| 摘要 |
<p>A load sharing structure of timber trusses and bridging beams is arranged such that both the top and the bottom faces of the bridging beams are in a face-to-face engagement with the respective parts of the trusses through which the beams pass. A timber truss for use in the structure comprises an upper chord, a lower chord and a zig-zag arranged web members therebetween. The web section of the truss further includes generally vertical reinforcement beams, each of the beams being provided at one side thereof with ledge means for supporting a bridging beam of a load supporting structure of the type of a roof or floor structure of a building or the like. The ledges in the vertical beams, together with bridging members, increase the resistance of the overall structure against vertical components of the load. The system has a slightly higher factor of safety than normal trusses of the type.</p> |
