JUSTIFICATION OF THE TABULAR METHOD OF ASSESSING FIRE RESISTANCE FOR REINFORCED CONCRETE STAIRCASE

Abstract

The paper presents the results of analyzed fire resistance indicators during computational experiments of reinforced concrete staircases. Using the calculation method, using the finite element method, the most significant parameters affecting the fire resistance of these structures were determined. In order to determine the minimum design parameters of reinforced concrete staircases, a regression dependence of the fire resistance limit on the limit state of the loss of bearing capacity was created. Using the obtained data, a table was built with the minimum structural parameters of these structures, which makes it possible to determine compliance with the required fire resistance class of reinforced concrete stairwells.