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214
proper damp-proof course, and, if in contact with the soil, shall
be effectually protected against dampness from that soil, by
means of a vertical damp-proof course or otherwise ;
(c) There shall be outside of and adjoining such room
and extending along the entire frontage thereof and open
upwards from six inches below the level of the floor thereof
an area properly paved and effectually drained and at least
three feet wide in every part, and of a mean width not less
than four feet; provided that in the area there may be placed
steps necessary for access to the room, and over and across
such area there may be steps necessary for access to any
buildings above the room if the steps are so placed in such
case as not to be over or across any external window of the
room ;
(d) The sub-soil of the site of such room shall be
effectually drained by means of a sub-soil drain properly
trapped and ventilated wherever the dampness of the site
renders such a precaution necessary;
(e) The space, if any, beneath the floor of such room
shall be provided with adequate means of ventilation;
(f) Every drain passing under any such room other than
a drain for the drainage of the sub-soil of the site of such
room 3hall be properly constructed of a gas-tight pipe;
(g) Such room shall be effectually protected against the
rising of any effluvia or exhalation, by means of a layer of
asphalte or of good concrete at least six inches thick, or four
inches thick if properly grouted, laid upon the soil of the site
of the entire room or in some equally effectual manner;
(h) Every such room which is without a fire-place and
a flue properly constructed and properly connected with such
fire-place, shall be provided with special and adequate means
of ventilation by a sufficient aperture or air-shaft which shall
provide an unobstructed sectional area of one hundred square
inches at the least.
(I) Such room shall be sufficiently lighted by one or
more windows opening directly into the external air; Provided
that such window or windows shall have a total area