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

Branch(i) A special form of cast iron pipe used for making connections to water mains.The various types are called T,Y,T-Y, double Y, and V branches, according totheir respective shapes.(ii) Any part of a piping system other than a main.Caulking:(a)(b)The process of driving, pouring or forcing lead, oakum, plastic or othermaterial into a joint to make it leak proof.The material used in the caulking process.Caulked Joint:A spigot and socket joint in which the jointing material is compacted by meansof caulking tool and hammer.Channel:Chase:The open waterway through which sewage, storm water or other liquid wasteflow at the invert of a manhole or an inspection chamber.A continuous recess in wall, floor or ceiling for the purpose of holding pipes andconduits.Cleaning Eye:An access opening having a removable cover to enable obstructions to becleared by means of a drain rod.Connections:The junction of a foul water drain, surface water drains with public sewer,cesspool soak-way or other water courses.CollarA pipe fitting in the form of a sleeve for jointing the spigot ends of two pipes inthe same alignment.Coupling:A pipe fitting with inside threads only, used for connecting two pieces of pipe.Craze or Crazing:Fine cracks in the glaze.Cross:A pipe fitting used for connecting four pipes at right angles:Curb, kerb:The stone margin of a side walk.Depth of Manhole:The vertical distance from the top of the manhole to the outgoing invert of themain drain channel.Urban Administration & Development Department Page 2