| Summary: | This article discusses the problem of determining the actual scheme of a precast reinforced concrete frame of a building when performing engineering surveys. The method of connecting precast reinforced concrete structures in industrial buildings with heavy equipment plays an important role in assessing the stress state of building structures. It is not always possible to perform the opening of nodes in the conditions of existing production, since this requires stopping technological processes or dismantling equipment. The article discusses the possibilities of static and dynamic tests for the study of support units in precast reinforced concrete structures during engineering surveys. The possibilities of static and dynamic test methods are considered, as well as the advantages and disadvantages of these methods when evaluating support units in precast reinforced concrete structures of buildings and structures during surveys. As an example for the study, the case of determining the current structural scheme of a precast reinforced concrete floor using dynamic tests is considered. The article analyzes previous studies on the use of the dynamic method in determining the actual scheme of existing reinforced concrete structures of an industrial building. The results of theoretical studies and their comparison with experimental results are presented. The general conclusions based on the results of the study are formulated, and recommendations are given on the choice of a method of testing structures for cases of establishing a structural scheme of precast reinforced concrete crossbars in operated industrial buildings during survey work.
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