View report page

69
Access to Trap.—6. Means of access to the drain must be "water-tight up to the level of
the adjoining ground surface or roadway, and be fitted with a suitable manhole cover," which
must be air-tight if placed within a building.
No Right-angled Junctions.—7. No right-angled junction, either vertical or horizontal
allowed in the main drain. Branch or tributary drains to join another drain obliquely in the
direction of the flow, and as near as practicable to the invert thereof.
Ventilation of Drains.—8. At least two untrapped openings to the drain are to be provided.
Alternative arrangements are specified, which may be adopted "as the circumstances of the
case may render the more suitable and effectual." Gratings or covers to openings (to secure free
passage of air, with apertures of indicated aggregate extent) are to be provided to every such
opening to the drain for the purpose of preventing any obstruction in or injury to any pipe or
drain. No bends or angles in the ventilating pipe are to be allowed, except where unavoidable.
Size of pipes.—The internal diameter is to be "not less than four inches." Use of soil pipes as
ventilating pipes.—The soil pipe of any water closet, or the waste pipe of any slop sink, constructed
or adapted to be used for receiving excremental filth, may be used to provide the
necessary opening for ventilation, where the said pipe satisfies the conditions prescribed in the
case of an ordinary ventilating pipe. It is provided that a soil pipe or waste pipe, of an internal
diameter of not less than three and a half inches, and complying with the previously prescribed
conditions, may be used for the ventilation of a drain having an internal diameter of not more
than four inches.
No Inlets to Drains within Buildings.—9. There may be no inlet to a drain within a building,
except such as may be necessary from the apparatus of any water closet, slop sink, or
urinal.
Material of Waste Pipes.—10. Waste pipes for carrying off water from a lavatory or sink
(not being a slop sink or urinal constructed or adapted for carrying off excremental filth) may
be constructed of lead, iron, or stoneware, and must be trapped immediately beneath such lavatory
or sink by an efficient syphon trap—of lead, iron, or stoneware, and with means for
inspection and cleansing—for ventilation into the external air whenever such ventilation may be
necessary to preserve the seal of such trap. Traps to waste pipes.— It will not be lawful to
construct or fix, in connection with a waste pipe, lavatory, or sink, any trap of the kind known
as a bell-trap, a dip-trap, or a D-trap. Waste pipes to discharge in the open air.—Every pipe for
carrying off waste water to a sewer must be made to discharge in the open air over a properly
trapped gully, or into such a gully above the level of the water in the trap thereof.
Soil Pipes.—II. Whenever practicable, the soil pipe is to be outside the building and constructed
in drawn lead or of heavy cast iron ; where it is necessary to construct the soil pipe
within the building the pipe must be constructed in drawn lead, with proper wiped plumbers'
joints, and so as to be easily accessible. The weights of leaden pipes, and the thickness and
weight of iron pipes are prescribed. Joints.-—The socket joints of a cast-iron soil pipe are to
be made with molten lead properly caulked ; flanged joints to be securely bolted together with
some suitable insertion. No connection with rain water and waste pipes.—The soil pipe is not
to be connected with any rain water pipe or with the waste of any bath, or of any sink, other
than that which is provided for excremental filth. No traps.—There is to be no trap in the soil
pipe, or between it and any drain with which it is connected. Diameter.—The soil pipe is to be
circular : not less than inches in internal diameter, and is to be continued upwards, full bore,
and (except where unavoidable) without any bend or angle, to such a height, and in such a
position as to afford by means of the open end a safe outlet for foul air.
Connection of Lead Soil Pipe, &c., with Iron Drain, dec.—12. Prescribes the method of connecting
a lead soil pipe, waste pipe, ventilating pipe or trap with an iron pipe or drain communicating
with a sewer.
Connection of Stoneware Trap of Closet, &c., with, Lead Soil Pipe, (fee.—13. Prescribes the
method of connecting a stoneware or semi-vitrified ware trap or pipe with a lead soil pipe, waste
pipe or trap communicating with a sewer.
Connection of Lead Soil Pipe, &c., with Stoneware Drain, &c.—14. Prescribes the method of
connecting a lead soil pipe, waste pipe, ventilating pipe or trap with a stoneware or semivitrified
ware pipe or drain communicating with a sewer.
Connection of Iron Soil Pipe, tic., with Stoneware Drain, &c.—15. Prescribes the method
of connecting an iron soil pipe, waste pipe, ventilating pipe or trap with a stoneware or semivitrified
ware pipe or drain communicating with a sewer.
Connection of Stoneware Trap of Closet, &c., with Iron Soil Pipe, Sc.—16. Prescribes the
method of connecting a stoneware or semi-vitrified ware trap or pipe with an iron soil pipe,
waste pipe, trap, or drain communicating with a sewer.
Ventilation of Trap of Water Closet.—17. In the case of any water closet the soil pipe of
which communicates with a sewer, and is in connection with any other water closet, the trap of
every such water closet is to be ventilated into the open air at a point as high as the top of the
soil pipe, or into the soil pipe at a point above the highest water closet connected with such soil
pipe ; the said ventilating pipe to have in all parts an internal diameter of not less than two
inches, and to be connected with the arm of the soil pipe or the trap at a point not less than
three and not more than twelve inches from the highest part of the trap, and on that side of
the water seal which is nearest to the soil pipe ; the joint between the ventilating pipe and the
arm of the soil pipe or the trap to be made in the direction of the flow. Such ventilating pipe
to be constructed in drawn lead or of heavy cast iron : of drawn lead only if necessarily within
a building. The weight of lead and iron pipes is prescribed. The joints in and the connections
to such ventilating pipe to be made in the same manner as if it were a soil pipe.