METHOD OF DETERMINING FLAME RESISTANCE OF BUILDING BRICK PIERS Russian patent published in 2009 - IPC G01N33/38 

FIELD: fire safety.

SUBSTANCE: invention relates to fire safety of the buildings and can be used to classify brick piers and separating walls with respect to their flame resistance characteristics. The proposed method comprises performing tech inspection, defining the bricklaying type, types of bricks and mortar, the bricklaying elastic stability, the pier support and attachment conditions, determining the probable time of occurrence of limiting flame resistance conditions of plain brick piers at rated load in the conditions of standards fire. Testing the said plain brick piers involves no destruction and incorporates a set of separate quality properties of the plain brick piers. The date and place are selected for quality characteristics to be defined. The aforesaid tech inspection is supplemented by instrument measurements of brick pier geometrical sizes at critical sections. The pattern of heating in aforesaid critical sections of piers in fire is determined, as well as temporary compression resistance of bricklaying. The rated load onto brick piers is selected for flame resistance test conditions and strains in the pier critical sections are defined.

EFFECT: determination of plain brick pier and separation wall flame resistance involving no natural heating; higher validity of quality control checks and non-destructive tests.

12 cl, 5 dwg, 2 ex