Technical Booklet E Fire Safety·Page 54·2.49
Central core storey exits planning
Buildings with multiple storey exits in a central core must have those exits remote from each other and not connected by lift halls, lobbies, or undivided corridors; corridors should be subdivided by self-closing fire doors to separate the exits.
A building with more than one storey exit in a central core should be planned so that the storey exits are remote from each other and not linked by a lift hall, lobby, or undivided corridor. Where the central core is separated from the accommodation by a corridor, the corridor should be subdivided by self-closing fire doors (and any necessary associated screens) so that the storey exits are separated as in Diagram 2.8.
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