THE HONGKONG GOVERNMENT GAZETTE, 27TH SEPTEMBER, 1890.
That surface chanuels be constructed down yards and passages to carry off all surface water from yards
and roofs.
That pipe sewers of comparatively small diameter be laid to take the sewage proper. In the case of yards on which cook houses open a small trap communicating with the sewer should be fixed in the surface channel, so as to take the dry weather flow due to the washing that it is the custom here to do in the back yards.
That all fall pipes for sewage be placed outside the walls and trapped at the foot.
That waste pipes from Baths, Sinks and Lavatories be carried direct through the walls and discharge into open heads.
That a disconnecting chamber provided with a fresh air inlet be constructed at the junction of the private sewer with the Government sewer, and that a ventilating pipe at least 4 inches in diameter be carried up above the buildings at the dead ends. It will also facilitate inspection if manholes are constructed at all bends in your
main sewers.
That the sink stone in the cook houses be placed against the outside wall and the waste pipe deliver into a trap placed in the yard outside.
The position of the cook houses next the Latrines and the European Kitchen above them I consider very objectionable. Latrines should be detached buildings. I shall be obliged if you will consider the foregoing suggestions and submit plaus showing all sewers and surface water channels with the sizes and gradients figured thereon, and also showing all traps, manholes, and ventilators.
Messrs. DANBY AND LEIGH.
GENTLEMEN,
I am, Gentlemen,
Yours faithfully,
(Signed)
FRANCIS A. COOPER.
PUBLIC WORKS DEPARTMENT, HONGKONG,
July 24th, 1888.
951
Re Marine Lots 102 and 103.
Mr. Cooper
Separate System.
I have the honour to acknowledge the receipt of your application for permission to erect verandahs over Letter of Crown Land adjoining the above lots, and beg to inform you that the Surveyor General can only recommend enforcing the such encroachment be allowed on the receipt of a letter from you stating that you will comply with the require- ments in respect of drainage set forth in my letter of March 19th.
Messrs. DANBY & LEIGH.
I have the honour to be,
Sir,
Your obedient servant,
(Signed)
FRANCIS A. COOPER.
admitted to be
Mr. COOPER admits that the existing drains of the City are constructed in a substantial manner, and, that as Existing drains Surface water drains, their construction leaves little to be desired, though they may no longer be suitable as well built. sewers. I may remark, that the Surveyor General, in his letter covering Mr. COOPER'S report, mentions the many miles of modern main sewers constructed, and apparently does not agree with Mr. COOPER that these sewers are unsuitable for the conveyance of sewage, and I quite agree with this opinion.
The objections to the combined system of drains, for the conveyance of sewage, are mentioned in the report Mr. Cooper's as follows:-
•
1.--That the numerous outlets along the Praya render the condition of the foreshore objectionable.
2. That the large sizes of the sewers cause considerable deposit during the dry season.
3. That no efficient means of ventilation exist.
objections to using existing Sewers.
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