As a result of the study, the rate of heat release, the heat flux distribution, the glass surface temperature, the cracking pattern and the loss of integrity of the glass unit were determined. In, the results of experiments in which a double-glazed window was exposed to a fire are presented. The mechanism of cracking and subsequent loss of glass significantly affects the dynamics of the fire. The results of the study allow for the estimation of the influence of the scale factor on the falling of the glass from the frame in a fire (loss of integrity). During operations, these structures will be able to prevent the spread of fire and combustion products for the required time after the loss of integrity. According to the results of several simulations, a conclusion was formed about the possibility of predicting the fire resistance limits of tempered glass based on its thickness and dimensions. A large-sized sample of monolithic tempered glass measuring 4250 × 2000 × 8 mm and inserted into an aluminum frame provided a fire resistance limit of E60, proving the effect of the frame on the fire resistance of the structure. The small-sized samples of monolithic tempered glass with dimensions of 1000 × 700 × 8 mm provided a fire resistance limit of E60 for loss of integrity. The results showed that large-sized samples of monolithic tempered glass, with dimensions of 4250 × 2000 × 8 mm and 2000 × 3000 × 8, that were inserted in a steel frame, if properly installed, provided fire resistance limits of E30/E45 and E60, respectively, for loss of integrity, which proves the influence of the dimensions of the glass panel on the fire resistance of the facade structure. Two methods are employed in this work: experimental studies of small-sized and large-sized samples and simulations of heating glass structures. Glass structures are subject to high fire safety requirements. Glass is widely used for the manufacture of the facades and interior glazing of buildings.
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