Technical Booklet E Fire Safety·Page 78·2.94
Helical stairs and spiral stairs
Helical and spiral stairs may form part of escape routes if designed to BS 5395: Part 2, and must be Type E (public stair) when intended for public use.
Helical stairs or spiral stairs may form part of an escape route (other than for the evacuation of disabled people or for the evacuation of pupils in schools) provided that they are designed in accordance with BS 5395: Part 2. Helical stairs and spiral stairs should be of Type E (public stair) where they are intended to be used by the public.
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