Hull Construction Regulations

Version of section 170 from 2006-03-22 to 2017-02-02:

  •  (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 contruction and have self-closing fire doors fitted at every level but the stairtower may be of ‘B-0’ Class fire rating construction if

    • (a) there are at least two escapes giving direct access to the open deck at every accommodation level; and

    • (b) the ship has accommodation for not more than 12 persons.

  • (3) All stairways, including stringers, treads and risers in accommodation spaces, service spaces and control stations shall be constructed of steel.

  • SOR/78-605, s. 3
  • SOR/83-521, s. 4
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