BR135: Annex B. Performance criteria and classification method for BS 8414-2:2005
BRE (Building Research Establishment) is an independent, research-based consultancy, testing and training organisation, operating in the built environment and associated industries.
On 10 April 2007, BRE published BR135: Annex B. Performance criteria and classification method for BS 8414-2:2005, (Digest 501) by Sarah Colwell.
BR 135: Fire performance of external thermal insulation for walls of multistorey buildings, sets out the principles, design methodologies and fire spread performance characteristics for non-loadbearing cladding systems. It was written in response to the increasing use of thermal insulation in the refurbishment of multistorey buildings, which can offer a potential route for the spread of fire.
BR135: Annex B extends the coverage in Annex A of BRE 135 to cover cladding systems supported by a structural steel frame, in line with BS 8414-2:2005 Fire performance of external cladding systems. Part 2: Test method for non-loadbearing external cladding systems fixed to and supported by a structural steel frame.
It is a 4-page digest which presents a new classification system for the fire performance of cladding on multi-storey buildings. It is Illustrated with schematics and graphs showing a typical test facility and describes the test methodology and performance criteria for assessing systems which use framed structures.
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