1001
PUBLIC IIEALTH . [ 24 of 1887. ]
Q. Complete ventilation is especially important when any part of the house
drain system is in communication with the interior of the dwelling ; or where
the system is extensive and has numerous inlets. It is essential where water
closets are uscil, or where the drains receive excrementitious matter. In the
case of a short length of drain, leading from a single inlet, placed in an open
space, such as a back -yard, though desirable, it is less necessary and may be
omitted without serious danger.
R. Any direct communication between the interior of the house and the
house-drain should be avoided. Pipes carrying water from baths or sinks,
within the dwelling, should therefore deliver their effluent above trapped
gulleys, in the open air. The effluent from bathis or sinks, on upper storeys
should, whenever practicable, be received by open-topped pipes, delivering
freely above trapped gulleys at or a little below the growd-level. If, as in
the case of water -closets, a direct communication has to be made between a
fitting insiile the liouse and the drain, then there must be complete ventilation
by means of a pipe carried up outside and to the top of the building.
BYE - LAWS.
1. Any owner or occupier of private premises about to construct any new Notices.
drain , shall give at least seven days' previous written notice of such intention
to the board, 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 the villages
—at any Village Police Station, between the hours of 10 A.M. and 4 P.M.
2. Every such notice shall specify the name of the street, the number of notices
Nature, of
the lot and the number of the house if any, which it is intended to drain and
shall be accompanied by a plan in duplicate of the premises drawn on a scale
of not less than twenty feet to the inch, and such plan must show the whole
of the new drains with their proposed sizes figured thereon, and a section or
sections showing the proposedl falls or inclination and drawn to the same scale
and to a vertical scale of not less than ten feet to the inch . The plan must
also show the position and course of all proposed surface gutters.
Except that in case of suburban lots which cannot be conveniently included
within a plan of ordinary dimensions, when the lot and the out-fall drain may
be shown on a scale of not less than one hundred feet to the inch .
3. Within seven days after receipt of the notice, the sanitary surveyor Approval of
shall, by means of a written communication, in English or Chinese as may be pans,& c.
necessary , inform the person who has given the said notice whether his designs
and proposed mode of construction are approved or disapproved, and in case
of disapproval such modifications or improvements as may be requisite in order
to comply with the provisions of Ordinance No. 24 of 1887 and of any bye
laws made thereunder shall be indicated in detail to such person by the
sanitary surveyor, and it shall not be lawful for such person to commence the
new drains until the approval thereto of the sanitary surveyor shall have been
previously obtained by him , and in the case of such approval one copy of the
deposited plan shall be returned to him , and the remaining copy shall remain
filed in the office of the sanitary surveyor.
NOTE.— The approval of plans conveyed by the sanitary surveyor under this bye-law
certifies simply to the fact that the plans are in accorlance with the Public Health Ordi
nance and with the bye- laws made thereunder but signifies no approval of the sufficiency
or otherwise of the plan and throws no responsibility on the board.
4. Any person carrying out excavations for new drainage works on any Lighting excava
premises contiguous to a public thoonghfare whereby the safety of the public tions, & c.
may be jeopardized, shall light such excavations by means of a lantern or
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