Abstract
Abstract Studying the causes of accidents allows avoiding mistakes in the design, construction and operation of the building. According to the results of a continuous visual and detailed instrumental examination, the materials are collected and analyzed in the article that characterize the causes of the accidental collapse of the overlapping section of the metal frame. The calculation of steel beams of the overlapping section in the “2-3/B-V” axes at the + 4,500 mark of the overland parking building was performed in the LIR-STC design system of the LIRA-CAD 2013 program both for design combinations of efforts and for design combination of loads. Design errors that led to the accident are identified. Both the results of the calculation of the bolted connection, and the calculation of steel profiled flooring are presented. In addition, technical decisions are made on the further safe operation of the facility. This accident draws attention to the problem of ensuring safety of buildings and structures and the need for an integrated approach in the framework of industrial safety expertise.