The article highlights the issues of fire safety in buildings. The author believes that increasing the fire resistance of bearing structures at the design stage of the building, is the primary criterion for the safety of people in fires.   Feature of the paper is to develop methods for rapid assessment of fire resistance of steel structures based computing system Structure CAD for Windows (SCAD), and use the results of computer simulation, instead of alternative experimental methods.

Keywords: structural engineering, fire building structures, fire protection, fire safety in buildings, fire, temperature calculation methods