Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Annual report of the Medical Officer of Health for the year 1912
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part of the street adjoining or nearest to the room, shall comply
with the following regulations, namely:—
1. The subsoil of the site of the room shall be effectually
drained by means of a subsoil drain properly trapped and
ventilated wherever the dampness of the site renders such a
precaution necessary.
2. Every drain passing under the room, other than a drain
for the drainage of the subsoil of the site of the room, shall be
gas-tight and water-tight.
3. The room shall be effectually protected against the rising
of any effluvium or exhalation.
4. The space, if any, beneath the floor of the room, shall be
provided with adequate means of ventilation.
5. (i.) Every wall of the room shall be provided with a
proper horizontal damp-proof course which, if the floor of the
room be formed of woodwork, shall be beneath the level of the
lowest timbers or woodwork of such floor, and in every other case
shall be not less than one inch below the level of the upper
surface of such floor.
(ii.) No part of any wall of the room shall, where it is
practicable to avoid it, be in contact with the ground or earth.
Provided that where any wall of the room is in contact with the
ground or earth, such wall or such part thereof as is so in contact
shall, unless constructed as a hollow wall, have an efficient vertical
damp-proof course extending from the base thereof to a height of
at least six inches above the surface of such ground or earth.
6. Unless the room is provided with a fire place and a flue
properly constructed and properly connected with such fire-place,
it shall be provided with special and adequate means of ventilation
by one or more suitably placed apertures or air shafts.
7. An area properly paved with impervious material and
effectually drained by means of a properly trapped gulley shall
adjoin the room and extend either throughout the entire length of
one side thereof, or at least throughout the entire width of any
window or windows required by these regulations, and (except
where the area of such window or windows shall be of not less
extent than one seventh of the floor area of the room) for three
feet on both sides of such window or windows.
Such area shall be not less than two feet wide in every part
thereof, and shall be open upwards from a level three inches
below the level of the damp-proof course in the adjoining wall of
the room