The Building Code of Australia (Smoke Hazard Management, clause E2) requires a stairwell pressurisation system to ensure the occupants of a building in a fire emergency have sufficient time to evacuate the building before the stairwell becomes untenable. A stairwell pressurisation system must be installed in accordance with AS/NZS 1668.1:1998 and maintained as part of the annual fire maintenance and certification schedule in accordance with AS 1851-2005.
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