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Section 5

BS 5588-7:1997

Are accommodation floors more than 4.5 m above ground level ?

Yes

Is there an alternative escape route from the accommodation?

No

Yes

Evacuation strategy to be based on individual occupancies

Evacuation strategy to be based on individual occupancies

No

Yes

Evacuation strategy to be based on individual occupancies

Provide M of E in 2 directions to independent protected escape routes with a 18 m maximum travel distance from the front door to nearest storey exit or fire door leading to protected corridor

Each dwelling to be provided with a window or door through which escape can be made independent from the atrium

Fire alarm warning to be that appropriate for the equivalent non-atrium building

Is the escape over unenclosed balcony within the atrium?

Fire alarm warning to be that appropriate for the equivalent non-atrium building

Fire alarm warning to be that appropriate for the equivalent non-atrium building. AFD for smoke control systems as appropriate

Provide a smoke control system validated by a fire engineering appraisal to ensure that untenable conditions are not created to means of escape within the atrium

Enclose atrium from accommodation with 60 min fire-resisting and smoke retarding construction

Enclose atrium from accommodation with 60 min fire-resisting and smoke retarding construction

Provide smoke clearance system within atrium

Provide smoke clearance system within atrium

Atrium base: no control required

Atrium base: no control required

See exemplar 17

See exemplar 18

Enclose atrium from accommodation with 60 min fire-resisting and smoke retarding construction

Controlled fire load in atrium

Provide sprinkler system throughout building See exemplar 19

Figure 5b — Occupancy category C: occupants who are likely to be asleep — Category C2: long term occupancy, managed

Š BSI 8 December 2004

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Bs 5588 71997 fire precautions in the design, construction a