CPD Seminar - Smoke Pressurisation Systems

Pressurisation Systems in residential and commercial buildings

Approved Document B to the Building Regulations requires smoke ventilation to escape stairs and, under some circumstances, common lobbies and/or corridors in residential buildings. Pressurisation is one way of meeting this requirement.

BS 9999: 2008 Recommends Pressurisation (desiged to EN12101-6) to:

• Replace Seperation of dead end corridors with a fire door
• Replace protected lobbies in single stair buildings, buildings over 18m, buildings with phased evacuation and buildings where a stair has not been discounted in the sizing of escape widths
• Allow a single stair to extend down to a basement
• Fire fighting shafts over 10m deep and over 30m tall (class B)

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