| 摘要 |
A building truss for supporting a sloped roof is described. The truss may include a lower beam, an upper rafter and a strut connecting the rafter to t he lower beam. Each of the rafter and beam may include a metal chord, located i n a first plane. Each strut may include a metal chord located in a second plane parallel to the first plane. There may be a connection between a lower end o f the strut chord and the beam chord. There may be a connection between an upper end of the strut chord and the rafter chord when the truss is fully assemble d. A first of the connections may be a pivotal connection having a pivotal axis orthogonal to the planes, which permits, when a second of the connections is disconnected, side-by-side pivotal movement of the strut chord relative to a t least one of the other chords of the truss.
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