BIM Technology for Creating Digital Doubles of Buildings: Implementation Analysis of Functional Complexity

The buildings life cycle management is the actual problem of construction industry digitalization process. BIM-software is widely used on the new construction design stage. At the same time, the Russian market has no full-fledged software tools for life-cycle and re-enactment modelling. Existing software tools can be applied to this problem with significant constraint. To solve the whole problem, it should be created new specialized program modules. In this article, seven CAD systems were analyzed by their functions, such as BIM integration, availability of their own application program interface (API) and dealing with temporary loads for steel structures and were defined the optimal BIM-systems for users.