S-3, r. 2 - Regulation respecting safety in public buildings
27. Horizontal exits:
(1) (Paragraph revoked).
(2) Horizontal exits may not be considered as more than one half of the required number of exits.
(3) The floor area on each side of a horizontal exit shall be sufficient to hold the occupants of both floor areas served by such horizontal exit.
(4) Bridges, balconies and vestibules which constitute horizontal exits shall:
(a) have no steps;
(b) comply with the requirements of subsection 3 of section 21 respecting gradients;
(c) be made of materials with a fire-resistance rating of at least 3/4 of an hour;
(d) have a clear width at least as great as that of the exit doorways opening into them but in no case shall such width be less than 1,100 mm;
(e) be provided with well secured guards of not less than 1,070 mm in height;
(f) be located so that openings adjacent to exits are more than 2.4 m from such exits or closed with materials with a fire-resistance rating of a least 3/4 of an hour.
R.R.Q., 1981, c. S-3, r. 4, s. 27; O.C. 88-91, s. 22.