ROOF REPAIRING AND WATER PROOFING WORK AT RAJIV GANDHI NAGAR COMMUNITY HALL IN WARD NO. 52

CEMENT CONCRETE GRADE M-15 (NOMINAL MIX WITH 20MM MAXIMUM SIZE OF STONE AGGREGATE)- GRADING ROOF FOR WATER PROOFING TREATMENT WITH:

PAINTING WITH BLACK ANTI-CORROSIVE BITUMASTIC PAINT OF APPROVED BRAND AND MANUFACTURE TO GIVE AN EVEN SHADE: TWO OR MORE COATS ON N EW WORK."

PROVIDING AND LAYING APP (ATACTIC POLYPROPYLENE POLYMER) MODIFIED PREFABRICATED FIVE LAYER 3MM THICK WATER PROOFING MEMBRANE, BLACK FINISHED REINFORCED WITH NON- WOVEN POLYESTER MATT CONSISTING OF A COAT OF BITUMEN PRIMER FOR BITUMEN MEMBRANE @ 0.40 LTR/SQM. BY TH E SAME MEMBRANE MANUFACTURE OF DENSITY AT 25°C, 0.87-0.89 KG/LTR AND VISCOCITY 70- 160 CPS. OVER THE PRIMER COAT THE LAYER OF MEMBRAN E 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 SH ALL BE UPTO -2°C WHEN TESTED IN ACCORDANCE WITH ASTM, D - 5147. THE LAYING OF MEMBRANE SHALL BE GOT DONE THROUGH THE AUTHORISED APPL ICATOR OF THE MANUFACTURER

PAINTING WITH ALUMINIUM PAINT OF APPROVED BRAND AND MANUFACTURE TO GIVE AN EVEN SHADE - TWO OR MORE COATS ON NEW WORK