Archives: Library Snippets

  • Trapped Dish-Gullies

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    (1) In respect of each dwelling-house, there shall be provided not less than one trapped dish-gully. (2) Such gully shall be set on a base of concrete not less than 150 millimetres thick and having a composition not inferior to 50 kilograms of cement to 65 cubic decimetres of fine aggregate to 130 cubic decimetres…

  • Grease-Traps

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    Where required by the local authority, grease-traps of a size approved by the local authority shall be fitted to take the discharge from every scullery or kitchen sink, and, if they are constructed of earthen-ware, shall comply with the provisions of section 23, but, in any case, grease-traps shall be placed as near as possible…

  • Inlets To Sewers To Be Trapped

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    (1) Trapped gullies shall be so formed and installed as to maintain a water-seal of 60 millimetres, and no other trap shall be placed between a trapped gully and the public sewer. (2) Gully-traps and grease-traps shall be provided with hopper-heads with side and vertical inlets to receive waste-pipes. (3) A hopper-head shall be encased…

  • Waste Water To Discharge Into Trapped Gully

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    (1) Except in the case of a one-pipe system and a single-stack system, all waste water shall discharge into a trapped gully or grease-trap below the grating thereof and above the level of the water therein, which shall be connected to a sewer. (2) No waste-pipe shall discharge into or connect with a gutter, hopper-head…

  • Traps In Soil-Water Fittings

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    Except as is provided for urinals in section 13, every soil-water fitting shall be provided with an approved trap, built integrally with the fitting, but such trap may, with the approval of the local authority, be joined to the fitting if the junction is above the water-line of the trap and the joint is firm…

  • Traps In Waste-Water Fittings

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    (1) Except as permitted in subsection (4), there shall be provided immediately beneath every waste-water fitting an approved trap having a removable cleaning-plug or other approved means of cleaning situated below the water-seal. (2) The nominal bore of such a trap shall be not less than— a) the size of the waste-water fitting outlet to…

  • Single-Stack Systems

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    (1) Single-stack systems may be used under the following conditions— a) all soil and waste branch pipes shall be separately connected to the vertical soil stack; b) the minimum depth of water-seals shall be 75 millimetres for waste-water fittings, and 50 millimetres for soil-water fittings; c) The waste-pipe used in conjunction with a 32-millimetre-diametre trap…

  • Protection Of Waste-Water Traps

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    (1) In the one-pipe system, the water-seal of the trap of every waste-water fitting shall be protected by means of an anti-siphon pipe; Provided that, where horizontal waste-pipes are back-vented as described in section 46,the anti-siphon pipes may be omitted. (2) In the two-pipe system, the water-seal of the trap of every waste-water fitting shall…

  • 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.