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Enclosed verandah etc. with- in lot boundaries.
Where no external wall.
Alternative mechanical ventila-
Lion and artificial
lighting.
Additional vent may
BUILDING (PLANNING) REGULATIONS, 1956
27. Any room used for such purposes, having a window which opens on to an enclosed verandah, balcony, conservatory or similar enclosed place shall be deemed to open directly into the external air, if such room and such place are both provided with windows which do so open and would suffice for the purposes of regulation 26 if they were the windows of a room having a floor area equivalent to the combined floor areas of such room and such place.
28. Every room used for such purposes having no external wall shall be deemed to conform to regulation 26 if it is lighted and ventilated by means of a lantern light, of which can be opened an area not less than 1/16th of the area of the floor.
29. Where owing to the position, level or unsuitable sur roundings of any room used for such purposes, the provisions of regulation 26 cannot be complied with to the satisfaction of the Building Authority-
(d) a mechanical means of ventilation shall be provided which shall be capable of supplying fresh air to all parts of that room at a rate of not less than three air changes per hour; and
(D) in the case of a room used as an office such artificial
lighting as the Building Authority may approve.
30. (1) Where in the opinion of the Building Authority be required. compliance with the provisions of these regulations will not secure adequate ventilation for any room used for such purposes by reason of its intended use, unsuitable surroundings or other cause he may require that room to be provided with additional ventila- tion by means of-
(a) an aperture or airshaft communicating direct with the open air, having an unobstructed sectional area of not less than 20 square inches; or
(b) a fanlight which opens to a ventilated lobby or corridar;
or
(c) such other means of ventilation as shall be approved by
him.
(2) For the purpose of regulations 25 to 30, a laundry being part of or used in connexion with any building shall be deemed to be used for the purpose of habitation.
BUILDING (PLANNING) REGULATIONS, 1956
21
31. Every room constructed or adapted to be used as a Kitchens, kitchen (not being a kitchen in a tenement house) shall be provided with-
(c) a window of which a superficial area of not less than 100 square inches opens directly into the open air; or
(b) an aperture or air shaft communicating direct with the open air having an unobstructed sectional area measuring not less than 64 square inches; or
(c) mechanical or such other means of ventilation capable of giving 5 air changes per hour as shall be approved by the Building Authority:
Provided that in the case of larger kitchens serving restaur- ants and canteens, the means of ventilation shall be capable of giving up to 40 air changes per hour,
32. (1) Every room containing any sanitary fitting shall be Water provided with-
(a) a window or lantern light of which-
(i) a superficial area of not less than 2 square feet for each sanitary fitting within such room, opens as near the ceiling as practicable directly into the open air; or
(i) a portion, at least equal in area to 1/toth of the area of the floor, opens as near the ceiling as practicable directly into the open air; or
(b) mechanical or such other means of ventilation giving not less than three air changes per hour as shall be approved by the Building Authority.
(2) No such room shall open directly into any room intended for the manufacture, preparation or storage of food for human consumption,
(3) For the purpose of this regulation, a sanitary fitting means a water closet, each stall in a trough water closet or a urinal.
closets.
to be
33. No building shall be erected in such a manner as to Light and reduce the quantity of light and air available to any other build- ir not ing, which has been erected in accordance with these regulations, diminished. below that required under these regulations.