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painted, or varnished, or limewashed similarly to the walls.
(c) Walls. (See above under regulations applying to all
Bakehouses.)
(d) Floors. The floors are to be made of at least 6 inches of
concrete rendered smooth in cement or with other jointless, hard,
smooth or impervious paving. The floor of the Bakehouse
should be laid to proper falls and be drained by means of a
suitable channel to a gully over which, if practicable, a draw off
tap should be fixed, the gully being properly dished and placed
outside the Bakehouse.
(ii) Light. An underground Bakehouse should be provided
with one or more windows opening directly into the external air,
or into an area or areas, so as to be properly lighted by the
admission of day light—such windows should have a total area,
clear of the sash frames, equal, at least, to 1/10th of the floor space
of the Bakehouse, and be so constructed that ½ at least of each
window can be opened. The opening in each case to extend to
the top of the window. The lighting of a Bakehouse may also
be obtained in part by areas opening on the footway, glazed with
reflecting prisms, the walls of the areas being built in white,
glazed bricks. No Bakehouse will be considered suitable in
which it is necessary at all times to illuminate artificially.
(iii) Ventilation. An underground Bakehouse should be
properly and effectually ventilated by permanent inlets and outlets
(other than the windows or staircase) of sufficient size and suitable
character, such openings not being under the control of the
persons employed. Through ventilation will be insisted upon,
and this is not to be obtained from the footway surface or the
stall board of the shop front, unless at a height of at least
12 inches above the footway surface; and not even then when
ventilation can be had in any other way.
The temperature of an underground Bakehouse should be
constant and equable (say 60-65° Fahrenheit.) It will, of course
be higher (say 80° Fahrenheit) at certain periods of baking
The standard of ventilation should be such that the CO2 does not
exceed 10 per 10,000 volumes while the work is going on.