HONGKONG, 7th October, 1889.
DEAR SIR,
In reply to your letter of 17th ultimo inviting us to favour the Board with our views on the Bye-laws, we enclose herewith a draft which contains certain alterations and modifications the chief of which are in clauses 8, 11, 12, 13, 13A and 15.
We do not think these revised laws will be found any less stringent while at the same time they will, we are confident, be found to work better than the old ones.
We shall be happy to give any explanations or reasons that the Board may wish but can hardly embody these in the form of a letter.
Yours truly,
DANBY & LEIGH.
H. MCCALLUM, Esq.,
Secretary, Sanitary Board.
DRAINS FOR NEW PREMISES.
1. Any one about to construct any new drain shall give notice of such intention to the Board, such notice to be in a form of which printed blank copies may be obtained gratis on application at the Office of the Board or at any village Police Station, between the hours of 10 A.M. and 4 P.M.
2. Every notice shall be accompanied by a plan in duplicate on a scale of not less than 20 feet to the inch, and such plan must show the whole of the drains with the sizes figured thereon, and all connections, manholes, traps, ventilators, &c., and a section showing the proposed fall of such drains to a vertical scale of not less than 10 feet to the inch.
3. Within seven days after receipt of the notice and plans, the Board shall by means of a written communication inform the person who has given the said notice whether his plans are in accordance with the Bye-laws and in case of their not being so, suggest such modifications as are necessary to make them comply and it shall not be lawful for any person to commence any new drain until the plans have been passed by the Board and the written notice received which shall be accompanied by one copy of the plan bearing the stamp of the Board and the date, the other copy shall remain filed in the Office of the Board.
4. No person shall lay any pipe for conveying sub-soil drainage in such manner or in such position as to communicate directly or indirectly with any sewer cesspool or drain used for the conveyance or reception of sewage only.
5. No person shall lay any pipe for conveying rain water into any cesspool used for the reception of sewage only.
6. Where any new drain for the conveyance of sewage is to be laid through a wet or damp soil or newly made ground, or where it passes under any building it shall be embedded and encased all round in lime concrete not less than 4 inches thick.
7. No bend or angle (except where unavoidable) to be made in any ventilating pipe or shaft.
8. No inlet to any new drain (except where unavoidable) to be placed inside any building used for habitation.
9. No traps of the kind known as "Bell" or "D" traps to be used, and all traps connected with any drain shall be properly set in cement mortar.
10. No rain water down-pipe shall be used as a ventilating shaft to any drain.
11. Any person who may have built any new drain shall give three clear days' written notice to the Board, on the printed forms to be obtained gratis, that such drain or portion of drain is ready for inspection, and no drain or portion of drain shall be covered in until inspected and passed, written notice of which, must be sent to the person within the three days, and should the drain not be in accordance with the Bye-laws written notice stating in detail in what respect it does not comply with them shall be sent. In special cases it may be permissible to ask for an earlier inspection.
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