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THE HONGKONG GOVERNMENT GAZETTE, AUGUST 20, 1909.
571
6. There shall be a clear height at any point between the lowest tier and the floor of not less than 10 feet and between the highest part of the top tier and the lowest part of the ceiling of not less than 12 feet. In the case of all intermediate tiers, there shall be a clear height of not less than 10 feet.
Exits.
7. Two separate exits not leading into the same street shall be provided to every tier or floor of such premises. If any tier or floor shall be divided into two parts two separate exits not leading into the same street shall be provided to each of such parts. Such exits shall be so arranged as to afford a ready means of egress from both sides of each tier or floor and shall lead directly into a street.
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8. Where vestibules are provided, not more than three tiers or floors (or where such tiers or floors are divided into two or more parts, such parts of tiers or floors) sh municate with one vestibule. The width of each vestibule shall be at least as great as the united width of all the doorways or passages that lead thereto.
9. The united width of all the doorways or passages that lead from a vestibule towards
a street shall be at least of the same width as such vestibule.
10. Not more than one exit from each separate part of a tier or floor shall be used as
an entrance.
Staircases, Corridors, &c.
11. Every staircase, landing, lobby, corridor, or passage intended for the use of not more than four hundred persons of the audience, shall be formed of fire-resisting materials, and shall not be less than four feet six inches wide; but if communicating with any portion. of the house intended for the accommodation of a larger number of the audience than four hundred persons, it shall be increased in width by six inches for every additional hundred persons until a maximum width of nine feet be obtained.
12. Every staircase intended for the use of the audience shall have solid square (as distinguished from spandril) steps of concrete or other fire-resisting materials to be approved by the Building Authority with treads not less than 11 inches wide and with risers not more than 6 inches high, without winders, in flights of not more than twelve or less than three steps each.
13. The treads of each flight of steps shall be of uniform width and the steps shall be pinned into brick walls at both ends.
14. The several flights of such steps shall be supported and enclosed upon all sides by brick walls not less than 9 inches thick.
15. No staircase shall have more than two flights of twelve steps each without a turn.
16. All landings shall be at least 12 inches thick, be square upon plan and shall be so constructed as the Building Authority may require.
17. Every staircase shall have a roof of fire-resisting materials to be approved by the Building Authority.
18. A continuous handrail shall be fixed on both sides of all steps and landings supported by strong metal brackets built into the wall. Such handrails shall be chased into the walls where the thickness of the walls will permit but in all cases where the flights of steps return, the newel wall shall be chased so as to allow the handrail to turn without projecting on the landing.
Gangways.
19. A clear passage or gangway not less than 3 feet wide shall be formed at the sides and in the rear of the seating in every part of such premises. Such passages or gangways shall at all times be kept free from chairs, flap seats, or other obstructions whether permanent or temporary.