This article deals with the condition of existing residential buildings 50–60 years, which are outdated and are subject to immediate technical inspection and reinforcement. The most important factor for the safe operation of such buildings is the quality of construction factor, since in the 50–60s the construction was carried out with many of the shortcomings that are presently present.
As a real example of such a house where there were shortcomings in construction, a residential house in Drohobych was considered, where a four-storey building collapsed. The design scheme and basic structures of the building are described. Main defects and damage to the building, including those that appeared after the collapse, are presented. Using the finite element method in LIRA-SAPR, the models of the parts of the residential building that remained after the collapse were calculated. Tests were carried out on specimens of bricks taken directly at the site of the collapse, on the basis of which the strength of masonry was determined. The theoretical results of the calculations are compared with the actual condition of the building parts.
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