TRUSS STRUCTURAL MATERIAL

PROBLEM TO BE SOLVED: To provide a structural material excellent in a design by enabling a structural system having proof stress capable of constructing a wide space to consist of a material having high productivity in compliance with requests, a construction period to shorten, weight to reduce and a construction cost to cut down by occupational integration. SOLUTION: Upper and lower chords forming a truss are divided so as to make bilateral symmetry on a parallel plane in the longitudinal direction, a plane for making friction joint of a tie material is provided to the divided surface to be divided, a tie material mounting bolt hole passing through the outside of the chords from the plane is prepared, and a truss structural material integrally extrusion molded is provided to each of shapes having an upper surface ancillary mounting section on the upper part of the plane of the upper chord and a lower surface ancillary mounting section on the lower part of the plane of the lower chord. COPYRIGHT: (C)2004,JPO