In steel structures and as well as for composite structures, the only effective method to ensure the correct classification of mechanical resistance to fire is to proceed with Fire Engineering and the analytical verification methods provided by the Eurocodes. In particular, we refer to the second part of Eurocode 3 and the second part of Eurocode 4 as regards steel-concrete structures.
Within these standards are all the chemical-physical characteristics of the basic materials and also the thermo-mechanical characteristics of these elements during the increase in temperature and therefore the modification of the original properties.
From the calculation point of view, any professional engineer can perform it if properly guided through a procedure or tutorial that is normally available within the Eurocodes themselves.
It starts with the thermal analysis of the individual elements and then it extends to the thermal analysis of the entire structure.
Watch the video to learn more.