A.D. 1901.]
PUBLIC HEALTH.
[No. 10.
927
extremity with a bend, shoe, or pedestal pipe. All joints of stoneware pipes shall be made in the manner provided by By-Law 5.
NOTE.—Zinc, tin-plate, riveted, or lap-jointed sheet-iron will not be approved.
31. Waste-pipes, as well as down-pipes from roofs, shall not be connected direct with any drain, but shall discharge in the open air near to or over a trap, and they shall be brought down to within one foot or less from the ground.
32. No rain-water pipe from the roof of a building shall be used as a ventilating shaft to any drain which communicates, or is designed to communicate, with a public sewer.
NOTE.—Rain-water pipes terminate at the eaves of the house, a point not high enough above windows to be a safe ventilating outlet.
33. Any person who may have laid any drain or constructed drainage works connected therewith shall not cover up such drain or works until the same has or have been previously inspected and passed by the Board, and such person shall give three clear days' written notice to the Board that such drain or work is or are ready for inspection, and such notice shall be delivered at the office of the Board in a form of which printed blank copies may be obtained gratis, in English and Chinese, on application at the office of the Board, or, in the case of a Village, at any Village Police Station, between the hours of 10 a.m. and 4 p.m.
34. Before any drain is covered in, it shall be inspected and tested to ascertain whether it is water and air-tight; and no drain that fails in this respect shall be passed. After inspection, the earth shall be carefully filled in, above and around the drain, and thoroughly rammed and consolidated. For a depth of at least six inches above the summit of the sockets of the pipe, selected material, free from stones larger than will pass through a 2-inch ring, shall be used in filling in the trench.
Mode of discharge of waste-pipe and down-pipe.
Prohibition of rain-water pipe being used as ventilating shaft.
Prohibition of new drain or drainage works being covered up until inspected and passed by Board.
Drain to be water and air tight.
35. The floors of cook-houses, stables, cow-sheds, and the like, where practicable, shall be elevated above the ground outside the dwelling, and be provided with surface channels, passing out through the wall, and delivering above a trapped gully, outside. When new drains are being laid and where the floor is at the level of the ground outside, the surface-channel of the cook-house shall be connected to a trap, outside the house, by a straight open pipe, terminating above the water-level of the trap, which shall be accessible and in free communication with the air.
36. The floors of cook-houses, latrines, privies, and backyards shall be paved with some impervious and durable material, such as granite setts or vitrified bricks, laid on a bed of good concrete not less than four inches thick, and pointed with good mortar, or with good concrete laid in a bed not less than six inches thick and rendered with cement, and shall have a fall from the walls to the outlet of at least an inch to the foot.
Paving of floor of cook-house, etc.
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