METHOD OF THE BUILDING ENCLOSING STRUCTURE FIRE RESISTANCE ESTIMATION BY THE CRITERION OF THERMAL INSULATING ABILITY Russian patent published in 2018 - IPC G01N25/50 

FIELD: fire safety.

SUBSTANCE: invention relates to the field of fire safety of buildings and can be used to classify the enclosing structures of buildings according to their resistance to high temperatures during a fire. Evaluation of fire resistance of the building's enclosing structure is carried out without destruction, according to a set of the building element single quality indicators. For this, determining the enclosing structure (slab, wall) geometric dimensions, design cross-section heating pattern under fire conditions, the index of the structure building material thermal diffusion, revealing the enclosing structure body initial temperature, the maximum permissible temperature and the critical heating temperature of the enclosing structure unheated surface and by them, using the appropriate analytical equation, finding the fire resistance limit of the enclosing structure on the basis of loss of thermal insulation ability – F_uτ, min.

EFFECT: increasing the enclosing structure reliability of statistical quality control and nondestructive testing without full-scale fire impact, reduction of the required amount of PC main memory for calculation of fire resistance, reduction of economic costs.

9 cl, 3 dwg, 1 tbl