Hull Construction Regulations
222 (1) Every stairway that is located in an accommodation space, service space or control station and that penetrates only a single deck shall be protected at one level by at least ‘B-0’ Class fire rating divisions and self-closing fire doors.
(2) Every stairway that is located in an accommodation space, service space or control station and that penetrates more than a single deck shall be enclosed in a stairtower of at least ‘A-0’ Class fire rating construction and have self-closing fire doors fitted at every level but the stairtower may be of ‘B-0’ Class fire rating construction if
(3) All stairways, including stringers, treads and risers in accommodation spaces, service spaces and control stations shall be constructed of steel.
- SOR/83-521, s. 4
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