Name of Work: Providing & laying Waterproofing treatment of roof for 12 Nos SFA quarters of SSB at Sector-16B, Dwarka, New Delhi.
Sl. No.
Item Description
1
Providing gola 75x75 mm in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 10 mm and down gauge), including finishing with cement mortar 1:3 (1 cement:3 fine sand) as per standard design: In 75x75 mm deep chase
2
Demolishing brick tile covering in terracing including stacking of serviceable material and disposal of unserviceable material within 50 metres lead
3
Demolishing mud phaska in terracing and disposal of material within 50 metres lead.
4
Disposal of building rubbish /malba / similar unserviceable, dismantled or waste materials by mechanical means,including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.
5
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 adjoiningwalls upto 300 mm height including cleaning the surface before treatment.(b) Laying brick bats with mortar using broken bricks/brick bats 25 mmto 115 mm size with 50% of cement mortar 1:5 (1 cement : 5 coarsesand) admixed with water proofing compound conforming to IS: 2645and approved by Engineer-in-charge over 20 mm thick layer of cementmortar of mix 1:5 (1 cement :5 coarse sand) admixed with water proofing compound conforming to IS: 2645 and approved by Engineer-in-chargeto required slope and treating similarly the adjoining walls upto 300 mmheight including rounding of junctions of walls and slabs.(c) After two days of proper curing applying a second coat of cement slurryusing2.75 kg/ sgm of cement admixed with water proofing compound conforming to IS : 2645 and approved by Engineer-incharge.(e) The whole terrace so finished shall be flooded with water for a minimumperiod of two weeks for curing and for final test. \"All above operations to bedone in order and as directed and specified by the Engineer-in-Charge\":22.7.1 With average thickness of 120 mm and minimum thickness at khurra as 65 mm.(d) Finishing the surface with 20 mm thick jointless cement mortar of mix1:4 (1 cement :4 coarse sand) admixed with water proofing compoundconforming 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.
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