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BS 5588-7:1997

Is phased evacuation being considered ?

No

Yes

All stairs to be sized for simultaneous evacuation

Provide L2 AFD within atrium and associated floor areas and voice alarm throughout building

Provide pressure differential system by either atrium de-pressurization or pressurization of associated floor areas validated by a fire engineering solution

Provide L2 AFD within atrium and associated floor areas and alarm throughout building

Provide pressure differential system by either atrium de-pressurization or pressurization of associated floor areas validated by a fire engineering solution Controlled fire load within atrium base

Controlled fire load within atrium base Is atrium 30 m or less in height?

No

Yes Provide sprinkler system in associated floor area(s)

Sprinklers may only be required as part of the fire engineering solution

No exemplar given

See exemplar 6

Provide sprinkler system in associated floor area(s) See exemplar 10

Figure 3e — Occupancy category A: occupants who are awake and, predominantly, are familiar with the building — Atrium enclosed with fire-resisting construction and using pressurization

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Š BSI 8 December 2004

Bs 5588 71997 fire precautions in the design, construction a  
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