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Ribbon Boar
Ribbon Boar
ds, Str
ds, Str
ongbacks and Fir
ongbacks and Fir
e Cut Ends
e Cut Ends
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• Ribbon Notches – Floor truss ends can have a
notch built into the top of the truss end, the
bottom of the truss end, or both. The purpose
of these notches is to help the framer line up the
trusses. By putting a 2x4 board at the end of the
first few trusses, the remaining trusses can
easily be slid into place when they hit the
ribbon board.
• Strongbacks – A strongback helps to distribute
the loads on a floor truss, thereby helping
reduce the "bounce" the floor system might
otherwise have. Strongbacks are typically
specified every 10' to 11' across a floor truss. As
you can see in the image above, a strongback
has been attached to the verticals of the longer
floor trusses.
• Fire Cut Ends – In some cases, floor systems
will be required to keep the top chord of
the truss back away from the end
wall. In such circumstances,
a firecut end can be provided,
as shown here.
