The life cycle of buildings taking into account physical wear and tear

The purpose of this work is to study the effect of physical wear of structural elements on the life cycle of a capital construction facility as a whole. Based on the results of numerous surveys of buildings, significant shortcomings of the existing methodology for determining physical wear have been identified, which justifies and plans repair measures for further operation to ensure trouble-free operation of structural elements and engineering systems. Modern reality is characterized by the objective need for excessive operation of construction facilities and, first of all, multi-storey residential buildings. Checking their compliance with modern operational and moral requirements is associated with the need to conduct an inspection and determine the level of physical deterioration of the building. Its practical implementation is based on a generalization of the detected defects, malfunctions and damages of structural elements and components of their interfaces according to the criteria of the modern cost of analogues. This approach does not allow us to take into account the accompanying changes in the technical parameters of the operational indicators of buildings, which determine the need and type of repair and restoration work. The article proposes an original method for summarizing the existing faults, taking into account their impact on the operational reliability of the building according to the criterion of probable progressive collapse. An example of its implementation for two structural schemes of panel buildings of the 1-335C and 1-335(KS) series is presented. The results of determining the physical wear of wall fencing using the adjusted methodology for buildings of the 1-335C (incomplete frame) and 1-335KS (complete frame) series showed their significant difference in the same areas of wall panel collapse. A new technique for determining the physical wear of structural elements can be used at almost all stages of the building's life cycle. 

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