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  • To the selection of the optimal metal truss for a pitched roof

    The article should choose a metal truss based on the initial data for pitched roofs. Defined maximum loads and deflections in each truss. On the analysis of the residually deformed state of the truss, it was concluded that the most authentic in terms of the structural members of the truss. Recommendations are given for the design of load-bearing structures of roofs on metal trusses in the manufacture of a shed roof structure.

    Keywords: truss, effort, designing, deflection, roof, load, static calculation, displacements, trapezoidal truss, Molodechno truss

  • To the calculation of a multi-storey frame with rigid crossbars

    The shear calculation scheme of a multi-storey building, popular in design practice, is considered.The application of the method of displacements is shown, when the mutual displacements of the floors of the frame are taken as unknowns. The indicated technique leads to the solution of the system of equations of the displacement method with the upper two-diagonal matrix, which makes it possible to obtain an analytical solution of the problem.

    Keywords: shear calculation scheme of the building, move method, tridiagonal matrix, sweep method, reciprocal movements, analytical solution of the equation system

  • Improving the efficiency of construction projects management on the basis of digitalization

    The article talks about improving the competencies of professionals in the management of construction projects based on the international standard IPMA ICB4. Project management has become one of the most important management mechanisms in the market economy system today. Getting the effect of the project management process gives the company a lot of benefits; increases the likelihood of achieving the goals; provided optimal use of resources and satisfaction of the needs of stakeholders. To increase the economic efficiency of investment and construction projects, a competence map of the construction project manager (project manager) has been developed. It is necessary to improve the competencies of professionals in the management of construction projects using the experience of international standards.

    Keywords: project, project management, project management, certification, competence, investment and construction complex, international standard, IPMA ICB4 standard, competence map, certified professional

  • Assessment of the bearing capacity of a metal truss: analysis of the results of field tests

    The article presents the results of an on-site test spatial metal farm of an aircraft hangar with a span of 72 m. A comparative analysis of the data obtained by the simulation of the farm from the predicted loads (taking into account the actual geometry) and the on-site tests is performed. During the assessment of the technical condition and testing, significant errors were identified in the design and manufacture of gate frames structures,which could lead to loss of bearing capacity or unsuitability for normal operation. Based on the test results, measures were developed and implemented to strengthen the elements of the farm, repeated full-scale tests were conducted. Based on the foregoing, the span structure is recognized as suitable for safe operation.

    Keywords: test, metal truss, bolted connections, compliance, bearing capacity, deformability, gate frame, reliability, static calculation