| 简介 |
Useful model relates to the field of construction and is directed at Your lu labor input in mounting and metal consumption due to use of rarefied grid of truss (of a smaller amount of braces) and solid upper belt (is rigidly connected along the length of), with creation of eccentricity of attachment of support brace to upper belt of truss, which reduces force (bending moment) in upper belt. The said technical result is achieved in rafter truss, made with rare grid and containing upper dvuskatnyi belt from double section, connected with lower belt of doubled sections by means of supporting braces of doubled sections, braces and post, at the same time support struts are located at an obtuse angle to lower belt and with formation of eccentricity of attachment to upper belt. 4 3. u. 2 cl, 2 dwg. |
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