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Amendments Nos and 2 Fire tests on building materials and structures - Part 3- Classification and method of test for external fire exposure to roofs. Original standard BS 476-3-2004 (2007) in PDF full version. Additional info + preview on request

Document status: Active

Fire tests on building materials and structures - Part 31- Methods for measuring smoke penetration through doorsets and shutter assemblies - Section 31.1 Method of measurement under ambient temperature conditions. Original standard BS 476-3.1-1983 (2024) in PDF full version. Additional info + preview on request

Document status: Active

Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications - Part 4- Specification for laminated boards (roofboards) with auto- adhesively or separately bonded. Original standard BS 4841-4-2006 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications - Part 5- Specification for laminated boards (roofboards) with auto- adhesively or separately bonded. Original standard BS 4841-5-2006 (2011) in PDF full version. Additional info + preview on request

Document status: Withdrawn

Methods for testing and rating fan coil units, unit heaters and unit coolers - Thermal and volumetric performance for cooling duties- without additional ducting. Original standard BS 4856-2-1975 (1999) in PDF full version. Additional info + preview on request

Document status: Active

Specification for approval testing of welders working to approved welding procedures - Arc welding of tube to tube-plate joints in metallic materials. Original standard BS 4871-3-1985 (1998) in PDF full version. Additional info + preview on request

Document status: Withdrawn