Roof Trusses Wind Brace

Install 2x4s at a 45 degree angle.

Roof trusses wind brace.

Now that the trusses are installed i make sure all the poles are plumb and headers are straight. This condition generally applies when trusses are spaced at 2 feet. Bracing bracing of trusses is extremely important. Wind bracing keeps the roof trusses upright and square to the roof basically they stop the roof from being blown down when its being constructed but more importantly when its tiled.

Roof bracing is a pre punched v shaped component that fixes in an x or v pattern to the top of the top chord to firmly brace roof trusses to the building frame. Truss stability bracing this is permanent bracing which holds the trusses upright straight and prevents any out of plane buckling of the members. The images below show these critical components and their recommended placement. It is very important that the contractor or homeowner responsible for truss erection read through all documents inside the job packet.

Roof sheathing plywood osb provides effective lateral bracing when sheathing is nailed directly to top chords. A structural member that stiffens a structure against the forces of the wind. Use a t brace to support the truss vertically. Wind bracing should be placed at 30 60 angles.

Roof bracing must be applied in opposing directions with the number location and tie down of bracing units to be determined as described in the relevant standard. The old timber wind bracing as shown in this sketch using say 150 x 35 to 100 x 50 is just about redundant. If its a truss roof then wind bracing is important when they design the roof they also design a wind bracing plan so the wind braces are positioned correctly. Trusses which are not braced or which are not braced correctly are subject to toppling over or collapse.

Alternatively start the first truss 8 to 12 ft. Wind bracing truss clusters at both gable ends and at least every 20 add wind bracing green for truss clusters. In from the gable end and brace it to the deck. Nail braces vertically every 4 feet along the top and bottom of a gable truss.

Then i go through and install my runners along the bottom. Then work away from the braced end filling in the open 8 to 12 ft. It is best to brace the inside of the trusses before handling them. Start several trusses in.

This can be done by bracing from the floor deck as shown below. Wind or wall bracingthis bracing is installed in the roof in addition to the truss stability bracing and its purpose is to stabilise the gable walls under the action of wind loading. Sloping top chord of roof trusses must resist compression force due to gravity downward load on the roof such as snow load.