Research of structural load-bearing systems exposed to elevated temperatures – fire conditions, is an actual topic in civil engineering. Various building materials are being used, analysed and verified in ongoing research projects regarding their physical properties variation in both ambient and elevated temperature and its effect over a structural system or element in fire scenario is analysed. Real-size experiment of a specimen exposed to fire is a challenging task considering not only the preparation labour but mainly the necessary costs. Therefore, real-size experiments are simulated using various software and computational models in order to predict the structural behaviour as exact as possible, whilst the experiment results serve as an input for appertaining software models and their further application. In the frame of this paper such a procedure, focusing on software simulation, is described in details.