Waterproofing work at terrace of Trauma and other location at AIIMS Raipur

Amount

Repair to plaster of thickness 12mm to 20 mm in patches of area 2.5 sqm and under, including cutting the patch in proper shape, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing mortar, including disposal of rubbish, all complete as per the direction of Engineer-In-Charge.

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Providing & laying for treatment of roof with reinforced elastomeric liquid waterproofing membrane of 400-micron thickness having SRl of 130, tested as per ASTM E 1980 (with Solar Reflectance and Thermal emittance tested as per ASTM C 1549 and ASTM C 1371, respectively). The coating should have water absorption less than 1 % as per lS: 101 (P-7/Sec-1) 1989, with the ability to resist heat upto 120°C as per lS: 101 (P-7/Sec-3) 1990 having VOC less than 1gm/lt as per ASTM D 3960 and should have excellent resistance to transmission of ponded water up to 2.5 bars of pressure for 7- days. It should also be resistant to Ammonia solution, Sodium nitrate, Sodium hydroxide, along with water and soap solution as per ls: 101 (P-7/Sec-2)1990.The waterproofing membrane will be laminated with 25-40 micron thick transparent Nano modified composite crosslinking polymeric coating with a minimum of 40% solid content as per lS:101 (P-8/Sec-6)1993 and also should pass Impact test as per IS:101 (P-5/Sec-3) 1988 along with having dust and water repellent & anti-graffiti property passing Scratch hardness test of 500g as per lS: 101 (P-5/Sec-2) 1988. It should also pass Cross Cut Adhesion test as per lS: 101 (P-5/Sec-2) 1988. The Polymeric coating should have a self-cleaning and easy-to clean property with excellent weather stability and DPR (Dirt pickup ratio). Surface preparation includes pressure wash cleaning to remove all dust, fungus, etc., with pressure washer after repairing the existing roof having old bitumen membrane by filling cracks, potholes. holes with waterproofing compound having compressive strength as per lS-4031 part-6-1988 & permeability of water as per lS 2645-2003. all works as per the instructions of Engineer-in-charge.

Omprakash Agrawal (BID ID -3192377)