Content Page: 9 Drainage and Sewerage

  • Vents: General

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    (1) Every soil-pipe, waste-sewer and sewer, including every branch thereof which exceeds six metres in length, measured from its junction with a ventilated private sewer or a ventilated soil-pipe to its point of connexion with the soil-fitting which it serves, shall be provided with a ventilation-pipe leading up-wards from its highest convenient point. (2) Every…

  • Minimum Size Of Pipes, Etc

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    Subject to the provisions of sections 36 and 37, no soil type, private sewer or waste-sewer shall be less than 100 millimetres in diameter: Provided that a waste-sewer not exceeding 4,6 metres in length or a soil-type serving urinals or bidets may be less than 100 millimetres but not less than 50 millimetres in diameter.

  • Capacities Of Vertical Pipes

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    Every vertical pipe shall be of such a diameter that- a) the rate at which sewerage flows through such pipe at any point does nnot exceed the rate shown for the pipe of that diameter in column 2 or column 3 of Table VI, whichever is applicable; and b) the rate at which sewage enter…

  • Capacities Of Horizontal Pipes

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    Every horizontal pipe or sewer having a diameter set out in column 1 of Table V shall be deemed to have a maximum discharge capacity set out in column 2 for such pipe and set out in columns 3,4,5 and 6 for such sewer, and the aggregate rate of discharge of all sanitary fittings discharging…

  • Distinction Between Horizontal And Vertical Pipes

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    For the purpose of the provisions of this Chapter, any pipe which is inclined to the horizontal at an angle of less than 45 degrees shall be deemed to be a horizontal pipe, and any other pipe shall be deemed to be a vertical pipe.

  • Rates Of Discharge From Sanitary Fittings

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    Any sanitary fitting with an outlet of a diameter referred to in column 1 of Table IV shall be deemed to discharge sewage at the rate stated for such sanitary fitting in column 2 or column 3 of such table, which ever is applicable. TABLE IVTABLE V

  • Discharge Units

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    (1) For the purposes of this section, the rate at which sewage is discharged into, or at which it flows through, a pipe or sewer shall be measured in units which are herein referred to as “discharge units” (abbreviated reference d.u) (2) The rate at which sewage flows through a pipe or sewage flows through…

  • Solder

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    Solder used for plumbing shall comply with the requirements of C.A.S. No H3, Soft solders

  • Asphaltic Compound

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    Asphaltic compound used for joints shall not- a) be brittle at normal temperature; nor b) soften sufficiently to destroy the effectiveness of the joint when subjected to a temperature of 70°C; nor c) be soluble in any of the wastes carried by the sewerage system.

  • Jointing

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    Jointing of sewers and fittings shall be made- a) with materials approved for use with the particular material of which the sewers and fittings are made; and b) in such a manner as- (i) to prevent leakage from the joint; and (ii) where necessary, to allow some moment of the joint.