Fire Resistance Testing for Steel Structures: Key Requirements
Fire resistance testing for steel structures produces a time rating for a protected member, not a property of the steel itself. That rating depends on the load ratio, the section factor, the protection type and the thickness applied, and it is extended to other sections by calculation in an assessment report. This guide sets out what an R 60 or R 90 rating actually describes, the three protection routes and the standard each one is assessed against, how a loaded furnace test is run, and the site changes that void a rating after it has been issued.










