Roof Truss Joist Bracing

It is very important that the contractor or homeowner responsible for truss erection read through all documents inside the job packet.

Roof truss joist bracing. Diagonal bracing provides stability by resisting the domino effect of connected trusses. This is where a high pitched roof is necessary. This condition generally applies when trusses are spaced at 2 feet. Once again a 2 by 4 inch piece of lumber is placed between the trusses and parallel to the ceiling joists.

Lifting trusses higher than one story may require a crane. Bracing bracing of trusses is extremely important. It is best to brace the inside of the trusses before handling them. A structural member installed at an angle approx.

Trusses which are not braced or which are not braced correctly are subject to toppling over or collapse. Roof sheathing plywood osb provides effective lateral bracing when sheathing is nailed directly to top chords. Purlins 24 oc are typical along with the bottom bracing shown. A truss to reduce the laterally unsupported length of the truss member.

To strengthen the roof system truss clustering cross bracing and wind bracing is recommended at both end of the buildings and every 20 for longer span buildings. 2 by 4 inch pieces of lumber are attached from each end of this brace to each ceiling joist perpendicular to the ceiling joist forming a wall and supporting each truss. Truss clusters for maximum strength this image shows a cluster of three trusses tied together. This brace needs to be far enough up the trusses to provide headroom and still provide support for the trusses.

Use a t brace to support the truss vertically. Install 2x4s at a 45 degree angle. 45o to a truss chord or. Nail braces vertically every 4 feet along the top and bottom of a gable truss.

Slide the rest of the truss up using a 2x4 as a ramp if necessary.