All pipes shall be fixed and tested as building work proceeds. Cutting and chasing shall be kept to minimum. No extra shall be allowed for cutting holes, chases, etc. in walls and floors. 2.4.8 Jointing All joints for CI soil waste &vent pipes conforming to IS-3989 shall be made with malleable pig lead and spun yarn. Pig lead shall conform to IS:782 for caulking. Spun yarn shall be of clean hemp and of good quality. It shall be soaked in hot coal-tar or bitumen and cooled before use. The quantity of lead to be filled per joint in various sizes of cast iron drainage pipes shall be as follows: 50mm dia = 0.75 kg 80mm dia = 0.80 kg dia = 0.90 kg dia = 1.60 kg The joints for all CI centrifugally cast (Spun) iron conforming to IS-1536 and fittings conforming to IS-1538 shall be made with pig lead. The quantity of lead per joint in various sizes of these pipes shall be as follows: 50 mm dia = 1.8 kg 100mm dia = 2.2 kg 150mm dia = 3.4 kg 200mm dia = 5 kg 2.4.9 Testing All soil, waste and vent pipes shall be tested by filling up the whole or part of stack with water. All openings for connections, etc. shall be suitably plugged. Contractor shall remove and replace all pipes having holes, cracks, etc. All leaking joints and access doors shall be replaced or remade to the entire satisfaction of the Engineer- in-Charge. Water shall be retained in stack for a maximum period of 2 hours. After all plumbing fixtures are installed; Contractor shall apply the smoke test to the entire stack to the satisfaction of the Engineer-in-Charge. The test shall be carried out as under. Smoke shall be pumped into the pipes at the lowest end from a smoke machine which consists of a bellow and burner. The material burnt shall be greasy cotton waste which gives out a clear pungent smoke easily detectable by sight as well as by smell if there is leak at any point of the drain.
All pipes shall be fixed and tested as building work proceeds. Cutting and chasing shall be kept to minimum. No extra shall be allowed for cutting holes, chases, etc. in walls and floors. 2.4.8 Jointing All joints for CI soil waste &vent pipes conforming to IS-3989 shall be made with malleable pig lead and spun yarn. Pig lead shall conform to IS:782 for caulking. Spun yarn shall be of clean hemp and of good quality. It shall be soaked in hot coal-tar or bitumen and cooled before use. The quantity of lead to be filled per joint in various sizes of cast iron drainage pipes shall be as follows: 50mm dia = 0.75 kg 80mm dia = 0.80 kg dia = 0.90 kg dia = 1.60 kg The joints for all CI centrifugally cast (Spun) iron conforming to IS-1536 and fittings conforming to IS-1538 shall be made with pig lead. The quantity of lead per joint in various sizes of these pipes shall be as follows: 50 mm dia = 1.8 kg 100mm dia = 2.2 kg 150mm dia = 3.4 kg 200mm dia = 5 kg 2.4.9 Testing All soil, waste and vent pipes shall be tested by filling up the whole or part of stack with water. All openings for connections, etc. shall be suitably plugged. Contractor shall remove and replace all pipes having holes, cracks, etc. All leaking joints and access doors shall be replaced or remade to the entire satisfaction of the Engineer- in-Charge. Water shall be retained in stack for a maximum period of 2 hours. After all plumbing fixtures are installed; Contractor shall apply the smoke test to the entire stack to the satisfaction of the Engineer-in-Charge. The test shall be carried out as under. Smoke shall be pumped into the pipes at the lowest end from a smoke machine which consists of a bellow and burner. The material burnt shall be greasy cotton waste which gives out a clear pungent smoke easily detectable by sight as well as by smell if there is leak at any point of the drain.
TECHNICAL_SPECIFICATION-SANITARY.docx