Details: removing / scarifying old tarfelt from slab and preparing the surface smooth and even as per instruction of e/i. grading roof for water proofing treatment with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20mm nominal size) providing and laying app (atactic polypropylene polymer) modified prefabricated five layer, 3 mm thick waterproofing membrane, black finished reinforced with glass fibre matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrane manufactured 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 350/300 n/5 cm. tear strength in longitudinal and transverse direction as 60/80n. softening point of mem
Sector: Mining