Roof Truss Lateral Support

Wind bracing should be placed at 30 60 angles.

Roof truss lateral support.

Roof sheathing plywood osb provides effective lateral bracing when sheathing is nailed directly to top chords. This condition generally applies when trusses are spaced at 2 feet. The clr must be properly braced to prevent the simultaneous lateral deformation and or buckling of the series of truss members to which it is attached due to laterally imposed loads on and or the accumulation of buckling forces within the. Workshops warehouses industrial buildings etc.

Certain truss members require bracing in order to carry the full design load. Continuous lateral brace clr. Part of a truss that extends beyond its support exclusive of overhang. In this situation the walls of a finished attic space or room would go with the roof line.

When truss spacing exceeds 2 feet purlins are generally required to support roof sheathing. Continuous lateral bracing or restraint is very important. Also need sloping roofs and hence roof trusses. The images below show these critical components and their recommended placement.

Permanent bracing listed on the truss design drawing for specific web members and permanent bracing for the roof or floor system. There are two separate types of bracing to be concerned about. At both gable ends and at least every 20 add wind bracing green for truss clusters. A line of continuous structural members to a chord or web member of a truss to reduce the laterally unsupported length of the truss member.

The number of trusses clustered depends on building span and truss spacing.