Analysis of constructive solutions of centrally-compressed elements

Computational parameters are grounded in the formula of the direct method for selecting the area of the centrally-compressed steel rods. By using this method for the exemplary computation of the panel in the upper tier truss frames under computation length = 3 m and elongated efforts N = 200…2000 кN, the advantages of square tubes in comparison to coupled stiffeners have been shown, the steels of additional strength have been provided efficient as well as the usage of the stiffeners with the high degree of wall thinness.