CO129-231 - Acting Governor Marsh - 1887 [1-3] — Page 327

Bye-laws made by the Sanitary Board of Hongkong under the provisions of

this

day of

the Public Health Ordinance, in relation to the proper construction, trapping, and ventilating of house-drains, and sewers in the City of Victoria and in the Villages and Rural Districts of Hongkong and Kowloon.

In the City of Victoria.

1. Every owner of a new building within the City or Victoria, shall construct the lowest story of such building at such sufficiently high level as will allow of the con- struction of a drain and of the provision of the requisite communication with any publie sewer into which such drain may lawfully empty, at a point in the upper half- diameter of such sewer.

2. Every owner of a new building within the City or Victoria, shall, in the construction of every drain of such building, use good hard sound pipes formed of glazed stone-ware, thast hall have received the previous approval of the Board. Black bricks shall not be used in the con- struction of any house-drains intended for the conveyance of sewage. Red bricks may be usod, provided they are set and smoothly rendered in mortar of good cement and clean sand.

3. Every owner shall cause every such drain to be of adequate size, and to have an internal diameter of not less than four inches, and where the ground is soft to be laid In a bed of good lime concrete. Every house-drain shall be laid with a proper fall, and with watertight, socketed, joints in cement mortar.

4. No drain shall be so constructed as to pass under any building, except in any case where any other mode of construction may be impracticable. Any drain passing under a building shall be laid in one straight line for the whole distance beneath such building, and shall be com- pletely embedded and encased all round in good and solid lime concrete, atleast four inches thick all round.

5. Adequate disconnexion and ventilation shall be pro- vided at the end of every house-drain, by means of gully- traps, with slop-stone covers or suitable iron perforated covers or gratings, and ventilating pipes, placed at such points and levels, and in such manner as shall in each case be required by the Board, and every inlet to every house- drain, shall be properly trapped and shall be grated, or covered with a perforated stone or iron cover that shall effectually prevent the introduction of any solid substance into such inlet and the perforations or apertures of every such grating or cover, shall be of not less than the sectional area of the pipe or drain to which it is fitted.

6. Every drain from a building communicating directly with, any pablie sewer, shall be provided with a suitable trap ventilating-grating, disconnecting manhole, or other appliance, to the satisfaction of the Board, at a point between such building and such public sewer as shali be pointed out in each case by the Board.

7. No house-drains shall be joined in such a manner as to form any right-angled junction, either vertical or hori- zontal. Every drain shall join another drain obliquely in the direction of the flow of such drain.

8. No ventilating-pipe of any drain shall be of a less inter nal diameter than four inches, and such ventilating pipe shall in every case be securely fixed and so carried up to such height, (provided such height be in no case less than ten feet above the ground), as shall effectually pre- vent any escape of foul air into any thoroughfare or build- ing in the vicinity thereof.

9. No overflow from any cistern or bath, or ablution, sullage, or refuse waters of any kind, nor the surface- druinage of any yard or back-yard shall be led from aoy building or premises, through any down-pipe or open gutter into, or over, any surface-chaunel of any public street, alley, thoroughfare, or other ground, nor shall such refuse waters be led into, or emptied over the surface of any back- yard, alley, or other ground belonging to such building, or premises or other adjoining building or premises, but shall be conveyed in a watertight waste-pipe or dowa-pipe taken through an external wall, and discharged in the open air over & gully-trap covered with a grating or granite slop. stone cover, and no such waste-pipe or down-pipe, shall be brought down any external wall or retaining wall when such wall looks upon any public thoroughfare.

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