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occupied by members of more than one family shall not, in the
absence of special circumstances justifying a modification
thereof, be regarded as reasonably suitable for such occupation
unless the following general standards obtain:-
A. Natural Lighting:
(i) The provision and maintenance in every habitable
room, of a window or windows (capable of being
opened at the top), opening directly to the
external air, and having, where practicable, a
glass area equal to at least 1/10th of the
floor area.
(ii) The provision and maintenance, wherever
practicable, of adequate means of natural
light to a common staircase.
B. Ventilation:
The provision and maintenance of adequate means of
ventilation for every passage, room, water closet
apartment and staircase.
C. Water Supply:
(i) The provision of one tap per floor with a water
supply, preferably from the rising main, a
sink of suitable size and pattern and efficient
means for carrying off any waste water from the
tap.
(ii) The provision in future conversions into multioccupation
of one tap per floor and, if more than
one letting, one tap per letting. In each case
the provision of a sink of suitable size and
-pattern and efficient means for carrying off any
waste water from the tap.
(iii) The provision in every hostel, boarding house,
guest house, and boarding school, of a water
supply reasonably accessible to the occupants of
each sleeping room.
D. Sanitary Conveniences:
(i) If practicable, the provision and maintenance of
one water closet for every four habitable rooms,
or one water closet for every ten persons
irrespective of age; existing accommodation is
to be deemed insufficient if it fails to conform
to both of these requirements, or if it is not
reasonably accessible to the persons for whom
it is intended;
except in the case of
(ii) hostels, boarding houses and similar establishments
where one water closet for every ten persons,
sited so as to be conveniently accessible in
relation to sleeping rooms, shall be deemed
sufficient;
and
(iii) Boarding schools, where a standard of one water
closet for every five pupils, as laid down in the
Standards for School Premises Regulations, 1954,
should be borne in mind;
and
(iv) Future conversion to single room lettings, where
one water closet for every four lettings and not
more than one floor distant shall be required;
and