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113
Continued.—
(b) The second opening shall be obtained by carrying up from
the point or head of the drains farthest distant from the firstmentioned
opening, a vertical pipe or shaft to such a height, and in
such a manner as effectually to prevent any escape of foul air from
such pipe or shaft into any building in the vicinity thereof.
13. A suitable trap to provided in every main drain which
directly communicates with the sewer at a point as distant as may
be practicable from the building, within the curtilage thereof, and as
near as may be practicable to the point at which such drain may be
connected with the sewer.
14. Immediately above the disconnecting trap a suitable inspection
chamber shall be constructed, provided with an air-tight cover.
15. Junctions of branch drains shall in no case be made at right
angles, but with proper junction pipes, having the branch pipe
formed on them at an angle of 4.5 to 60 degrees with the main drain
in the direction of its flow; no cutting of pipes will be sanctioned,
and no vertical right angle junctions will be allowed except as
inspection shafts, or for ventilation purposes.
16. Rain water pipes, bath wastes, and all wastes from sinks,
hydraulic lifts, or other business appliances shall deliver outside the
building on to open trapped gullies, or if they must of necessity be
within the building, on to special interceptors approved by the
Vestry, which must in every case be connected to the drains, and
all inlets to the drains shall be properly trapped except those inlets
used for the purpose of ventilation. "Bell'' traps will on no
account be allowed.
17. Soil pipes placed vertically shall be of at least seven 1bs.
lead. They shall be of an internal diameter of 4 inches, and placed,
wherever practicable, outside the house or building-, and in every
case extended full bore up to and above the eaves, finished with
an approved cowl, at such a height as effectually to prevent any
escape of foul air into any building in the vicinity thereof. The
connection between the water-closet and the soil pipe and ventilating
pipe shall be of lead. Soil pipes are not to be used as rain-water
pipes. Continued.-