London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
City of London 1904
Report of the Medical Officer of Health for the City of London for the year 1904
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Ventilation of
traps of slop
sinks.
(2) He shall, as regards the ventilation of the trap of such slop sink or
urinal, and the construction of the waste pipe of such slop sink or urinal, comply
with all the requirements of the preceding and following Bye-laws which are
applicable to the ventilation of the trap of a water-closet and the construction
of a soil pipe, always provided that the internal diameter of the waste pipe
of any such slop sink or urinal shall not be less than 3 inches, and where
the internal diameter of such waste pipe is 3 inches the weight of such pipe
for every 10 feet of length shall, if such waste pipe be constructed of lead, be
not less than 60 lbs., and if such waste pipe be constructed of cast iron the
weight of such pipe for every 6 feet of length shall be not less than 40 lbs.
Provided that in any case where only one or two urinal basins are connected to
such waste pipe the internal diameter of such waste pipe may be not less than
2 inches.
Situation and
material of soil
pipe.
7. (1) Any person who shall provide a soil pipe in connection with a new
building for the purpose of conveying to a sewer any solid or liquid
excremental filth, or shall for that purpose construct a soil pipe in connection
with an existing building, shall, whenever practicable, cause such soil pipe
to be situated outside such building, and shall construct such soil pipe in
drawn lead or of heavy cast iron. Provided that in any case where it
shall be necessary to construct such soil pipe within such building, he
shall construct such soil pipe in drawn lead with proper wiped plumbers'
joints, and so as to be easily accessible.
Thickness and
weight.
| Diameter. | Lead. Weight per 10 feet lengtd, not less tdan | Iron. | |
|---|---|---|---|
| tdickness of metal, not less tdan | Weight per 6 feet lengtd (including socket and beaded spigot or flanges, tde socket not to be less tdan 1/4 in. tdick), not less tdan | ||
| 3½ inches | 65 lbs. | 3/16 inch. | 48 lbs. |
| 4 ,, | 74 „ | 3/16 | 54 „ |
| 5 ,, | 92 „ | 1/4 | 69 „ |
| 6 „ | 110 „ | 1/4 | 84 „ |
Joints.
(3) If he shall construct such soil pipe of cast iron with socket joints, he shall
cause such joints to be not less than 2½ inches in depth, and to be made with
molten lead properly caulked, and he shall also cause the annular space for
the lead, in the case of 3½-inch and 4-inch pipes, to be not less than 1/4 inch in
width, and, in the case of 5-inch and 6-inch pipes, to be not less than 3/8 inch
in width. If he shall construct such soil pipe with flange joints, he
shall cause such joints to be securely bolted together with some suitable
insertion.