(1) Every habitable room shall have a clear height of not less than that set out in subsection (2), over the percentage of floor area of such room set out in subsection (3) and shall otherwise comply with the provisions of subsection (4).

(2) The clear height referred to in subsection (1) shall be as follows—

a) In dwellings, 2,4 meter;

b) In shops, 2,9 meters;

c) In all other buildings, 2,6 meters

(3) The percentage of floor area referred to in subsection (1) shall be as follows—

a) Where a steeply pitched roof forms part of the walls or ceiling of such room (as in attics), at least 50 per centum;

b) In all other cases, at least 75 per centum.

(4) Although the requirements of subsections (1) and (2) may have been complied with, in the following portions of a habitable room the minimum clear height shall be 2,1 meters—

a) In any portion of such room leading to or giving access to doors or windows;

b) In any portion of such room at a horizontal distance from the walls of 1,5 meters.

(5) In all habitable rooms, except kitchens, the minimum floor area over which the minimum clear height of the room of 2,4 or 2,6 or 2,9 meters, as the case may be, is maintained shall be 7 square meters, measured exclusive of immovable objects, such as columns, stairways and built-in cupboards, and such minimum floor area shall have a minimum horizontal dimension of 2,1 meters.