The aim of the research is to develop defect catalogs of single building structures for operational digital building information models. The importance of standardization of defect description for improving the efficiency of life cycle management of capital construction objects is emphasized. The study of existing software solutions is carried out, their limitations in the context of defects accounting are revealed. A catalog of defects including visualization and description of key parameters is developed using Renga software. The presented results demonstrate the potential of digitalization of diagnostics and repair planning processes, as well as the need for further development of functional capabilities of BIM-tools to account for dynamic changes in the state of structures.

Keywords: operational digital information model, defects of building structures, defect catalog, defect classifier

This article investigates the application of a digital operational model to enhance the efficiency of maintenance and repair processes for capital construction projects. The study focuses on the operational phase within the building lifecycle, analyzing maintenance procedures and categorizing structural defects. The research identifies limitations in traditional defect reports, which lack quantitative data and spatial referencing to the building structure. These limitations hinder their effectiveness in organizational and technical planning for repair works. The proposed digital model optimizes building condition management, improves the accuracy of technical assessments, and facilitates precise quantification of repair scopes. It also enhances collaboration between facility management and contracting entities. A case study of the educational and laboratory building at the Northern (Arctic) Federal University demonstrates the model's implementation. Key benefits include cost reduction, improved maintenance quality, and streamlined operational workflows. The findings highlight the potential of digital tools to transform building maintenance practices, offering a data-driven approach to facility management in the construction sector.

Keywords: maintenance and repair, operational digital model, defect, defect list, technical condition