2214 ORDINANCE No. 24 or 1887.
Public Health.
Ventilation. 26. Every main house- drain shall have a ventilating opening near to its lower end
and no trap or other obstruction to the free circulation of air shall exist between this
opening and the one described in the preceding bye-law.
If there be a trap between the house-drain and the public sewer, then an opening
shall be made on the house-side of the trap, and the said opening shall be so arranged
as to give access to the trap for inspection , cleansing or repair.
If there be no trap between the public sewer and the house-drain no special
opening need be provided at the lower end.
Ventilation. 27. Drains leading from a single trap and not being more than sixty feet long,
need not be provided with an elevated ventilating opening at their upper end but if
this be omitted, they shall be provided with a trap, disconnecting them from the public
sewer, and shall have a ventilating opening at the lower end on the house-side of the
trap.
Ventilating 28. Ventilating and fall pipes of stoneware shall be securely fixed to the exterior
pipes.
surfaces of walls with wrought iron bands fitted round the pipe and made fast to the
wall with two wrought iron spikes not less than four inches in length . Metal pipes
shall also be fixed as above or shall have two ears fixed to them and secured to the wall
with two wrought iron spikes, not less than four inches long.
Down-pipes, 29. Down-pipes, conveying rain-water from roofs , shall be constructed of cast or
welded wrought-iron , and when the down-pipe discharges into the house-drain it shall
be completely disconnected therefrom, as described in bye- law No. 31 and fitted with a
bend, shoe or pedestal pipe. Wherever practicable, the rain-water down-pipes on the
street side of buildings, shall be carried under the footpath and discharge into the
side-channel.
NOTE. - It is most important that such pipes should be completely disconnected from the sewers
so that they cannot by any possibility serve as conduits for conducting sewer air up and into the
dwelling.
Waste-pipes. 30. Waste-pipes from baths, sinks and other similar appliances, on the upper
floors of buildings shall be of cast-iron socketted pipes or wrought- iron welded- pipes
with screwed joints coated with bituminous composition , or in the case of wrought- iron,
galvanised ; or of well glazed stone-ware socketted pipes, or other approved materials ,
securely fixed outside the wall, and provided , at each point of connection, with a suitable
head, and at their lower extremity with a bend, shoe or pedestal pipe . All joints of
stoneware pipes to be made in the manner provided for in bye- law 5.
NOTE.- Zinc, tin-plate, rivetted or lap-jointed sheet-iron will not be approved.
Waste-pipes. 31. Waste-pipes, as well as down-pipes from roofs, shall not be connected direct
with any drain but shall discharge in the open air near to or over a trap and they shall
be brought down to within one foot or less from the ground.
Rain-water 32. No rain water-pipe from the roof of a building shall be used as a ventilating
pipes.
shaft to any drain which communicates or is designed to communicate with a public
sewer.
NOTE. Rain water-pipes terminate at the caves of the house a point not high enough above
windows to be a safe ventilating outlet.