The article discusses the features of numerical modeling of the limits of fire resistance of structures under the influence of standard and hydrocarbon temperature regimes. After carrying out the assessment using the proportionality coefficient, it is necessary to carry out a verification calculation of the structure tested under the standard temperature regime of the fire, and if the results obtained coincide, the calculation of the structure under the hydrocarbon regime.
Keywords: fire resistance of concrete building structures, standard fire temperature regime, hydrocarbon fire regime, fire resistance