ABSTRACT
ABSTRACT: The paper presets a part of the results reached during the Structural integrity fire test in Cardington laboratory January 16, 2003. The work summarises the instrumentation and focuses to the measured stresses and temperatures in columns, which was instrumented to observe the tie forces under natural fire. Comparison to finite element simulation, taking into account the connection behaviour is included. The test documents, that finite element models allows presuming the steel to concrete composite frame behaviour with a good accuracy. The composite action and joint behaviour play important role in the structural behaviour under fire. The simple rules for the design of the protected columns ware confirmed in all thee parts of prediction; in fire modelling by parametric fire curve, in transfer of heat to the structure, and in the structural analyses.
