STIFFENING TRUSS Russian patent published in 1997 - IPC

FIELD: civil engineering. SUBSTANCE: construction truss has upper girth made up of two shapes, and located between these shapes at equal pitch are posts attached to them and resting against lower curved girth. Units of lower girth are located along spiral line at spiral curvature radius increasing in direction from props towards span. Angle of conjugation of lower girth to upper girth in supporting unit of truss ensures equal forces acting in lower girth panels, and props are arranged in direction of curvature radius of lower girth. EFFECT: high efficiency. 1 dwg