Content Page: Model Building By Laws

  • Ventilation Of Soil-Water Fittings

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    Where several soil-water fittings are connected to a branch soil-pipe which is provided with a vent connected to such branch soil-pipe immediately short of the farthest soil-water fitting on such branch, and such vent is connected to another vent at a point not less than 150 millimetres above the highest water-level possible in any such…

  • Minimum Drop To Fittings

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    Where a waste-pipe, soil-pipe or private sewer serves two or more sanitary fittings, there shall be a drop of at least 150 millimetres from every such fitting, measured from the invert of the trap outlet to the invert of such waste-pipe, soil-pipe or private sewer.

  • Impervious Floors

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    (1) Every soil-water fitting and every bath shall be placed on an impervious floor. (2) Every shower-fitting shall be placed over a bath or over an impervious flor graded to a waste-water outlet connected through a trap fitted with a grating to the sewer.

  • Electrolytic Action

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    There shall be no connexion between metal pipes and cisterns or tanks of dissimilar metal where, in the opinion of the local authority, such association of dissimilar metals might set up electrolytic action.

  • Support Of Piping And Fittings

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    (1) Strap hangers may be used for all pipes of nominal bore up to 50 millimetres, but ring hangers shall be used for all pipes of greater size. (2) All pipes, except those laid in the ground, shall be securely fixed at frequent intervals to that portion of the wall or other rigid portion of…

  • Size, Fall, Line And Changes In Direction

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    (1) All sewers shall be of a size capable of tanking the discharge into them, calculated in accordance with the relevant provisions of this chapter, with a minimum internal diameter of 100 millimetres. (2) Sewers of 100-millimetre and 150-millimetre diameter shall be laid with gradients lying between a maximum of 1 in 10 and a…

  • Junctions To Sewers

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    (1) Every branch sewer shall join another sewer in the direction of the flow of such sewer at an included angle of 45 degrees and as near as practicable to the invert thereof. (2) All earthenware junctions shall be made by means of ordinary or channel junctions complying with the requirements of C.A.S. No. A16.

  • Joints In sewers

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    (1) All sewer-pipes shall be centred and joined concentrically with the invert on true line. (2) If sewers are constructed of cast-iron socketed pipes, the joint shall be secured to a depth of at least half the socket depth with molten lead, run in one pouring, or with lead wool, properly caulked. (3) If sewers…

  • Sewers On Bad Or Made-Up Ground

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    All sewers on bad or made-up ground or ground producing unequal bearing shall be laid in a manner in all respects satisfactory to the local authority, which shall take into consideration the nature of the ground and the properties of the pipes and joints being used.

  • Sewers Within Or Under Buildings

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    (1) No sewer or part thereof may be laid or may pass, as the case may be, within or under or through a building unless the local authority decides otherwise, having regard to considerations of health and maintenance or other matters relevant to the particular case. (2) Every sewer or part thereof, where it is…