View report page

67
3. Plans— Such notice must be accompanied by a plan drawn to a scale of not less than 16
feet to an inch, accompanied by a block plan, showing the locality of the intended works, drawn
to a scale of not less than 44 feet to an inch. The plan must show as much detail of the house
or premises proposed to be drained as is necessary to enable a judgment to be formed as to the
efficiency of the intended drainage. It must also show the position of all water closets, sinks,
bath wastes, etc., the lines of new drains with the sizes thereof to be shown in red, and any existing
drains in blue upon the plan.
4. Sizes of Drains.—All horizontal main pipes shall have an internal diameter of 6 in. if
of stoneware, and an internal diameter of 5 in. if of iron, and the connection with the foot of
the soil pipe or trap of basin must be made with proper bends and taper pipes. For the drainage
from areas, single water closets, sinks and subsidiary drains, 4 in. pipes may be used.
5. Gradient of Drains.—The whole of the available fall is to be made use of, excepting it
can be shown that a steeper gradient than 1 in 20 would result therefrom, in which case the
gradient may be broken at the point where the drain emerges into the street, and a steeper gradient
adopted from the sewer to the line of the house. No drain to have a less fall than 1 in 50, unless
special provision be made for an automatic flushing of the Irains by the adoption of an approved
flushing syphon.
6. Separate connection to Sewer Jor each Building.—All new houses or buildings shall have
a separate drain in connection with the sewer, unless otherwise sanctioned by the Vestry, and no
drain shall be laid under any house or building should it be practicable to lay it outside the same,
even though the length of drain may be increased or the fall less favourable. In all cases of
defective drainage, upon re-construction, the existing system may be retained, if desired, provided
a proper fall can be obtained. All other regulations to apply to the system of re-construction the
same as in the case of new property.
7. Drains in direct lines.—The drains shall be laid in direct lines between the points of
inspection wherever possible: should curves be unavoidable, pipes of proper radii must Ixj used.
8. Materials.—The drains of all houses and buildings shall consist of glazed stoneware
pipes or of cast iron coated with Dr. Angus Smith's bituminous rust prevention coni{)ositior),
inside and out.