ADDN/ ALTRN OF CERTAIN OTM ACCN (P-543 TO P-546, P-601 AND P-669) AT CME UNDER GE (CME)

Disconnecting existing tanks, setting aside (or lowering if required) for repairs, cleaning etc and hoisting if required reconnecting and re-fixing in position(cleaning repairing etc measured separately) capacity exc 500 & n.exc 1000 ltrs complete all as specified and directed.

Dismantling of water tanks and removing to store of capacity exc 500 & n.exc 1000 ltrs, complete all as specified and directed.

Supply and fixing rotational moulded polyethylene water storage tank(Triple layer), cylindrical vertical with closed top, 750 litres capacity, hoisted and fixed in position,including brass ball valve, high pressure, 20 mm dia, with polyethylene float and fly nut, screwed for iron pipe or brass ferrule and fixed, complete all as specified and as directed. complete all as specified and as directed.

Supply and fixing in repairs brass ball valve, high pressure, 20 mm dia, with polyethylene float and fly nut, screwed for iron pipe or brass ferrule and fixed, complete all as specified and as directed.

Demolition of cement concrete in roofs, floors (other than ground floors), beams, staircases, landings, chajjas, and similar suspended structures, including removal of waterproofing treatment in any number of layers, and disposal of debris to a distance exceeding 250 m and not exceeding 5 km from the site, complete, as specified and as directed.

Material and labour for laying 10 mm thick screed bed on concrete roof surfaces, in cement mortar 1:3, finished fair and even, without using extra cement by incorporating Dr. Fixit (or Techno-commercial Equivalent approved) at 3% by weight of cement content. The work shall include all necessary materials, tools, and labour for Complete all work as specified and directed by the Engineer-in-Charge. Note: Water proofing compound shall be measured and paid seperately.

M&L Cement concrete Type-B0 (1:2:4) using 12.5 mm graded stone aggregate in roof padding, laid to required slope, including mixing, laying, ramming, watering, curing and finishing the surface fair and even, complete all as specified and directed

M&L for APP-based modified pre-fabricated five-layer waterproofing membrane, 3 mm thick and weighing not less than 3.6 kg/m², reinforced with polyester non-woven fabric mat (160 g/m²), black finished. The surface shall be primed with compatible primer conforming to IS 3488 @ 0.30 L/m² and IS 17029 bonding material 85/25 bitumen @ 1.2 kg/m² before and after laying.The membrane shall be laid by torch method with side overlaps of 75 mm and longitudinal overlaps of 100 mm. At junctions of roof and parapet walls, a groove of 20 × 20 mm shall be provided at a height of 100 mm, into which the membrane shall be inserted and sealed with bituminous mastic. All overlaps/joints shall be sealed with hot 85/25 bitumen. Finally, two coats of waterproofing aluminium paint shall be applied over the APP membrane. Work to be executed as per specifications and directions of Engineer-in-Charge.

M&L for applying liquid membrane waterproofing on roof surface, complete, using approved polyurethane-based liquid membrane system, applied as per manufacturer’s specifications, specified below and as directed.