PRODUCTS
Truss Bracing
Truss
bracing can be divided into 3 groups: temporary, permanent and
individual component bracing.
| Temporary
Bracing: |
Required
to hold the trusses in position until the other bracing
members are installed. The design of temporary bracing will
depend on the roof shape and the type of building, and is
designed by the builder or the project engineer. |
| Permanent
Bracing: |
Holds
the truss assembly plumb and straight and resists lateral
loads on the roof. Permanent roof bracing should be designed
in conjunction with the bracing of the entire frame structure. |
| Individual
Component Bracing: |
Shown
on the truss engineering sheets. Top chords of the trusses
are normally sheathed which provides the bracing for this
component. In the case of steel clad roofs the maximum spacing
of purlins will be specified. Trusses with no sheathing
because they are below the piggy backs or conventional framing
must be strapped at the maximum purlin spacing. |
| Bottom
Chord Bracing: |
Specified
as 2x material at intervals along the bottom chord. These
braces are positioned on top of the bottom chord. |
| Web
Bracing: |
Shown
on the engineering two ways; as lateral bracing which will
connect 3 or more web members of 3 or more trusses to prevent
buckling of the web, or as a 'T' brace, which is a 2x member,
nailed along the length of the web. |
See
the engineering page for more information on where to find web
bracing requirements.
Note: Roof truss bracing is an important component of the complete
building structure. This guide is a general suggestion only.
Builders should consult the project engineer or other authority
having jurisdiction for specific details on their building bracing.
Diagrams: (Click on images to view more details.)