BRACING (continued)
 
BOTTOM CHORD (TIE BEAM) BRACING
 
Bracing in the plane of the ceiling is required for light roofs where winds can generate uplift forces or in the case of cantilevered trusses where the bottom chord is placed in compression. A brandered ceiling will provide adequate resistance for small domestic roofs and in cases where such a ceiling is present, the bottom chord bracing may be omitted.
 

 

Prefabricated bracing frames may be required to provide stability to the bottom chords of long cantilevers.

 

 Prefabricated frames at Airlington Grand Stand, Port Elizabeth.