A rigid framing element installed diagonally or vertically to hold other members apart and resist compressive forces. Struts prevent structural collapse by transferring weight from an unsupported span to a solid bearing point, commonly used in roof trusses, trench shoring, and heavy timber framing.
Heard on the job
The engineer wants a steel strut added between the purlin and the load-bearing wall to handle the extra snow load.
Related terms
Brace up
To install temporary or permanent supports to stabilize a structure.
Strongback
A stiffening member attached perpendicular to framing joists to prevent sagging and distribute loads.
Queen post
One of a pair of vertical timber supports in a roof truss that span longer distances than a single central post.