Roof Truss Gable End Bracing

Gable end walls need to be well connected to the wall below and to the roof structure or ceiling diaphragm.

Roof truss gable end bracing.

Slide the rest of the truss up using a 2x4 as a ramp if necessary. The use of full height wall studs from floor to roof line might be considered to eliminate the need for bracing top of wall below gable endwall. Lifting trusses higher than one story may require a crane. There are several methods for making these types of connections.

Gable end walls and the roof sheathing at the gable end can take a tremendous beating during a hurricane and if not properly attached and braced they fail. The top and bottom of the gable end so that lateral loads are transmitted into the roof and ceiling diaphragms by the use of horizontal braces making connections between horizontal braces and retrofit studs by the use of straps and connecting the bottom of the gable end to the wall below to. Begin with the second gable end truss and work back towards the first gable end. Stagger top and bottom cord bracing so the lumber ends on different trusses for additional rigidity as you work your way down the building.

Trusses which are not braced or which are not braced correctly are subject to toppling over or collapse. However for design wind pressure lateral deflection of such studs without lateral bracing may still be enough such that the ceiling will attempt to act as a brace. It is very important that the contractor or homeowner responsible for truss erection read through all documents inside the job packet. In the attic go to the gable end and examine the area where the triangular wall meets the rectangular wall below.

Wind bracing truss clusters at both gable ends and at least every 20 add wind bracing green for truss clusters. The images below show these critical components and their recommended placement. This is done by plumbing the truss and securing as described above for the first gable end. Turn the truss upside down and place on corner on the roof surface.

Article from structure magazine. The best way to find the answer to your specific situation is to call your truss designer to discuss the gable end bracing details for your project. Wind bracing should be placed at 30 60 angles. The truss designer may suggest using l braces along the length of the individual verticals or horizontal braces that must be stabilized with a diagonal brace that extends into the diaphragms see figure 2.

Bracing bracing of trusses is extremely important.