The development of engineering and design, the emergence of new materials (steel, concrete, aluminum, etc.) stimulated the emergence of new types of large-span structures. The structures became lighter, this made it possible to increase the size of the overlapping area. The use of large spans is due to the operational and architectural requirements in public buildings (markets, train stations, stadiums, concert and sports halls). In industrial buildings, large spans are subject to technological requirements. The space freed from supports, covered with a large-span structure, gives the building an emotional and plastic expressiveness. The use of large-span structures makes it possible to maximize the bearing qualities of the material and thereby obtain light and economical coatings. Reducing the mass of structures and structures is one of the main trends in construction. Less weight means less material, less material to be mined, processed, transported and installed.

In recent decades, especially after the September 11, 2001 attacks, more and more attention has been started to pay to the problems of the progressive collapse of frame buildings. This problem is especially topical while constructing the buildings with an increased level of responsibility. This problem is mostly solved by duplicating of supporting structure elements which results in significant increasing the cost of building structures. However, there is the other approach: by using the tension resisting ties, strained in accident, the structure can be relieved. Under this study a numerical experiment has been performed using the Scad software to proof this theory. For the numerical experiment there was chosen a building with two bays each 30 meters long at 6 meter intervals of load-bearing structures. According to the results of numerical simulation more than 20% of the supporting structures’ material has been saved compared to the absence of ties. This approach can be taken to the construction of almost all frame buildings with an increased level of responsibility and allows saving material.