Graphical Construction Glossary >> Roofs and roofing. >> Roof Trusses >> knee brace

Knee brace
A brace between a post and beam, the bottom chord of a roof truss and the support, or a stiffener in a portal frame.

knee brace
In the photo above the knee-brace is marked 5. It is the angled brace between the column and the rafter.

knee braced truss

As in everything to do with structural engineering small items can mean a lot. The truss on the right is able to span a longer distance than it's counterpart without the braces.

Where looks are not important these braces can either increase the span or increase the strengthof a design.

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Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
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