ABSTRACT
The assessment of the residual load bearing capacity of reinforced concrete structures after their exposition to fire requires the estimate of the actual strength of both concrete and steel and the subsequent computation of the sections’ capacity. In most cases the knowledge of materials strength, even after accurate and extensive testing, is not sufficient for the purpose. In fact in-situ testing cannot be extended over all the sections depth, while every single spot of the sections contributes to the overall bearing capacity with a strength that depends on the local maximum temperature reached during the fire.
