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164
Air outlet. b opening shall be obtained by
ing up from a point in the drains, as far distant as may be practicable
from the front inspection chamber an iron or lead pipe or
shaft, not less than 4 inches in diameter, vertically, 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, and in no case to a less height than 10 feet.
Alternative
plans.
c. In every case where the foregoing arrangement of
the ventilation of the drains is impracticable, there
shall be substituted such an arrangement as the Vestry shall
direct.
No bends or
angles.
d. No bend or angle shall (except where unavoidable)
be formed in any pipe or shaft used in connection
with the arrangements hereinbefore specified.
No air inlet under building. e. No air inlet to the drain of a building shall be
constructed within or underneath any such building.
Soil-pipe and
ventilation of
same.
15. Every soil-pipe from a water-closet shall be not
less than 4 inches in diameter, and be fixed outside the
building, and be continued upwards without diminution of its diameter,
and, if possible without any bends, to such a height and position as
to afford by means of the open end of such soil-pipe a safe outlet for
foul air.
Soil-pipe connections
and
materials.
16. The connection between the water-closet and the
soil aud ventilating pipe shall be of lead. Soil-pipes are
not to be used as rain-water pipes; they shall be constructed of
drawn lead, at least 7-lbs. in weight to the superficial foot, when inside,
and galvanized iron when outside the house, with air-tight joints.
Anti-syphons.; 17. When one or more water-closets are placed one
above another, delivering into a common soil-pipe, the traps of each
closet must be specially ventilated by means of a 2-in. lead pipe
turned into the main ventilation-pipe. All ventilation-pipes are to be
made of iron or lead, with air-tight joints.
Soil-pipe not
to be trapped.
18. There shall not be any trap between any soil-pipe
and the drains.
waste-pipes. 19. The waste-pipe from every bath, sink or lavatory
shall be taken through an external wall and discharge into the open
air immediately over a trapped gulley-grating.
Slop-sink waste
pipe.
20. The waste-pipe from any slop-sink (as distinct
from an ordinary scullery or kitchen sink) within such
building shall be constructed in compliance in all respects with such
of the provisions of these regulations as are applicable to the soilpipe
of a water-closet.