1984 Ed.]
Building ! Planning) Regulations
[CAP. 123
F 17
[Subsidiary]
horizontal plane, is projected, towards the site and above the rectangular horizontal plane, at an angle of 80° from the horizontal where the window is in a room used for habitation or 83° where the window is in a room used for the purposes of an office or as a kitchen, no part of the building, or of any other building within such site, protrudes above such inclined plane:
Provided that, where there is a service lane or street less than 4.5 m wide adjacent to and parallel with such boundary, the boundary shall, for the purposes of this sub-paragraph be deemed to be at a position 1.5 m beyond such boundary.
(2) The rectangular horizontal plane shall be such that-
(a) it has an area of not less than 21 m2: and
(b) the minimum length of the base is not less than 2.3 m; and
(c) the minimum length of the sides at right angles to the base, between the wall in which the window is sited and any other wall or building opposite thereto within the boundary of the site on which the building is erected, is not less than 4.5 m; or
(d) where the window opens on to an area bounded on the side opposite to the window by a boundary of the site on which the building is erected, the minimum length of the sides at right angles to the base, between the wall in which the window is sited and such boundary, is not less than 2.3 m;
or
(e) where the window opens on to an area bounded on the side opposite to the window by a boundary of the site on which the building is erected and there is a service lane or street less than 4.5 m wide adjacent to and parallel with such boundary, the minimum length of the sides at right angles to the base, between the wall in which the window is sited and a line 1.5 m beyond such boundary or, where such service lane or street is less than 3 m wide, between the wall in which the window is sited and a line drawn along the centre line of the service lane or street, is not less than 2.3 m.
(3) For the purposes of this regulation-
(a) "base", when used in relation to the rectangular horizontal plane, means that side of the rectangular horizontal plane common with the line of the sill of the window: "rectangular horizontal plane" means a rectangular plane at the level of the sill of the window having the minimum area and minimum dimensions prescribed by paragraph (2);
"window" includes french window; and
(b) the sill of a prescribed window shall be deemed to be at a level 1 m above the level of the floor of the room for which the prescribed window is provided, whether or not the sill is at such level.
G.N.A. 97/62.
L.N. 54/69.
L.N. 54/69.
L.N. 54/69.