Download PDF version (342.8k) Log In or Register to view the full article as a PDF document.
Truss Collapse Domino-style truss failures can be catastrophic. Good bracing and quality control by the fabricator are essential. reduce strength, primarily because of the diagonal tension that results from the shear. The stress configuration in wood trusses is anything but precise. At the joint in question, the bottom chord was theoretically in tension, and the diagonal web and the top chord were in compression. But because gusset plates restrain movement at the joint, there were also local bending and shear stresses in the plate and in the members that met there. In addition, trusses are subjected to all kinds of stresses while being transported and lifted into place. These include stress reversals, torsion, localized stress concentrations, and- The wood truss is a