The structural behaviour of steel frames with composite floorslabs subject to fire

Abstract

A companion paper gives details of a new method for the design of steel framed structures, with composite floorslabs, subject to fire. This method is based on the fire tests carried out on the full-scale steel framed building at Cardington. Observations from these tests confirmed the general view that the performance of composite flooring systems is under-utilised in current design procedures for the fire limit state. This is due to the development of in-plane forces in the floorslab at large displacements, which enhance the slab’s loadcarrying capacity. C.G. Bailey and D.B. Moore