One source of confusion within the wood truss industry is the difference between a truss repair and a truss modification. Truss repairs can be summed up as restoring a truss back to its original shape and strength in situations where damage has caused a change or a reduction in either. Truss modifications occur when a truss profile, loading, and/or bearing conditions must be altered to fit a situation for which the original truss was not designed. This report will cover the key concepts involved with a truss repair.
Common situations that require repairs include: damage to the truss from storage and delivery, handling, installation, adverse environments, fire, and manufacturing mistakes. Whatever the reason for a repair, the principles followed by the Truss Designer are similar. The truss repair must result in a truss that is able to carry all loads intended for the truss.