B-1 AGREEMENT System Generated e-Tender No ... - e-Tendering

98 Dy. Executive Engineer
General Guidelines for Waterproofing Work
For reference of contractor
(Note:- The contractor is required to give detailed specification for each item of waterproofing work)
1. Roof, slab and terrace:
Providing average 112 millimetre thick cement based Indian waterproofing treatment with
Brick Bat Coba beading by Keeping the treatment minimum 75 millimetre thick at the rain
water pipe point and keeping the gradient not flatter than 1 in 100.
(a)
Cleaning the surface to the requirements.
(b)
Giving a coat of wash mixed with cement.
(c)
Providing 12 millimetre thick cement mortar bed with admixture of waterproofing compound to
form a bed for brickbats. Special care shall be taken at the junction of parapet and terrace
slab to ensure gaps, if any are properly sealed.
(d)
Pacing brickbats of varying size (average 80 millimetre thick) to proper slope and grouting
their joints with chemical process in cement mortar with 2% of waterproofing compound.
(e) Providing all around the terrace large waterproof watta (roundings) upto a height of 30
centimetre PCC or as directed above the finished level of waterproofing treatment.
(f) Finishing: Finishing the top surface with average 20mm thick layers of cement mortar 1:3
dded with jute fibre at one kilogramme per bag, including finishing the surface smooth with
cement slurry mixed with approved waterproofing compound, marking finished surface with
false squares of 300mm x 300mm.
(g)
Curing: Curing shall be done for 14 days. Curing of tops surface shall be done by making
base (wattas) with lean cement mortar to keep water standing on the surface.
(h)
Carrying out the test: The test shall be carried out by ponding method. Payment for the item
shall be released only after results of pond test are satisfactory.
2. Toilets:
(a) Cleaning the surface to the departments requirements.
(b) Giving a coat of wash mixed with cement.
(c) Providing average 15 cm thick waterproofing treatment to the bottom of toilet floors.
(d) Providing 20 mm to 25 mm thick cement mortar water proof treatment to the walls of toilets
upto the height of 0.30 metre above the finished floor level.
Signature of Contractor No. Of Corrections Executive Engineer