Technical Booklet E Fire Safety·Page 36·2.4
Emergency egress windows - requirement and location
Every storey in a dwellinghouse without alternative escape routes must have an emergency egress window. Upper storey windows must be positioned to facilitate rescue by ladder from the ground.
Every storey (including a basement storey) in a dwellinghouse which does not have alternative escape routes leading to their own exits should have an emergency egress window for escape or rescue purposes.
An emergency egress window that serves a storey should –
(a) where the storey is an upper storey – be located to facilitate rescue by ladder from the ground;
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