Bracing & Restraint

Gable End Bracing

Question: 

Is there a detailed table for gable studs that gives the maximum length a vertical member can be before a lateral brace is required?

Scissors Truss Diagonal Bracing

Question: 

We are finding it difficult to design permanent diagonal bracing for scissors trusses. The truss is often only a few feet in depth, which does not provide adequate room for diagonal bracing. Has SBCA come up with recommendations for permanent bracing of scissors trusses?

Installation Guidelines

Question: 

Are there any associations that have recommendations for the installation of wood trusses?

Proper Bracing Of Valley Framing

Question: 

It is critical that permanent top chord bracing is supplied by proper nailing of the valley truss bottom chords to the carrying truss top chords, through purlins or properly installed rated roof sheathing. If the sheathing is not carried through under the valley framing, then the permanent top chord bracing must be supplied in another manner.

Construction Loads On Floor Truss Assemblies

Question: 

How much OSB can be stacked on a floor deck without damaging the trusses?

Long Span Truss Installation

Long span trusses can pose significant risk to installers. The dimensions and weight of a long span truss can create instability, buckling and collapse of one or many trusses, if not handled, installed, restrained and braced properly. As such, they require more detailed safety and handling measures than shorter span trusses. This research report provides guidelines for proper handling and installation of long span trusses for both wood and cold-formed steel.

Use of Resilient Channel or Hat Channel to Meet the Lateral Restraint/Bracing Requirements of the Bottom Chords of Wood Truss Floor Systems - Educational Program

This presentation provides information on and requirements for the use of metal channel to meet lateral restraint/bracing requirements for metal plate connected wood trusses.

Parting Shots

NFC member shares proper bracing in action.

Resilient Channel or Hat Channel: Use to Meet the Lateral Restraint/Bracing Requirements of the Bottom Chords of Wood Truss Floor Systems

Minimum top and bottom chord permanent lateral restraint/bracing of structural roof or floor trusses is assumed to be adequate when using code-compliant roof and/or ceiling diaphragms. This lateral restraint/bracing is typically accomplished with code-compliant roof /floor sheathing and fastener spacing and/or code-compliant gypsum ceiling material and fastener spacing or purlins at a given on-center spacing.

Planning Ahead: What Issues Should SBCRI Explore?

The Industry Testing Subcommittee is making plans to keep SBCRI busy in the coming year.