Waterproofing works in Laboratory Animal facility,Bio bank and front staircase head rooms of CCE

Amount

Providing and laying APP (Atactic Polypropylene Polymer) modified prefabricated five layer 3 mm thick water proofing membrane, black finished reinforced with non-woven polyester matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrane manufacture of density at 25°C, 0.87-0.89 kg/ litre and viscocity 70-160 cps. Over the primer coat the layer of membrane shall be laid using Butane Torch and sealing all joints etc, and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 650/ 450N/ 5cm. Tear strength in longitudinal and transverse direction as 300/ 250N. Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of membrane shall be got done through the authorised applicator of the manufacturer of membrane : 3 mm thick. Necessary scaffolding or safety arrangement required for completion of work is in the scope of agency. Warranty of minimum 3 years on the entire work is to be given by the agency. During this period of warranty agency shall make good all defects and in case of any defects being found, render the building water and leak proof to the satisfaction of the EIC at Contractor's own cost and shall commence the work for such rectification within seven days from the date of issue of the notice.

Wall water proofing: Cleaning the surface properly with water, removing the dust and loose droppings filling all the visible cracks with Crackseal or equivalent And applying one coat primer of Damp shield elasto and two coat coating of weathercoat Long life 10 or equivalent . There will be 6 hours difference between each coat. Providing and fixing of necessary Scaffolding for completing the work is in the scope of contractor.Quoted rate to include scaffolding. Warranty of 3 yrs for the application of chemical to be provided so that no seepage will be observed.

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