Technical Booklet E Fire Safety·Page 64·2.66
Phased evacuation design concept
Phased evacuation is a design strategy where the first to evacuate are occupants on the fire floor and floor above plus those with reduced mobility, followed by evacuation of two floors at a time if needed.
In certain buildings it may be advantageous to design the escape stairways on the concept of phased evacuation. With phased evacuation the first people to be evacuated are those on the floor of the fire and the floor above together with those in the building who have reduced mobility. Subsequently, if there is a need to evacuate more people, it should be done two floors at a time.
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