Steel Buildings in Europe

Part 6: Fire Engineering 6 - 32 4.4.2 Critical temperature approach The basis for this approach is to calculate the temperature of the member after the required period of fire resistance and to compare it to the critical temperature, at which the member would collapse. The steps that must be followed to apply the critical temperature approach are shown in Figure 4.6. Figure 4.6 Fire design of members using the critical temperature approach Critical temperature The simple model with the critical temperature approach can only be used for individual members, when their deformation criteria or stability considerations do not have to be taken into account. This approach is only permitted for 