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Legend: Explanations & Illustrations Rationale Note Revision history Print

CLAUSE 7.3 - PRESSURISATION OF INTERNAL CORRIDORS IN HOTELS

7.3.1 Pressure differences

E

a. Where internal corridors in hotels are required to be pressurised in compliance with Cl.9.7.2a.(3), the pressure within such corridors shall be higher than that in the guest rooms by 12.5 Pa. Corridor pressurisation shall be activated for the floor on fire and two floors above.

b. The pressure within the smoke-free lobby/fire lift lobby serving these internal corridors shall be higher than that of the internal corridors by 12.5 Pa. The pressurisation fans serving the smoke-stop lobby/fire lift lobby shall activate on all floors during a fire.

c. Pressure within the internal exit staircases shall comply with Cl.7.2.2a..