Repair and Maintenance of Water Proofing Treatment of roof for 13 Nos B Type Quarters, C 17 to C 40 and D 01 to D 44 at Jyotipuram Colony in Salal Power Station

Amount

Raking out joints in lime or cement mortar and preparing the surface for re-pointing or re-plastering, including disposal of rubbish to the dumping ground within 50 meters lead.

Providing and laying in position cement concrete of specified grade including curing but excluding the cost of centring and shuttering. All work upto plinth level with:1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

Providing and mixing water proofing material in cement concrete work in doses by weight of cement as per manufacturer’s specification. (1 kg of water proofing material in 50 kg of cement)

Supplying and fixing 10 Gauge weld mesh of size100mm x100mm for floor/roof slab concrete screed over the micro beams as reinforcement. The weld mesh shall be fixed as per drawing

Providing gola 75x75 mm in cement concrete 1:2:4 (1 cement: 2 coarse sand: 4 stone aggregate 10 mm and down gauge), including finishing with cement mortar 1:3 (1 cement: 3 fine sand) as per standard design. In 75x75 mm deep chase.

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

12mm Cement plaster of mix: 1 : 4 ( 1 cement : 4 fine sand)

Neat cement punning sqm

Providing and laying APP (Atactic Poly Propylene Polymer ) modified prefabricated five layer water proofing membrane, black finishing reinforced with glass fibre mat consisting of a coat of bitumen primer for bitumen membrane @ 0.40 ltr/sq. mt. by the same membrane manufacture of density at 25°C, 0.87- 0.89 kg/ltr and viscosity 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: 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 authorized applicator of the manufacture of membrane. 3 mm thick water proofing membrane with non-woven polyester matt: Joint strength in longitudinal and transverse direction at 23°C as 650/450 N/ 5cm. Tear strength in longitudinal and transverse direction as 300/250N.

Providing and fixing on wall face un-plasticized Rigid PVC rain water pipes conforming to IS: 13592 Type A including jointing with seal ring conforming to IS: 5382 leaving 10 mm gap for thermal expansion. Single socketed pipes 75 mm diametre

darshana kumari (BID ID -3088734)

M/S Mittal Construction Company (BID ID -3089401)