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(6.) The drains on the premises shall be laid in straight lines wherever
possible and with an even and regular inclination from the lowest level
upwards, to the approval of the Officers authorised by tho Vestry.
(7.) Each house shall have a separate drain in direct communication with a
sewer unless express consent from the Vestry has been obtained for combined
drainage.
(8.) So much of the work as may be necessary for the connection to the
sewer to the extent of a flap trap (if required), and six feet of pipe will be
constructed by the Vestry's Contractor, at the expense of the owner, and such
an amount as shall be required by the Vestry's Engineer and Surveyor must be
paid as deposit, previous to the commencement of the work.
(9.) An interceptor syphon-trap of approved pattern, with fresh air inlet
or ventilating pipe (with an internal diameter of not less than three and a
half inches) on the house side, shall be placed in the drain on the premises as
near as practicable to the sewer, and beyond all branch connections. The mouth
of the air inlet shall be constructed in such a manner as to prevent the admission
of solid matters and be fixed in the most practicable position available.
(10.) An inspection chamber or man-hole may be provided where practicable
on the house side of the disconnecting trap, to facilitate access to the
drain for the purpose of cleansing and repairs
(11.) If the drain be not ventilated by a soil pipe, a pipe at least four
inches in internal diameter shall be fixed for the purpose of ventilating the
drain at its highest part, and be constructed in such a manner as if it were for
the purpose of ventilating a soil-pipe.
(12) The junction pipes used in the drains shall be those known as Y
junctions.
(13.) The inlets to the drains shall be properly trapped with gully traps,
except inlets used for the purpose of ventilation. Traps known as " bell,"
"lip," or "dip," traps shall not be inserted in the drains. The inlets to the
drains shall be outside the house, except the necessary inlets connected with
water-closet basins, aud water-closets shall be properly ventilated into the
external air.
(14.) The yard gully shall be at least six inches in diameter, and shall
have an outlet connected with the drain at least four inches in diameter, and
shall be covered with an iron or other approved grating.
(15.) All waste pipes from scullery sinks, baths, and lavatories, and all pipes
conveying foul matters to the drains from inside the house (except soil pipes
from water-closets), and every rain water pipe, excepting such as may be used
for the purpose of ventilation, shall be made to discharge over or into a gully
connected with the drain outside the house.
(16.) Drains shall not be laid under any part of a house, if it be practicable
to lay them outside of the house.
(17.) In case of neglect or default by any person to comply with the order
of the Vestry to execute any works, matters, or things, the person so offending