Decomposition of the building into structural elements in the assessment of life cycle costs of construction objects.

Abstract

                The article substantiates the author's methodological approach to determining the cost of the life cycle of a construction object at the stage of preparing investor estimate documentation, taking into account the current industry regulatory and methodological framework and focusing primarily on the public customer. The necessity of calculating (grouping) investor estimate documentation is shown not by types of construction works, but by structural elements that have a generalizing and unchanging nature when determining the cost of construction, maintenance and repair of the object, which makes the structural elements the necessary unit for determining the cost of the life cycle.                 The possibility of decomposition of structural elements by levels of generalization related to the structure of the market of contractors and their products was also noted. The rules for the initial formation, use and subsequent clarification of value indicators during the design and development of the infestor estimate documentation and at the subsequent stages of construction, maintenance (repair) and completion of operation of the object are proposed. In this way, the evolutionary nature of the methodology is noted as the data necessary for calculations are accumulated and refined.

                The application part shows the compatibility of the proposed approach and BIM technologies, which also operate with structural elements. The procedure for displaying life cycle costs in the digital information model of the project is proposed, according to the levels of generalization and content - costs in the BIM model can be planned and actual and can be specified by value (amount) or calculation (estimate). The possibility of applying graph theory to the tasks of calculating the costs of the life cycle of a construction object is illustrated, which facilitates the development of mathematical apparatus and corresponding algorithms for estimating the cost of the life cycle using the BIM model.

                Corresponding changes to the current DSTU are proposed in terms of the development and standardization of the nomenclature of structural elements of buildings and structures and the standardization of the structure and the order of displaying information about the life cycle costs of the construction object in the BIM model.