Time-to-Failure Prediction and Damage Location

The noncooled specimen NC failed after 49min of ISO fire exposure. Owing to the fact that the nondimensional slenderness rapidly increased to a high value of 5.6, the ultimate load converged to the Euler buckling load. The time-to-failure prediction could therefore be based on the Euler buckling load prediction. 

The applied load was limited by the test setup. Compared to real loads in buildings, it was relatively low and approximately corresponded, for example, to the dead load (1 kN m ) and serviceability load (2 kN m ) of two floors (in lightweight 

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