КРИТИЧНА ТЕМПЕРАТУРА СТАЛІ І ВОГНЕЗАХИСТ МЕТАЛЕВИХ КОНСТРУКЦІЙ

Abstract

Evaluating the fire-resistant ability of fire-resistant coatings of metal load-bearing building structures consists in obtaining the dependence of the minimum thickness of the fire-resistant coating on the specified metal thickness (section coefficient) and the normalized limit of fire resistance for a given critical temperature of the metal. The value of the critical temperature is determined by the project documentation depending on the grade of steel and design loads on the structure. In Ukraine, for a long time, a temperature of about 500 0C was used as the main critical (design) temperature of steel structures with fire-resistant coatings and cladding. The implementation of European standards in Ukraine allows applying a differential approach to determining the critical temperature of steel elements and calculating the fire resistance of steel structures in accordance with Eurocodes 3.