Specifications Part 1 - Water Supply, Sewerage and Tube Well Works

1.12.7 Caulking may be done with pneumatic tools or with a hand hammer weighingnot less than 2 kg. When working with lead wool, it is very important to usecaulking tools of appropriate thickness to fill the joint space, and to thoroughlyconsolidate the material from the pack to the front of the socket. Lead run jointsshall be preferably finished 3 mm behind the socket face.1.13. Detection of Cracks in Pipes :1.13.1 The pipe and fittings shall be inspected for defects and be rung with a lighthammer preferably while suspended to detect cracks. Smearing the outsidewith chalk dust helps the location of cracks. If doubt persists furtherconfirmation may be obtained by pouring a little kerosene on the inside of thepipe at the suspected spot; if a crack is present the kerosene seeps throughand shows on the outer surface.1.13.2 If a pipe is mishandled either accidentally or due to carelessness duringunloading or lowering it should be thoroughly inspected before laying andshould be rejected if found unsuitable.1.14 MeasurementThe net length of pipes as laid or fixed shall be measured in running meterscorrect to a cm. specials should be excluded and enumerated and paid forseparately. The portion of the pipe within the collar at the joints shall not beincluded in the length of pipe work.1.15 Rates:The rate shall include the cast of the material and labour involved in all theoperation described in the item.Urban Administration & Development Department Page 24