1959-HKRS30-8-49_Part01 — Page 49

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least seven feet above the level of the floor or in the case of detached and semi-detached buildings, at least six feet six inches above the level of the floor; and

(5) such that not less than the area required by sub- sub-paragraph ( of sub-paragraph (2) (herein- after referred to as the prescribed office window) faces directly into the external air.

(3) No prescribed office window sball, for the purposes of this regulation, be deemed to face into the external air unless it faces into a space uncovered and unobstructed above the area delineated by the rectangular horizontal planc.

(4) The rectangular horizontal plane shall be such that-

(a) where the wall in which the window is sited is opposite to any other wall or building within the boundary of the site on which the building for which the window is provided is erected, no dimension thereof is less than fifteen feet, or, in any other case, no dimension thereof is less than seven feet six inches;

(b) the area thereof is not less than three square feet for every one foot of the mean height, above the rectangular horizontal plane, of the walls enclosing the space into which the prescribed office window faces:

Provided that the area thercof need not, in any case, exceed three hundred and fifty square feet; and

(c) no part thereof projects beyond any boundary of

the site on which the building is erected:

Provided that where there is a scavenging Jane or street less than fifteen feet wide adjacent to and parallel with the boundary, the rectangular horizontal plane may project to a line five fect beyond the boundary.

(5) For the purposes of this regulation—

(a) "rectangular horizontal plane" means a rectangular plane, at the level of the sill of the window, which complies with the requirements of paragraph (4); and

(b) the sill of a window shall be deemed to be at a level three feet six inches above the level of the floor of the room for which the window is provided, whether or not the sill is at such level.".

14. Regulation 27 of the principal regulations is rescinded and Rescission replaced by the following-

and replace Inght of

"Windows

opening on to enclosed

27. Where any room used or intended to be used for regulation 27. babitation or for the purposes of an office has a window verandah, ale which opens on to an enclosed verandah or balcony or on

to a conservatory or on to any similar enclosed place, within, in cach case, the boundary of the site on which the building is erected, such window shall be deemed to comply with the requirements of regulations 26 and 26A or 26C, as the case may be, if-

(4) such verandah, balcony, conservatory or similar enclosed place is provided with a window which would comply with the requirements of regulations 26 and 26A or 26C, as the case may be, if it were the window of a room having a floor area equivalent to the aggregate of the areas of the floors of such room and such verandah, balcony, conservatory or similar enclosed place, as the case may be; and

(6) the area of glass and the opening in the window of such room is such that, to that extent, such window would comply with the requirements of sub-paragraph (a) of paragraph (2) of regulation 26 or sub-paragraph (a) of paragraph (2) of regulation 26C, as the case may be, if it were like- wise the window of a room having a floor area equivalent to the aggregate of the areas of the floors of such room and such verandah, balcony, conservatory or similar enclosed place.".

Amendment of regulation

15. Regulation 28 of the principal regulations is amended by- (a) the deletion of the words "such purposes" and the substitution 28.

therefor of the following-

"the purposes of an office"; and

(b) the addition, after the number "26", of the following-