Lawrence Webster Forrest
Legion House
Lower Road
Kenley
Surrey
CR8 5NH

Tel: +44 (0)20 8668 8663 Fax: +44 (0)20 8668 8583
E-mail: fire@lwf.co.uk

QATAR EDUCATION CITY CONVENTION CENTRE
Key Facts: Client: Qatar Petroleumrn Contractor: Baytur Construction and Contracting Co. Designer: RSA Design Group Approximate Size: 79...

BS9999:2008 – Code of practice for fire safety in the design, management and use of buildings
LWF PROFESSIONAL BULLETIN The new code of practice for fire safety in the design, management and use of buildings; BS9999 is published by BSI and came into effect on 6 October 2008. The British ...

Arc27 Smoke Control Strategies in Building Design - Part 2

Arc27.pdf

Fires have sufficient power to force smoke through the small gaps around doors into protected areas such as stairs and lobbies. But this movement of smoke can be controlled by mechanically altering the forces that cause it. The principles of this method are: * airflow can control smoke movement if its average velocity is high enough * a pressure difference across a barrier can control the movement of smoke These principles are linked, but in engineering terms it is easier to consider them separately. We use velocity in the case of large gaps (open doors) and pressure differences when looking at gaps around closed doors.