791
71. Traps for gulleys connected with the street A suitable type of trap- ped gulley to be evolved.
sewers wanted.
72. More trapped sewer-gulleys required near the foot of downpipes where side channels are nearly level.
74. Scavenging of street sewers, drains and nul- 92.jlahs to be under direction of Medical Officer
of Health.
Extensions, alterations and new works to be executed as now by Public Works Department.
75.. Sewer-vents, not ventilation desirable in
many places.
Ventilation of Sewers.-Ventilation by grating in man-hole-covers or by untrap- ped gulleys, objectionable.
77. Application of combined ventilation of
house and street sewer to Hongkong.
78. Sewer-ventilation.-Tentative procedure re- commended. Suggests nature of experi- ment that might be tried in one district.
82. Sewer Pipes for house sewers.
Advisable
to inspect and test them before use.
83. Tests required explained.
84. Tests to be made at a depôt.
85. Standard of quality to be established.
86. Fee for inspection of house-sewers.-Re- commends $10 for every inspection ne- cessary beyond the first.
87. Cast iron house-sewers recommended-
They should be coated with Dr. ANGUS SMITH'S composition.
88. Cast iron down-pipes and ventilating pipes
to be made compulsory.
89. Ventilation of house-sewers.
90. House-sewer construction.-Improvement
required.
Type devised by the Director of Public Works is suitable. 1,400 required. Proposed to insert $42,000 on 1903 Estimates.
Adoption of new gulleys will probably render this unnecessary.
Being arranged.
New gulleys will all be trapped.
Will be adopted wherever practicable.
Noted for guidance.
When Standard Specification received from Mr. CHADWICK it is proposed to refer it to the Green Island Company asking if they are pre- pared to guarantee to turn out goods in accordance with it. A small consignment of Standard goods will be imported.
Provision made under the new Buildings and Health Bill.
Adopted in new Buildings and Public Health Bill.
Drainage Bye-law No. 25 requires ventilating pipes to be of iron; proviso to Bye-law 28 re- quires down-pipes abutting on streets to be of iron but allows down-pipes in private yards to be of glazed stone-ware. This is considered to meet the requirements of the case.
Dealt with in No. 77.
Awaiting the "Instructions for construction of House-sewers" referred to therein.
Drains, Storm-water Channels and Nullahs.
91. Covered-drains, surface water channels or nullahs objectionable, but if covered should be
easy of access for a inan. They should be avoided at Kowloon and in the New Territory.
93. Drainage System to be completely revised.
Noted for future guidance.
It
may be possible to take this up in about 18 months' time.
No comments yet.
Private notes are available after approval.