The article reveals the interoperability of several software products. The concept of interoperability of software products is supported by OpenBIM standards, providing a project with a reliable platform and open source code for integrating BIM models with other environments. It is possible to exchange data between software systems, not only through the IFC format, in the article we will consider other means of information exchange. An algorithm is formed that optimizes the number of the number of reinforcing bars in the slabs. The optimization is possible due to the interaction of different software systems through plugins.

Innovations in the construction industry have led to a change in the technological structure, the use of end-to-end technologies, innovative materials, information management and the need for new technical, technological and managerial solutions. The research problem is the optimal placement of glass-fiber reinforced plastic bars in concrete structures. It took several steps to solve the research problem: 1) development of an algorithm for solving the design problem in TEKLA Structures; 2) performing of calculations based on the finite element method in LIRA-SAPR, which were further reproduced in Rhinoceros and Grasshopper (based on interoperability in a single BIM environment); 3) implementation of the optimization algorithm using the parametric optimization method; 4) A practical calculation of determining the optimal values of the loads of glass-fiber reinforcement in the slab on the example of a typical design problem of a structural element of a construction facility; 5) calculation of positive economic effect. The conclusion is that the algorithm can be used in the practice of building design.

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