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and drains, and laying junctions in existing pipe drains, and the
estimated costs of such works are to be paid by the parties
before the application can receive the approval of the Board.
4.—The digging, filling in, and timbering, to be done by
the person making the application, and at his expense, and
twenty-four hours notice must be given at the Office when the
excavation will be finished, so that the workmen employed by
the Hoard may be sent, and an officer attend to see that the
works arc properly executed.
5.—The person- making application are to watch and light
the work as long as there may be any opening or heap of earth
or other obstruction in the public way, and are to be responsible
for all accidents that may occur from whatever cause.
6.—The drains arc to consist entirely of glazed stoneware
pipes, free from defects, with well-fitting joints made water-tight
with Portland cement, and to be not less than the following
thicknesses, viz.:—6-inch pipe, ¾-inch; 9-inch pipe, 1-inch;
12-inch pipe, ¾-inch. No drains to be covered up until
examinee! and approved by the Surveyor.
7.—AH drains and soil pipes shall, as far as possible, be
kept outside the houses.
8.—They shall be laid evenly with a regular gradient from
the sewer upon a bed of concrete or other suitable solid
foundation.
9.—The main drain shall, where practicable, be disconnected
from the sewer by an approved interceptor.
10.—The drains shall, where practicable, be ventilated by a
fresh air inlet placed in the main drain as near as possible to
the interceptor, and, by outlet shafts of not less than three-anda-half
inches in diameter, prolonged directly upwards from the
soil pipes outside the house to the highest point of the roof, or
at least three feet above the top of the highest window.
11.—An inspection chamber shall, where practicable, be
provided between the interceptor and the fresh air inlet.