(1) General requirements. —Subject to the provisions of this section, required daylight openings in any room shall have a total area admitting daylight, that is excluding the frame-members in accordance with the requirements of Table I

Table I
Minimum permissible areas of required daylight openings

(2) Required daylight openings under projections. – If a required daylight opening is overhung by an open veranda, balcony, eaves or other projection so that the projection cuts a line drawn from any refence-point, positioned as described in subsection (4), away from the building in a plane at right-angles to the plane of the wall containing the opening, and at 4 degrees to the horizontal, then the required area of the daylight opening shall be increased by 1 per centum of the floor area of such room for every 300 millimetres of projection of such veranda, balcony, eaves or other projection beyond such line.

(3) Where a projection, as described in subsection (2), projects over an opening so as to cut a line drawn from any reference point (positioned as set out in subsection (4) ) away from the building in a plane at right-angles to the plane of the wall containing the opening, and at 30 degrees to the horizontal, that opening shall not be considered a required daylight opening:

Provided that, where there shall be additional natural or artificial sources of light to the satisfaction of the local authority, the provisions of this subsection may be relaxed by the local authority

(4) Any reference-point referred to in subsection (2) or (3) shall be in the plane of the daylight opening concerned, and within the width of such opening, and at a height of the sill of such opening, or 300 millimetres above the floor-level of the room served by such opening, whichever is the higher level.