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59
to break joint, bedded top and bottom in cement in the proportion
of not more than one part of sharp clean sand to
one of cement.
6. Unless the room is provided with a fireplace and a
flue properly constructed and properly connected with such
fireplace, it shall be provided with special and adequate means
of ventilation by one or more suitably placed apertures or
air shafts.
7. There shall be outside of and adjoining the room
and extending along the entire frontage thereof, except
as regards the portion of the frontage occupied by the steps
hereinafter mentioned, and open upwards from six inches
below the level of the floor thereof, an area or open space of
a mean width not less than the height of the room from the
floor to the surface of the street, and in no case less than
3ft. 6in., properly paved and effectually drained in every
part.
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 building
above the room if the steps in each case be so placed as not
to be over or across any external window of the room.
8. The room shall have in every part thereof at least
three feet of its height above the surface of the street adjoining
or nearest to the room.
Provided that if an area be constructed as aforementioned
the height of the room above such surface may be
less than three feet, but in no case more than one foot below
such surface.
9. (i.) The room shall be effectually lighted by means of
one or more windows opening directly into the external air.