Page 48

Section 5

BS 5588-7:1997

Evacuation strategy progressive horizontal evacuation

Means of escape provision should be based on equivalent non-atrium building

Is there a fire load within the atrium?

No

Yes

Fire engineering solutions required

No

Is there a controlled fire load within the atrium? Yes Provide L1 AFD fire alarm system throughout building

Provide L1 AFD fire alarm system throughout building

Provide smoke exhaust system to the atrium1)

Provide smoke clearance system to the atrium

Enclose atrium with 60 min fire-resisting (integrity and insulation) and smoke retarding construction

Enclose atrium with 60 min fire-resisting (integrity and insulation) and smoke retarding construction

See exemplar 23

See exemplar 23

1) Occupants of category D premises are a particularly vulnerable section of society and in certain circumstances evacuation

may cause them harm, or delayed recovery, or aggravate their medical condition. To ensure that smoke does not enter spaces adjoining the atrium, a smoke exhaust system is required to maintain a stable smoke layer 1 m above the uppermost opening into the atrium.

Figure 6 — Occupancy category D: occupants requiring medical or nursing care

42

Š BSI 8 December 2004

Bs 5588 71997 fire precautions in the design, construction a  
Read more
Read more
Similar to
Popular now
Just for you