Technical Booklet E Fire Safety·Page 60·2.61
Number of escape stairways
The number of escape stairways required in a building or part of a building is determined by provisions related to independent escape routes, horizontal escape route design, stair width, and firefighting stairway requirements.
The number of escape stairways in a building, or part of a building is determined by the provisions in – (a) paragraph 2.39 regarding independent escape routes from areas in certain uses; (b) paragraphs 2.41 and 2.43 regarding the design of the horizontal part of the escape route; (c) paragraphs 2.63 and 2.64 regarding the width of stairs and the discounting of a stairway respectively; and (d) Section 6 regarding the provision and location of firefighting stairways.
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