L&T Formwork PDF
L&T Formwork PDF
• How formwork can be erected and de- • L&T-formwork systems are easy to
shuttered fast. understand for Traditional Workmen, flexible
and simple to assemble, requiring very little
working skill.
• How good concrete quality and surface
finish can be achieved. • Uniformly good quality of finish is achieved
due to the manufacture of the various
components under strict quality control and
their dimensional stability. The recommended
• What is the optimum stock of formwork sheathing is plywood which delivers high
required for the size of work force, the quality surface finish eliminating the need for
specified time schedule and flow of plastering.
materials and what is the overall cost
savings that can be achieved using the • Components are few, versatile and inter
right type of formwork changeable for all major applications. The
system gives high labour and material
productivity and hence investment need be
made on the minimum quantity of formwork
• How safety can be improved for the site items.
personnel.
• The systems are designed to European
standards of safety. Components are light
and self standing.
PRODUCT INFORMATION
RESPONSIBLE IF ANY PRODUCT DATA CONTAINED IN THIS CATALOGUE
The H-beams are manufactured in a modern automated plant at Pondicherry under strict
quality control the flanges are made of seasoned chemically treated timber. The web is made
of boiling water proof ply wood and joined with the flange by the unique finger jointing method. PLY WOOD
160MM
The H-beams thus manufactured are light, dimensionally stable and retains its structural 20MM
properties over a period of time even after repeated usage. It is more predictable, easy to
design and use, The number of reuses of H-Beams is more than 100 times (8 times that of
conventional timber) and it consumes only 40% of timber volume required.
TIMBER
The H-beams are available in two size namely in H-16 - 16 cms depth & H-20 - 20 cms
depth, length varying between 1m to 6m.
WRITTEN CONSENT
TYPICAL C/S OF H-16 BEAM
SALIENT FEATURES
• Reduction in consumption of timber.
• Making work at site minimised.
• No.of reuses more than 8 times that of conventional timber.
• Dimensionally stable, uniform in size and consistent in strength.
• Cost ratio per use H-16 beam : conventional timber = 1:3.5
• Economical and long - lasting.
• Light weight ≅ 6kgs per RMT.
MAX Q MAX M EI
600 KG 300 KG.M 145 x 10 KG.CM2
6
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
RC. SLAB
The plywood sheathing is supported by a layer of secondary H-Beams at the designed spacing. The
primary layer of H-Beams are supported with necessary accessories over the collapsible telescopic SEC. H-BEAM
props fitted with tripods to ensure lateral stability. FOURWAY HEAD PRI. H-BEAM
The props are available in various sizes viz. CT-250,CT-300,CT-340 & CT-410. The number indicates
the extended length of props in cms.
The tripods make the props self standing for easier and faster erection of the shuttering system. The
adjustments in height are obtained by operating the prop nut. The required dimension in plan is
obtained by side-lapping of the H-Beams in the primary or secondary layer. CT PROP
A very accurate and convenient shutter is ready for tying of reinforcement and concreting.
TRIPOD
The system also facilitates re-propping. By adopting the method of repropping it is possible to reduce
the total quantity of formwork materials significantly. The system is very well adapted for use alongwith
WRITTEN CONSENT
the L&T-Doka Beam Forming Supporting system.
For greater heights of RC-floors or for heavier floors, Heavy Duty Tower system of staging is adopted.
LABOUR PRODUCTIVITY:
0.8 Manhours per sqm for flat slabs
1.5 manhours per sqm. for beam & slabs
(beams using conventional system).
1.0 manhours per sqm. for beam & slabs
(beams using beam forming support system)
SALIENT FEATURES
• Folding tripod make the system self-standing, eliminating the need for
bracings.
• Flexibility in choice of spacing and arrangement to suit various slab thickness
and building configuration.
• Simple shuttering & de-shuttering operation using services of unskilled
L&T- FLEX
labour resulting in high labour productivity. SYSTEM IN POSITION
FOR CONSTRUCTION OF THE
• Clean, accurate and smooth concrete finish is guaranteed. RC FLOOR FOR A COMMERCIAL
• High material productivity which can be increased by adopting suitable re- COMPLEX BUILDING, PROJECT
EXECUTED BY M/S. BANZAI
propping. ESTATE LTD., CHENNAI
• Ideal for use along with L&T-Doka Beam Forming Support system.
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
R.C.BEAM SIDE
Beam bottom
The plywood sheathing is supported by a layer of secondary H-20 Beams at the designed spacing SECONDARY H-BEAM
to form the beam bottom. The primary H-Beams in turn support the secondary layer.
PRIMARY H-BEAM
SECONDARY
Beam sides BEAMS FOURWAY HEAD
The plywood sheathing is supported by H-Beams at the designed spacing running along the length
PRIMARY BEAM
of the RC-beam to form the beam sides. The H-beams are supported by the beam forming support CT - FLOOR PROP
which are clamped onto the H-20 beams provided for the Beam bottom. The beam forming support H-BEAM FOR
ensures the right angle between the beam bottom and sides. The BFS extn. provides the necessary H-20 BEAM BELOW
BEAM BOTTOM R.C.BEAM
adjustment in depth.
FLOOR PROPS
FOURWAY HEAD
The beam forming support with extension are available in three sizes viz.BFS with extn.600mm
WRITTEN CONSENT
long, 900mm long & 1200mm long.
The system is very well adapted for use alongwith the L&T-Doka Flex & Heavy Duty Tower system.
LABOUR PRODUCTIVITY:
0.8 Manhours per sqm
SALIENT FEATURES
• Eliminates use of timber for beam sides and beam bottom.
• No making is involved for beam sides or beam bottom only plywood is cut
to size and placed.
• Suitable for beam depths from 300mm onwards.
• Easy to assemble align and fix.
• Easy to level and obtain accuracy of dimension. L&T
BEAM FORMING SUPPORT
• Adjustability in depth of beam in 10 mm increments. SYSTEM FOR RC-BEAMS IN USE
• Right angle of side formwork is ensured with respect to beam bottom. FOR THE CONSTN. OF HATTON
NATIONAL BANK, PROJECT
• Facilitates easy De-shuttering. EXECUTED BY M/S. SANKEN
LANKA, COLOMBO.
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
FOR INFORMATION PURPOSE ONLY. NEITHER WE ARE LIABLE NOR
H-16 BEAMS
The L&T Heavy Duty Tower systems is used as staging for heavy floors at large heights or also as
scaffold.
Heavy Duty Basic frames, are braced using standard bracings to form the heavy duty tower system.
The frames are connected one above the other by couplers and pins which ensure verticality. The
towers are provided with tower spindles at the top and bottom for fine adjustments in height / STEEL WALER
deshuttering and levelling . Plan bracings prevent twisting of tower under abnormal loading conditions. U-HEAD
The towers are braced with one another or with the permanent structure at every 6m intervals in height. SHORT PROPS
The Heavy Duty Basic frames are available in heights of 0.9m, 1.2 m or 1.8m. The Heavy Duty Towers
are available in two sizes namely 1525*1525 or 1525*2250 (in plan).
The capacity of each Heavy Duty Tower is 25T. These towers are ideal for heavy loads at large heights, H.D.TOWER SYSTEM
it can also be used for forming Table Formwork ideal for multi storied constructions. The tower in
heights upto 6m can be rolled from one location to another using the transport device. The towers can TOWER SPINDLE
also be handled as a single unit for heights upto 15m as a single unit. FOOT PLATE
WRITTEN CONSENT
For lighter applications in respect of both height and loading, the LIGHT DUTY TOWER system can be
used. Both the heavy and light duty towers can also be used as scaffolding for application like external
finishing works, painting, cladding etc. For specific application of scaffolding, we have the ACCESS
SCAFFOLDING system, which can be used only as designated. Stair towers can also be assembled
using the basic components of the Heavy Duty Tower system.
SALIENT FEATURES
The L&T Wall formwork system is suitable for casting of RC-Walls including water tight structures. UNIVERSAL OUTSIDE FIXING
The plywood sheathing is supported by H-Beams which are in turn supported by the steel walers. The wall H-BEAM
formwork facilitates fixing of working platforms for access, checking of reinforcement, concreting etc., the
LIFTING
panels also have provision for fixing for alignment system which ensure verticality. The pressure due to STD. SPLICE PLATE BRACKET
WORKING
PLATFORM
concrete are sustained by High strength tie system.
UNIVERSAL INSIDE CORNER
STD. STEEL WALER
The walers are available in sizes of 0.8m, 1.2m, 1.6m, 1.8m, 2m & 2.4m the inside corners are formed by PLYWOOD
“universal inside corner” and the outside by universal outside fixing or angle plates. The high strength tie STEEL WALER H16 - BEAM
system can be through tie system or lost anchor system depending on the structure. The H-Beams can be RCC. WALL
butt jointed to form larger size of panels.
ALIGNMENT
SYSTEM
The formwork panel along with the working platform and alignment systems can be lifted as a single unit
using a crane thus the labour involved in each operation of erection and deshuttering is reduced to a 12 MM THK
PLYWOOD
minimum. The panels are formed in the carpentry workshop at site and the number of operations/assembly of TYPICAL C/S OF WALL
components at each location is minimal and hence accuracy is maintained. Since large panels are handled FORMWORK SYSTEM
as a single unit, the damage/loss of small components is eliminated contributing to very high material
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
FOR INFORMATION PURPOSE ONLY. NEITHER WE ARE LIABLE NOR
LABOUR PRODUCTIVITY FOR STRAIGHT WALLS:
• 0.9 manhours per sqm. using crane
• 1.7 manhours per sqm. without crane
LABOUR PRODUCTIVITY FOR CIRCULAR WALLS:
• 1.3 manhours per sqm. using crane
• 2.0 manhours per sqm. without crane
SALIENT FEATURES
• Ideal system for speedy construction
• Wall Panels can be dismantled and handled manually
• Minimises the number of sheathing joints.
• Ensures excellent concrete finish with minimum specialised skill.
WRITTEN CONSENT
L&T WALL FORMWORK
• Large area panels can be handled as a single unit with a crane resulting in high SYSTEM IN USE FOR THE
material & labour productivity. CONSTRUCTION OF LNG
TANK FOR M/S. PUNJ
• Simple shuttering & deshuttering operation. LLOYD LTD., SITE AT
DABHOL.
• Wall Formwork panels facilitate fixing of working platform and alignment system.
• Wall panels can be used along with climbing Formwork system.
WALL FORMWORK SYSTEM
SYSTEM DESCRIPTION: SALIENT FEATURES
The lift shaft platform system is suitable for lift core / RC-walls close to each other.
• Ideal system for speedy construction.
The Climbing Formwork System comprises of shaft main beam resting in pockets provided in the already cast RC-
• Eliminates the need for scaffolding to
Wall. The cross beams are provided over this. Wooden planks over the cross beams form the lift shaft platform.
Leveling of the platform is possible by operation of spindle within the gravity pawls. support the Wall Formwork.
• High levels of safety - fool proof system.
The main beam have gravity pawls which unlocks it self from the pockets when lifted upwards and lock itself at the • Minimum skill & operation for anchoring &
next pocket location. The gravity pawls are hinged and have one way movement only, the platform thus has high shuttering at each level.
levels of safety.
The platform as a whole alongwith the main beam, gravity pawls, cross beams and platform can be lifted as one
unit.
In the Column formwork system the H-Beams along with steel walers and accessories STEEL WALER
LIFTING
makeup the assembly. The Column formwork facilitates fixing of working platforms for BRACKET
WORKING
PLATFORM
access, checking of reinforcement, concreting etc., The formwork panel along with the COLUMN
working platform and alignment systems can be lifted as a single unit using a crane H16 - BEAM
STD. STEEL WALER
thus the labour involved in each operation of erection and deshuttering is reduced to a
minimum. The panels are formed in the carpentry workshop at site and the number of TIE SYSTEM H16 - BEAM
operations/assembly of components at each location is minimal and hence accuracy is
maintained. Since large panels are handled as a single unit, the damage/loss of small UNI. OUTSIDE
FIXING
components is eliminated contributing to very high material productivity. In the absence ALIGNMENT
SYSTEM
of a crane the panels can be dismantled and handled separately. The column formwork
system can handle very large pressures generated due to pumping of concrete. 12 MM THK
PLYWOOD
TYPICAL C/S OF COLUMN
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
FOR INFORMATION PURPOSE ONLY. NEITHER WE ARE LIABLE NOR
• 1.0 manhours per sqm. using crane
• 1.8 manhours per sqm. without crane
SALIENT FEATURES
• Ideal system for speedy construction
• Ensures excellent concrete finish with minimum specialised skill.
• Panels can be handled as two L- shaped units with a crane resulting in
high material & labour productivity.
• Simple shuttering & deshuttering operation.
• Column Formwork panels alongwith working platform & alignment system
WRITTEN CONSENT
can be handled as a single unit.
L&T COLUMN FORMWORK
• Column Formwork panels can be used along with Climbing Formwork SYSTEM IN USE
system. FOR THE CONSTRUCTION OF
FACTORY SHEDS AT
• Minimum size of Column possible is 15 cm x 15 cm. TIRUPUR, TAMILNADU
PROJECT EXECUTED BY M/S.
L&T-ECC GROUP.
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
FOR INFORMATION PURPOSE ONLY. NEITHER WE ARE LIABLE NOR
The L&T- Climbing System are used for tall structures like cooling
towers, etc where it is very uneconomical to provide staging or • Eliminates the need for scaffolding to support the Wall Formwork.
scaffolding for supporting the external or internal wall formwork.
• Three level of Working Platform are available for ease of working.
In this system a bracket is hooked on to anchors called lost • Convenient working space and elbow room available in the climbing
anchors provided in the already cast wall and supports/alignments systems.
are taken from these brackets. The brackets are suitably braced to
prevent any sway and are provided with walkways/working • Varying degree of sophistication available in Climbing Formwork system
platforms / handrails etc for safety and ease of working. depending on site requirements.
• Minimum skill and operation is required for anchoring & shuttering at
Varying degrees of sophistication are available in the each level.
climbing formwork systems, a few of which are as listed.
• Fool proof arrangement for anchoring and safety lock system.
WRITTEN CONSENT
CB - 150 A - Simple Climbing, Crane handled -
platform width 1.50 m. The brackets & wall
formwork are to be handled separately.
CB - 150 F- Travelling Climbing, Crane handled
- platform width 1.50 m. roll back arrangement
for deshuttering & cleaning of shutters. The
wall formwork and climbing bracket are lifted
as one unit.
Automatic climbing formwork, the wall
formwork along with the climbing brackets
slide along the wall using motors, thus
eliminating the need for crane. This system is
very often used for natural draught cooling
towers.
MF - 240 - Simple Climbing, Crane handled -
platform width 2.40 m. these brackets can also
be fitted with automatic climbers SKE-50
which is a hydraulic system with 5T carrying
capacity or SKE-100 with 10T carrying L&T- WALL FORMWORK
capacity. WITH TRAVELING CLIMBING
SYSTEM IN USE FOR THE
CONSTRUCTION OF LNG
TANK FOR M/S. PUNJ
LLOYD LTD., SITE AT
DABHOL.
IS USED WHICH IS NOT FIT FOR THE PURPOSE OF USE. NONE OF THE
FOR INFORMATION PURPOSE ONLY. NEITHER WE ARE LIABLE NOR
The Access Scaffold frames, in heights of 1.8m are braced using standard bracings (H-225 & 2H-
BRACING 2H-225
225) to form the Access Scaffold System. The frames are connected one above the other by CE
FA
suitable couplers and pins which ensure verticality. The towers are provided with tower spindles at ING
IL D SCAFFOLD FRAME
the bottom for fine adjustments in height and leveling. BU
SCAFFOLD BOARD
The system configuration provides for very free and safe working with high productivity. The towers
provide a continuous corridor for working with the bracings serving as hand rails. (There are no
cross members or diagonal bracings that impede free passage or safe working.) This is an ideal
system for scaffolding for heights upto 40m. The width of the working platform is 1m. The scaffold
has to be braced with the permanent structure at every 6m in height. A few advantages of the
system are listed below:
• Economical design.
• Rigid and stable with minimum bracings.
• Height adj. Upto 400 mm is made possible by adj. Spindles at the bottom.
• Easy to erect and dismantle using unskilled labour.
• Towers are available in plan sizes of 1000 x 2250 mm.
WRITTEN CONSENT
• This system has high flexibility in height adjustment and arrangement in plan.
• Well configured for productive working.
SALIENT FEATURES
1200
hSize in plan is only 1525mm x 2250mm.
STAIR BRACKET 225
hCan be used for access upto 100 m in height.
WRITTEN CONSENT
hThe system is very safe and convenient for access.
hLanding at every 1.20 m height.
hStandard units of Heavy Duty Tower System are used
along with few additional components to form the Stair
Tower.
hTower as a whole (6 m high) can be rolled from one
location to another using transport device.
L&T- STAIR TOWER IN POSITION FOR CONSTRUCTION OF LNG TANK AT DABHOL. (DIA
METER OF THE TANK 80M, SHUTTER PANEL SIZE 4M x 3.8M HEIGHT OF TANK 40M)
PROJECT EXECUTED BY M/S. PUNJ LLOYD LTD., NEW DELHI.
shareholder value.
benchmarks.
VISION • L&T shall foster a culture of caring, trust and continuous learning
society.
L&T-VISION