Special Repairs to the roof slabs of Type-III and IV quarters at DRDO residential complex, Jagdalpur.

Amount

Removing of existing tarfelt and cleaning the surface by wire brush to remove all loose material, dust, dirt, grease etc., to receive the new treatment including disposal of unserviceable material with a lead of 1 KM etc.

Providing and laying integral cement based water proofing treatment 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 300 mm height including cleaning the surface before treatment. (b) Laying brick bats with mortar using broken bricks/brick bats 25 mm 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 20 mm 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 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 20 mm thick jointless cement mortar of mix 1:4 (1 cement :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 pattern of 300x300 mm square 3 mm 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 : (a) With average thickness of 120 mm and minimum thickness at khurra as 65 mm.

Disconnecting damaged overhead/terrace PVC water storage tank of any size from water supply line and removing from the terrace including shifting at ground level as per direction of Engineer-in-charge.

Dismantling 15 to 40 mm dia G.I. pipe including stacking of dismantled pipes (within 50 meters lead) as per direction of Engineer in-Charge.

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.

Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc.

20 mm Dia Nominal Bore.

25 mm Dia Nominal Bore.

40 mm Dia Nominal Bore.

H.P or L.P ball valve with polythene floats : 25mm.

Brass full way Valve with C.I wheel (Screwed end) 40mm dia.

Brass full way Valve with C.I wheel (Screwed end) 25mm dia.

25mm gunmetal gate valve with wheel.

Credit item:- (Only numeric value should be quoted, the (+) or (-) sign should not be added before the quoted amount for below mentioned items).

Water storage tank.

Dismantling 15 to 40mm dia G.I pipe.

H.P or L.P ball valve with polythene floats : 25mm.

Valves.

SANGEETA ENGINEERS

S R GAVISH BUILDTECH PVT LTD

SHRAYA ASSOCIATES

S K Residency Group

Archana Associates

Vaibhav Laxmi Enterprises