Roof treatment of OTM buildings of old DGAR complex at Laitumkhrah Garrison

Hacking of CC flooring including cleaning for surface etc. complete as per direction of the Engineer-in-Charge.

Material and labour for grading roof for water proofing treatment with Cement mortar 1:3 (1 cement : 3 coarse sand).

Providing and mixing water proofing material in cement concrete per 50kg work in doses by weight of cement as per manufacturer's specification.

Providing and laying APP (Atactic Polypropylene Polymer) modified prefabricated five layer, 3 mm thick water proofing 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 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.

Painting with aluminium paint of approved brand and manufacture to give an even shade with two or more coats on new work.

Singh Company