mm nominal bore

8.3.4 Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc.
External works
a) 25 mm nominal bore
b) 32 mm nominal bore
c) 40 mm nominal bore
d) 50 mm nominal bore
e) 65mm nominal bore
f) 80mm nominal bore
g) 100 mm nominal bore
h) 150 mm nominal bore

8.3.5 Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability
for hot & cold water supply, including all CPVC plain & brass threaded fittings, i/c fixing the
pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step
CPVC solvent cement and the cost of cutting chases and making good the same including
testing of joints complete as per direction of Engineer in Charge.

CONCEALED WORK, including cutting chases and making good the wall etc.
a) 15 mm nominal outer dia pipes
b) 20 mm nominal outer dia pipes
c) 25 mm nominal outer dia pipes
d) 32 mm nominal outer dia pipes
e) 40 mm nominal outer dia pipes
f) 50 mm nominal outer dia pipes

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 297

8.3.6 Providing and fixing Stainless Steel 316 L pipes confirming to EN 10312 complete with Press
Type fittings with SC-Contur in accordance with DVGW regulation W534 such as sockets,
bends, elbows, tees, reducers, unions, Flanges, clamps/structural steel supports, hangers etc.
necessary adapters SS to CP fittings, jointing, sundries, cutting holes in walls/floors/slabs &
making good including wraping with polythene sheet tape etc. (For drinking water
purposes):
a) 15 mm OD
b) 22 mm OD
c) 28 mm OD
d) 35 mm OD
e) 42 mm OD

8.3.7 Providing and fixing G.I. Union in G.I. pipe including cutting and threading the pipe and
making long screws etc. complete (New work) :
a) 20 mm dia
b) 25 mm dia
c) 32 mm dia
d) 40 mm dia
e) 50 mm dia
f) 65 mm dia
g) 80 mm dia

8.3.8 Painting G.I. pipes and fittings with synthetic enamel white paint with two coats over a ready
mixed priming coat, both of approved quality for new work :
a) 20 mm dia
b) 25 mm dia
c) 32 mm dia
d) 40 mm dia
e) 50 mm dia
f) 65 mm dia
g) 80 mm dia

8.3.9 Providing and filling sand of grading zone v or coarser grade all-round the G.I. Pipe in external
work
a) 25 mm dia pipe
b) 32 mm dia pipe
c) 40 mm dia pipe
d) 50 mm dia pipe
e) 65 mm dia pipe
f) 80 mm dia pipe
g) 100 mm dia pipe
h) 150 mm dia pipe

8.3.10 Providing and Laying anti corrosive tape, 100 mm wide and 4 mm thick including an initial
coat of primer for preventing the corrosion of buried pipes in trenches, complete in all
respects as per the direction of engineer-in-charge.

a) 25 mm dia pipe
b) 32 mm dia pipe
c) 40 mm dia pipe
d) 50 mm dia pipe

8.3.11 Providing and fixing forged brass lever operated ball valve of full flow with forged brass ball
(Machined to mirror smooth finsh with hard chrome plated) and spindle with setting and

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 298

gland of superior quality having minimum working pressure of 16 kg/cm2 etc. complete in
all respect.
a) 20 mm dia
b) 25 mm dia
c) 32 mm dia
d) 40 mm dia
e) 50 mm dia

8.3.12 Providing and fixing C.I butterfly valve, wafer end type class PN 1.6 as per I.S:13095 or
BS:5155, including necessary nuts, bolts, gaskets etc., complete
a) 65 mm dia
b) 80 mm dia
c) 100 mm dia
d) 150 mm dia

8.3.13 Constructing masonry chamber 30x30x50 cm with cement based fly ash bricks, inside with
brick work in cement mortar 1:4 (1 cement : 4 Coarse sand) for stop cock, with C.I. surface
box 100x100x75 mm (inside) with hinged cover fixed in cement concrete slab1:2:4 mix (1
cement: 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) necessary
excavation foundation concrete 1:5:10 mix (1 cement : 5 fine sand and 10 graded stone
aggregate 40 mm nominal size) and inside plastering with cement mortar 1:3 (1 cement :
3 coarse sand) 12 mm thick finished with a floating coat of neat cement complete as per
standard design.
With cement based fly ash bricks of class designation 7.5.Extra depth to be provided as per
site condition if required

8.3.14 Constructing masonry Chamber 60x60x75 cm inside, in brick work in cement mortar 1:4 (1
cement : 4 coarse sand) for sluice valve, with C.I. surface box 100mm. top diameter, 160 mm
bottom diameter and 180 mm deep ( inside) with chained lid and RCC top slab 1:2:4 mix (1
cement :2 coarse sand : 4 graded stone aggregate 20mm nominal size ) , i/c necessary
excavation, foundation concrete 1:5:10 (1 cement : 5 fine sand : 10 graded stone aggregate
40 mm nominal size) and inside plastering with cement mortar 1:3 (1 cement : 3 coarse sand)
12 mm thick finished with a floating coat of neat cement complete as per standard design :
With cement based fly ash bricks of class designation 7.5.Extra depth to be provided as per
site condition if required.

8.3.15 Constructing brick masonry chamber for underground C.I. inspection chamber and bends
with bricks in cement mortar 1:4 (1 cement : 4 coarse sand) C.I. cover with frame (light duty)
455x610 mm internal dimensions, total weight of cover with frame to be not less than 38 kg
(weight of cover 23 kg and weight of frame 15 kg), R.C.C. top slab with 1:1.5:3 mix (1 cement
: 1.5 Fine sand : 3 graded stone aggregate 20 mm nominal size), foundation concrete 1:5:10
(1 cement : 5 fine sand : 10 graded stone aggregate 40 mm nominal size), inside plastering 12
mm thick with cement mortar 1:3 (1 cement : 3 coarse sand), finished smooth with a floating
coat of neat cement on walls and bed concrete etc. complete as per standard design:
Inside dimensions 500x700 mm and 45 cm deep for pipe line with one or two inlets :
With cement based fly ash bricks of class designation 7.5

8.3.16 Extra for depth beyond 45 cm of brick masonry chamber :

For 500x700 mm size
With cement based fly ash bricks of class designation 7.5

8.3.17 Providing and placing on terrace (at all floor levels) polyethylene water storage tank, IS :
12701 marked, with cover and suitable locking arrangement and making necessary holes for
inlet, outlet and overflow pipes but without fittings and the base support for tank.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 299

8.3.18 Providing and Fixing of double flanged Water Flow Electromagnetic type Meter complete
with digital display provision & including Pulse generator and Remote Totalizer complete in
all respect as per the technical specifications.

a) 25 mm dia
b) 32 mm dia
c) 40 mm dia
d) 50 mm dia

8.3.19 Providing and Fixing Pressure Reducing station for cold water supply comprising of 2 Nos. of
brass ball valves on outlet and bye-pass and ball valve with inbuilt strainers and a PRV
(Diaphram type) unit with out going pressure gauge with flanged or union connection
including safety valve. The complete system is tested to a pressure not less than 15 Kg/Cm2
and suitable to reduce the pressure from 3.5 Kg/Cm2 to 1.0 Kg/Cm2(or as desired at site)
including flanges/unions, nuts, bolts and washers complete as required for applications.
(Horizontal or vertical as applicable).
a) 25 mm dia
b) 32 mm dia
c) 40 mm dia
d) 50 mm dia

8.3.20 Providing & fixing M.S. structural work fabricated from standard section e.g. M.S rounds,
angles, channels, plates including cutting to size, drilling, welding fixing and welding to insert
plates in RCC structural members as directed by engineer-in-charge including cutting and making
good the walls, ceilings and floors.

8.4 SEWERAGE AND DRAINAGE SYSTEM AROUND THE BUILDINGS

8.4.1 Excavating trenches of required width for pipes, cables, etc., including excavation for sockets,
and dressing of sides, ramming of bottoms, depth upto 1.5m, including getting out the
excavated soil, and then returning soil as required, in layers not exceeding 20cm in depth
including consolidating each deposited layer by ramming, watering etc. and disposing of
surplus excavated soil as directed within a lead of 50 m.
All Kinds of Soil/Ordinary rock
Pipes, cables etc., exceeding 80mm dia but not exceeding 300mm dia
8.4.2 Extra for excavating trenches for pipes, cables, etc. in All Kinds soil/ordinary rock exceeding
1.5 m in depth but not exceeding 3 m.
All Kinds of Soil/Ordinary rock
Pipes, cables etc., exceeding 80mm dia but not exceeding 300mm dia

8.4.3 Providing and laying non-pressure NP2 class R.C.C. pipes with collars jointed with stiff
mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of
joints etc. complete.
a) 150 mm Dia
b) 200 mm Dia
c) 250 mm dia
d) 300 mm dia

8.4.4 Providing and laying cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone
aggregate 40 mm nominal size) all-round the pipes of different dia for sewerline including bed
concrete as per standard design.

a) 150 mm dia.
b) 200 mm dia.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 300

8.4.5 Providing and Laying Double wall corrugated (SN-8 class) Black pipes conforming to IS:
16098 Part -2, for Sewerage system with all required fittings including jointing by click ring
& sealing ring/ solvent cement joint including testing of joints, setting right the leaking of
joints etc. complete as per instructions of the Engineer-In-Charge.
a) 150 mm dia..
b) 200 mm dia.

8.4.6 Providing and fixing square-mouth S.W. gully trap class SP-1 complete with C.I. grating brick
masonry chamber with water tight C.I. cover with frame of 300 x300 mm size (inside) the
weight of cover to be not less than 4.50 kg and frame to be not less than 2.70 kg as per standard
design ::
150 x 100 mm size P type With cement based fly ash bricks of class designation 7.5
8.4.7 Providing and fixing square-mouth S.W. gully trap class SP-1 complete with C.I. grating brick
masonry chamber with water tight C.I. cover with frame of 300 x300 mm size (inside) the
weight of cover to be not less than 4.50 kg and frame to be not less than 2.70 kg as per standard
design ::
180 x 150 mm size P type With cement based fly ash bricks of class designation 7.5

8.4.8 Constructing brick masonry manhole in cement mortar 1:4 (1 cement : 4 coarse sand) with
RCC Top slab with 1:2:4 mix (1 cement : 2 coarse sand: 4 graded stone aggregate 20mm
nominal size) foundation concrete 1:4:8 mix ( 1 cement :4 coarse sand: 8 graded stone
aggregate 40 nominal size), inside plastering 12mm thick with cement mortar 1:3 ( 1 cement
: 3 coarse sand), finished with a floating coat of neat cement and making channels in cement
concrete 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20mm nominal size)
finished with a floating coat of neat cement complete as per standard design .
Inside size 90x80 cm and 45 cm deep including C.I. cover with frame (Heavy duty) 455x610
mm internal dimensions, total weight of cover and frame to be not less than 38 kg (weight of
cover 23 kg and weight of frame 15 kg) .(Excavation of manhole and 12mm thick cement
plaster at the external surface is included) With cement based fly ash bricks of class
designation 7.5
8.4.9 Constructing brick masonry manhole in cement mortar 1:4 (1 cement : 4 coarse sand) with
RCC Top slab with 1:2:4 mix (1 cement : 2 coarse sand: 4 graded stone aggregate 20mm
nominal size) foundation concrete 1:4:8 mix ( 1 cement :4 coarse sand: 8 graded stone
aggregate 40 nominal size), inside plastering 12mm thick with cement mortar 1:3 ( 1 cement
: 3 coarse sand), finished with a floating coat of neat cement and making channels in cement
concrete 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20mm nominal size)
finished with a floating coat of neat cement complete as per standard design .
'Inside size 120x90 cm and 90 cm deep including C.I. cover with frame (heavy duty) 560 mm
internal diameter, total weight of cover and frame to be not less than 116 kg (weight of cover
58 kg and weight of frame 58 kg) .
(Excavation of manhole and 12mm thick cement plaster at the external surface is included)
With cement based fly ash bricks of class designation 7.5
8.4.10 Extra depth of manholes Size 90x80cms With cement based fly ash Bricks with class
designation75
8.4.11 Extra depth of manholes Size 120x90cms With cement based fly ash Bricks with class
designation75

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 301

8.4.12 Constructing Brick Masonry circular type manhole 0.91 m internal dia at bottom and 0.56m
dia at top in cement mortar 1:4 (1 cement : 4 Coarse sand), inside cement plaster 12mm thick
with cement mortar 1:3 ( 1 cement : 3 coarse sand) finished with a floating coat of neat
cement, foundation concrete 1:3:6 mix ( 1 cement : 3 coarse sand : 6 graded stone aggregate
40mm nominal size) and making necessary channel in Cement Concrete 1:2:4 ( 1 Cement : 2
Coarse Sand : 4 Graded Stone aggregate 20mm nominal size) finished with a floating coat of
neat cement all complete as per standard design. External surface shall be finished with
15mm thick cement plaster 1:6 ( 1 cement : 6 Coarse sand) as per side conditions.
0.91 m deep with SFRC cover and frame (heavy duty, HD- 20 grade designation) 560 mm
internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than
182 kg., fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate
20 mm nominal size) including centering, shuttering all complete.(Excavation, foot rests and
12mm thick cement plaster at the external surface is included) :
With cement based fly ash bricks of class designation 7.5

8.4.13 Extra depth for circular type Manhole 0.91 internal dia with cement based fly ash Bricks class
designation 75, depth beyond 0.91 m to 1.67 m
8.4.14 Constructing Brick Masonry circular manhole 1.22 m internal dia at bottom and 0.56m dia at
top in cement mortar 1:4 (1 cement : 4 Coarse sand), cement plaster 12mm thick with cement
mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement, foundation
concrete 1:3:6 mix ( 1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size)
and making necessary channel in Cement Concrete 1:2:4 ( 1 Cement : 2 Coarse Sand : 4 Graded
Stone Aggregate 20mm nominal size) finished with a floating coat of neat cement all complete
as per standard design. External surface shall be finished with 15mm thick cement plaster
1:6 ( 1 cement : 6 Coarse sand) as per side conditions.
1.68 m deep with SFRC Cover and frame (heavy duty HD- 20 grade designation) 560 mm
internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than
182 kg. fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate
20 mm nominal size) including centering, shuttering all complete.
(Excavation, foot rests and 12 mm thick cement plaster at the external surface is included in
item)
With cement based fly ash bricks of class designation 7.5

8.4.15 Extra depth for Circular type Manhole 1.22 m internal dia (at Bottom) With cement based fly
ash bricks class designation 75, Depth beyond 1.68 to 2.29 m.

8.4.16 Constructing Brick Masonry circular manhole 1.52 m internal dia at bottom and 0.56m dia at
top in cement mortar 1:4 (1 cement : 4 Coarse sand), inside cement plaster 12mm thick with
cement mortar 1:3 ( 1 cement : 3 coarse sand) finished with a floating coat of neat cement,
foundation concrete 1:3:6 mix ( 1 cement : 3 coarse sand : 6 graded stone aggregate 40
mm nominal size) and making necessary channel in Cement Concrete 1:2:4 ( 1 Cement : 2
Coarse Sand : 4 Graded Stone Aggregate 20mm nominal size) finished with a floating coat of
neat cement all complete as per standard design .External surface shall be finished with
15mm thick cement plaster 1:6 ( 1 cement : 6 Coarse sand) as per side conditions.
2.30 m deep with SFRC Cover and frame (heavy duty HD-20 grade designation) 560 mm
internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than
182 kg. fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate
20 mm nominal size) including centering, shuttering all complete.
(Excavation, foot rests and 12 mm thick cement plaster at the external surface is included in
item)
With cement based fly ash bricks of class designation 7.5

8.4.17 Extra depth for circular type manhole 1.52 m internal dia (at bottom) beyond 2.30 m :
With cement based fly ash bricks of class designation 7.5

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 302

8.4.18 Providing & fixing orange colour safety foot rest of minimum 6mm thick plastic encapsulated
as per I.S:10910 on 12 mm dia steel bar conforming to I.S:1786 having minimum cross section
as 23mm x 25mm and over all minimum length 263mm and width as 165mm with minimum
165 mm space between protruded legs having 2mm tread on top surface by ribbing or
chequering besides necessary and adequate anchoring projections on tail length on 138mm
as per standard drawing and suitable to with stand the bend test and chemical resistance test
as per specifications and having manufacturer's permanent identification mark to be visible
even after fixing, including fixing in manholes with 30x20x15cm cement concrete block 1:3:6
(1 cement: 3 coarse sand: 6 graded stone aggregate 20mm nominal size) complete as per
design.

8.4.19 Constructing brick masonry road gully chamber 45x45x77.5 cm with bricks in cement mortar
1:4 (1 cement : 4 coarse sand ) with precast R.C.C. vertical grating complete as per standard
design, .(Excavation of manhole and 12mm thick cement plaster at the external surface is
included)
With cement based fly ash bricks of class designation 7.5.
8.4.20
Extra depth of rgc up to 100 cm

8.4.21 Constructing brick masonry road gully chamber 50x45x60 cm with bricks in cement mortar
1:4 (1 cement : 4 coarse sand) including 500x450 mm pre-cast R.C.C. horizontal grating with
frame complete as per standard design, .(Excavation of manhole and 12mm thick cement
plaster at the external surface is included)With cement based fly ash bricks of class
designation 7.5.
8.4.22
Extra depth of RGC up to 100 cm.

8.4.23 Constructing brick masonry road gully chamber 110x50x77.5 cm with bricks in cement
mortar 1:4 (1 cement : 4 coarse sand) including 500x450 mm precast R.C.C. horizontal grating
with frame and vertical grating complete as per standard design,(Excavation of manhole and
12mm thick cement plaster at the external surface is included.)
With cement based fly ash bricks of class designation 7.5.

8.4.24 Extra depth of RGC up to 120 cm

8.4.25 Construction of Grease trap of size 2 m x 1 m (Internal) with effective depth as required on
site with Brick Masonry in Cement 1:4 (1 Cement: 4 Coarse sand) over a bed of 150 mm thick
PCC 1:5:10 (1 Cement: 5 Coarse sand: 10 graded stone aggregate 40 mm nominal size)
including a baffle wall of Brick work, covered with RCC slab of 150 mm thickness, of 1:2:4 mix
(1 Cement: 2 Coarse sand: 4 graded stone aggregate of 20 mm nominal size) including
centering, shuttering and reinforcement complete with providing and fixing Foot rests @300
mm C to C with Two 600x600 mm D.I. Manhole Covers with Lifting arrangement, including
150 mm dia Inlet & Outlet pipes complete . (Excavation of manhole and 12mm thick cement
plaster at the external surface is included.)

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 303

8.4.26 Construction of Neutralization chamber of size 2000 mm x1000 mm (Internal) with effective
depth as required on site with Brick Masonry in Cement 1:4 (1 Cement: 4 Coarse sand) over
a bed of 150 mm thick PCC 1:4:8 (1 Cement: 4 Coarse sand: 8 graded stone aggregate 40 mm
nominal size) including , covered with RCC slab of 150 mm thickness, of 1:2:4 mix (1 Cement:
2 Coarse sand: 4 graded stone aggregate of 20 mm nominal size) including centering,
shuttering and reinforcement complete with providing and fixing Foot rests @300 mm C to C
with two 610x455 mm DI Heavy duty Manhole Covers with Lifting arrangement, including
150 mm dia Inlet & Outlet pipes complete etc. in all respect as per direction of Engineering-
in-charge. ,(Excavation of manhole and 12mm thick cement plaster at the external surface is
included.)
8.4.27
Providing and laying cement concrete 1:5:10 (1 cement: 5 coarse sand : 10 graded stone
aggregate 40 mm nominal size) uo to hauches for drainage pipes as per standard design as
shown in drawing/specification to drainage pipes of different diameter including bed
concrete.
a)150 mm
b)200 mm
c)250 mm
d)300 mm
8.5 MISCELLANEOUS

8.5.1 Providing and fixing 750 mm long hot dipped G.I. Puddle flanges for water tanks as per I.S.
1239 (Class C) with 6mm thick M.S. Plate of suitable size and welded alround the pipe fixed
in walls, beams and top slab of R.C.C tanks, complete with all details in all respects and as per
drawing. (For over head tanks & underground)
a) 25 mm dia

b) 32 mm dia

c) 40 mm dia

d) 50 mm dia

e) 65 mm dia

f) 80 mm dia

g) 100 mm dia

h) 150 mm dia

8.5.2 Providing and fixing 80 mm dia insect-proof coupling to vent pipes of overhead tank with
threaded or flanged joints, including M.S. flanges, nuts, bolts, 3mm thick rubber insertions
complete.
8.5.3 Providing and fixing of wall hanging drinking water fountain, made by stainless steel top
and heavy duty galvanized steel frame. ADA Compliant, size 472 mm Depth X 447mm width,
flexible bubbler guard , operated between 50 to 120 PSI, Complete with all accessories which
include MD-CU29, which is an EPA registered antimicrobial copper that fights off
microorganisms which include MRSA and e-coli on push pad. The water Fountain shall
certified by NSF-USA, Green building, TUN, UL, to be placed at different location of buidling.
installing the Water Fountain for proper functioning and aesthetic view as directed by the
engineer-in-charge without any extra cost.

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 304

LIST OF PREFERRED MAKES OF MATERIALS

(FOR PLUMBING SYSTEM FOR BUILDINGS)
Preferred makes of materials to be used in the work is given below and Contractor shall procure
the material mentioned in the list from any one of the preferred makes only. The Engineer in charge
reserves the right to select any of the makes/brands indicated in the list of approved brand/make.
The tenderers shall quote his rates on the basis of the price for the best quality product of the
brand/make stipulated for the item of work in the schedule of quantity/specification/list of preffered
brand/ make. In case of nonavailability of these makes, the Engineer-in-charge may allow use of
alternative BIS marked materials/makes in the work. Non BIS marked materials may bepermitted
by the Engineer-in-charge only when BIS marked materials are not available/manufactured.

S.No Materials Brand & Manufacturer

1. Sanitary Fixtures & fittings As per the Model no. & make given in indicative list
of items
2. G.I. pipes TATA/JINDAL HISSAR/Zenith/Surya Prakash
3. G.I. Fittings for Water Supply UNIK/ZOLOTO/KS or approved equivalent
(Malleable)
5. SS Pipes 316 JINDAL STAINLESS/VIEGA or approved equivalent
6. uPVC pipes SUPREME/PRINCE/ASTRAL/ASHIRWAD/Finolex
7. UPVC pipe Pressure Fittings SUPREME/PRINCE/ASTRAL/ASHIRWAD/Finolex
8. CPVC pipes SUPREME/PRINCE/AKG/ASTRAL/ASHIRVAD
9. Centrifugal Cast Iron Hubless Pipes NECO/Kapilansh/SKF/BIC
& fittings
10. Poly propylene pipes for lab waste HULIOT/ASTRAL/SKOLAN/POLOPLAST
11. Gully Trap ANAND/BK CERAMICS INDUSTRY/LOCAL
APPROVED AS PER BIS STANDARDS
12. RCC HUME PIPES ISI Marked Pipe
13. DWC pipe for sewerage system (IS SUPREME/PRINCE or equivalent approved
16098)
14. Insulation For Pipes CAREFLEX/ARMAFLEX/THERMAFLEX
16. Pipe protection For External Water PYPKOTE/MAKPOLYKOTE/ARMAFLEX
Supply Pipes
17. Pre-Fabricated Structural supports CHILLY/MUPRO/CAMRY
and clamps
18. Paints ASIAN PAINTS/BERGER/SHALIMAR
19. C.I Manholes cover NECO/KARTAR/RIF
20. SFRC Manhole Cover & Gratings KK/ABC-ACCURATE BUILDCON/JAIN/PARGATI
21. Plastic Encapsulated Foot Rest KGM/KK/ABC
22. Ball valves SKS/LEADER/ZOLOTO/SANT
23. Butterfly valve SKS/LEADER/ZOLOTO/SANT
24 Motorized butterfly valve with LEHRY/CASTLE/AIP
controller for OHT
25. Pressure reducing valve SKS/LEADER/ZOLOTO/SANT
26. Air Release Valve SKS/LEADER/ZOLOTO/SANT
27. C.I double flanged sluice valve KIRLOSKAR/LEADER/SANT

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil

 305

S.No Materials Brand & Manufacturer

28. Float valve (gunmetal) upto 40mm SKS/LEADER/ZOLOTO/SANT
29. Float valve (C.I) 50mm and above SKS/LEADER/ZOLOTO/SANT
30. Altitude / Equilibrium Float Valve CSA/HONEYWELL/LEADER/SANT/ZOLOTO
31. C.I Strainer more than 65mm dia. SKS/LEADER/ZOLOTO/SANT
32. Pressure reducing valve SKS/LEADER/ZOLOTO/SANT
33. Solenoid valve DANFOSS/HONEYWELL
34. PVC Water storage tank SINTEX/SHEETAL/SUPREME
35 PRECAST RCC grating for RGC KKM/KK/ SUPREME/PARGATI
36 Grating NEER/MARVELLS/VIJAY METALS/ INTELLOTECH
37 Drinking water fountain OASIS /FILTRINE/SUNROCK
38 Clean out plug /COP/FCO NEER/VIJAY METALS/MARVELLS
39 SS Polymer concrete drain channel ACO/MEA DRAIN or approved equivalent
-:-

Correction –Nil Insertion –Nil Deletion –Nil Overwriting -Nil