Repairing of Roof of Various Quarters on requirement basis under W.J.Area,Moonidih

Item Description/ Heading

Removing of old Tarfelt on Roof upto 5th Floor and Disposal of the same asper the direction of E/I

Grading roof for water proofing treatment withCement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20mm nominal size)

Surface Preparation: Minor cleaning work, removal of loose concrete and filling cracks with polymer modified mortar using SBR. Making of angle fillets all around the periphery of the wall with polymer modified mortar using SRP. Supplying and applying Single component, UV resistant, Zero VOC, Single component Polyurethane Dispersion membrane free from bitumen and tar, Polyuthrene membrane with minimum tensile of >=3.5-4 MPA as per ASTM D 2370, with >400 % elongation As Per ASTM D 2370, >6.5 mm Crack Bridging As per AS- NZ-4548 and >200 N Puncture Resistance as per ASTM E154 The system consists of applying the waterproofing treatment @ 1.8 kg (sq.m. The system includes final base preparation, on primed surface with application @200-250 gms/sq.m. The coating is to be continued to a minimum of 300mm from slab level on to the vertical surface. Actual area treated will be the mode of measurement, with 3 coats, as follows: (1)1st coat 500 Grm/ Coat,(2) 2nd Coat - 800 Grm/ Coat, (3) 50 GSM Geotextile, (4)3rd coat - 500 Grm/Coat

Total impact of GST for the purpose of CTC