British Standards for Smoke and heat control Systems

1.Specification for natural smoke and heat exhaust ventilators

http://rapidshare.com/files/316143274/BSEN12101_2.pdf.html


2.Specification for powered smoke and heat exhaust ventilators

http://rapidshare.com/files/316143785/BSEN12101_3.pdf.html


3.Specification for pressure differential systems — Kits

http://rapidshare.com/files/316144154/BSEN12101_6.pdf.html