ERECTION TRUSS Russian patent published in 2000 - IPC

FIELD: construction industry; applicable as load-carrying structure of framework of lattice hydrometric bridges and as principal in floors of buildings and structure. SUBSTANCE: erection truss has nonparallel top compressed chord and bottom extended chord, rods of lattice, posts and also additional posts and braces. Each additional post is secured to brace beyond joint by one end, and with its other end, it is connected to bottom chord, also beyond joint. In this case, lengths of panels are reduced from middle of span to support. Braces and additional posts are located only in truss span middle part and have smaller cross-section than truss rods conjugated with them. One part of braces is fastened to posts at an angle of 45 deg beyond joint and their other end, to bottom belt, also beyond joint. The other part of braces is fastened to braces beyond joint and their other end, to top chord also beyond joint. Points of fastening to chords of braces and additional posts are found from the nearest joints at a distance of 1/6 of panel length. EFFECT: higher rigidity of truss. 3 dwg, 1 tbl