Smokeproof Tower 1
Smokeproof Tower 1 : (Build) (1) A continuous fire-resistive enclosure protecting a stairway from fire or smoke in the building served, with communication between the building and the tower by means of open balconies. Also called: Smoke Tower; Erroneously, Fire Tower. (2) A similar structure for the same purpose, jutting out from or built into an outer wall of a building but adequately separated from the building by appropriate construction and fire-resistant doors. (3) = (Brit) enclosed staircase
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