Horizontal Areas (Below Raft): Supplying and installing 1.2mm thick self-adhesive HDPE membrane, Dr. Fixit or equivalent Pre Bond having puncture resistance of 800N (as per ASTM E 154) and hydrostatic head resistance not less than 60m head of water (ASTM D 5385).The system should be fully bonded to the RCC and consists of highly resilient HDPE film, self-adhesive polymer layer and a trafficable granular layer. The membrane shall have minimum of 75mm side and end laps which shall be sealed with double sided adhesive tape. All vertical surfaces will be fixed using prefixed gaskets/shot gun. The size of the membrane should not be less than 2.4Mtr. x 20 Mtr. to minimize the joints and the entire waterproofing treatment should be guaranteed by the principal manufacturer as a system, for ten years,
