SUMADHURA INFRACON PVT.
LTD Format No: SIPL/QAQC/MS/24
Method statement Rev No: 0
Ledge wall construction Date:
S.No. Description Records Responsibility
1.Health & Safety
The following personal protective equipments shall be used
a) Helmet
1.1 Safety Induction record Safety Er/Site Er
b) Safety shoe
b) Hand gloves
2. Machinery/Equipment
The following equipment/machinery shall be used
Preventive maintenance
a) Angle grinder, Spirit level
plan, Tools inspection
2.1 b) Laser level machine, measurement tape PM
format, Calibration
c) Air blower, Water level
records
d) Masonry & Carpentry tools
3.Materials & tools
The following materials & tools shall be used
a) Concealed flush tank - Approved make with accessories
b) Concrete ingredients like Coarse & fine aggregate, M.Sand, Approved list of
3.1 OPC 53 grade cement, Burnt clay bricks/Light weight AAC materials, Approved list QC Er.
blocks of vendors
c) Hammer, Nylon thread, red oxide paint, nails etc.,
d) Drilling machine, spirit level, plumb bob, hand tools etc.,
4. Work procedure
4.1 Material inspection & storage
Concealed flush tanks of atleast 03nos must be inspected from
each consignment for physical damage, accessories etc.,
Accessories include HDPE Water closet connection set, HDPE
4.1.1 connector bend & adapter sleeve, HDPE inlet connector with Delivery Challan QC Er., Store Incharge
lip seal, HDPE connection clips, galvanised steel rods, Nuts &
covers. Upon satisfaction, stamp QC PASSED seal on Delivery
challan
All concealed tanks entering site premises shall be unloaded
4.1.2 only after QC check & stamping QC PASSED seal on the Delivery Challan QC Er., Store Incharge
Delivery Challan or invoice
All corresponding QC checks as mentioned in
Inspection/Material test Plan (ITP/MTP) must be conducted & Material inward register
4.1.3 QC Er., Store Incharge
records must be maintained for the same. All material delivery & Test reports
must be captured in QC & Store material inward register
Storage condition of aggregate, cement must fulfill the
requirements as mentioned in material storage
4.1.4 Material storage plan Store Incharge
instruction/plan. Refer to manufacturer instruction for storage
of Concealed flush tanks.
4.2 Prerequisite
Pressure testing (at 10.5 bar) of plumbing lines, installation of
4.2.1 Horizontal sewer networks inside toilets & toilet floor screed - Site Er., QC Er.
must be completed. Verify records/checklist available or not.
Once agian check the allowance provided/available for wet
area, ledge wall & wash basin area is sufficient & as per site
4.2.2 - Site Er.
management decision. Any deviation shall be escalated for
further discussion & proper solution
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SUMADHURA INFRACON PVT. LTD Format No: SIPL/QAQC/MS/24
Method statement Rev No: 0
Ledge wall construction Date:
S.No. Description Records Responsibility
4.3 Work procedure
A Surface preparation
Ensure the area is free of foreign materials, ply pieces, cement
bags, staging material etc., Toilets must have sufficient
4.3.1 - Supervisor
lighting. If not arranements for artifical lighting must be done
prior to start of work.
B Installation
Just prior to installation, read the instruction provided along
with the concealed tank in addition to this method statement
4.3.2 Mfg. recommendation Site Er., QC Er.
(As possibility is there for variation in installation procedure).
Any variation found, supplier instruction must be adhered to
4.3.3 Ensure sub contractor is having appropriate tools for the job Ledge wall - Checklist Supervisor
Mark in red oxide the location of anchor points as shown in
instruction by supplier & drill holes with appropriate diameter
4.3.4 drill bit to required depth & insert PVC fischers provided inside -do- -do-
the hole. Ensure while marking, that centre of soil pipe is
220/230/250mm from FFL as per mfg. specification
Bring out the concealed tank frame in line with the markings.
Unfold the anchor cleats & place it such that slot provided &
4.3.5 hole made in masonry match each other & secure/hold the -do- -do-
tank in position with temporary support at bottom. Check
with spirit level at top of tank to ensure tank held in level.
Once tank is leveled, place screws provided in the slots &
tighten. Once all the screws are tightened remove temporary
4.3.6 supports & confirm the setup is stable & rigid. Again check -do- -do-
whether the tank is in level after removal of temporary
supports
Fix HDPE connection clips to the frame, followed by HDPE
connector bend & adaptor sleeve. Tighten & close the
4.3.7 connection clip setting the connector in line with the bore in -do- -do-
floor. Use collar & appropriate solvent to connect the UPVC
sleeve & connector.
Remove thermocoal cushioning below tank & tighten counter
4.3.8 commoded fixation screws in the location provided in frame. -do- -do-
Also fix vertical support frames if any provided in the kit
Fill the concealed tank with water, as there is chance for
4.3.9 mortar droppings during ledge wall construction, which might -do- -do-
choke the water passage inside tank.
Unplug the end cap in flush water line & fill the line with water
& check if there is any blockage before connecting it to tank
4.3.10 flush valve. Apply insulation tape to male thread part in flush -do- -do-
valve connection & thread tightly the CPVC flush water line
with concealed tank unit.
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SUMADHURA INFRACON PVT. LTD Format No: SIPL/QAQC/MS/24
Method statement Rev No: 0
Ledge wall construction Date:
S.No. Description Records Responsibility
C Concrete & Masonry works
Once installation is complete. Fill the gap below tank & frame
4.3.11 with M10 grade concrete to act as counter weight to Ledge wall - Checklist Supervisor
commode.
Fix Fibre chicken mesh all around the tank (plastic portion & GI
4.3.12 portions with block adhesive, in order to aid bonding with -do- -do-
masonry members. Use brick/light weight blocks as surround
Fill the gap below concealed tank frame with block/brick work.
Depending upon the size (width) of frame & tiling pattern
4.3.13 above ledge wall, frame sides shall be fixed with block/brick -do- -do-
work or plastering only. Make scribling on face of plaster to
aid good bonding with tiles
Offer QC insepction after plastering. QC Er. shall check
4.3.14 verticality & right angle of all faces & top of ledge wall after -do- Site Er., QC Er.
plastering.
Above mentioned procedure, if any needs compromise, same
shall be discussed with Project Director and approval has to be
4.3.15 -do- PM, Site Er, QC Er.
obtained through site instruction register. Copy of same shall
be attached to checklist & intimated to HO.
Prepared by Reviewed by Approved by
S.Suresh Kumar Bubesh Kumar Babu Bharat Kumar Kandukuri
Head - QA/QC COO - Technical Director - Operations
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