ABSTRACT
It has been shown, how the selection of static scheme for a single transverse frame in a typical steel hall determines the sought fire resistance of that hall. For comparative purposes several computational models differing in complexity have been considered for the same fire development scenario and the same frame. Loss of the capacity to safely resist the applied static loads, identified on the equilibrium path, has been considered as the representative measure of resistance against increasing in fire temperature of structural steel components. Juxtaposition and comparison of the obtained results leads to the unequivocal conclusion, that the higher the level of simplification in the applied computational model, the more overestimated the resultant fire resistance determined based on that model.
