The complexities of most roof systems built today require a myriad of different truss configurations, resulting in very few trusses having the same web pattern. Several of the Truss Design Drawings show webs that need bracing and call out a lumber lateral brace. How am I supposed to brace the webs when there are only a few cases where I have more than one or two of the same truss web configuration? There are many different ways to restrain the web members in a truss. As long as there are at least two adjacent trusses with the same or similar web configurations, lateral restraint i.
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Toe-nailed connections are often used to attach metal plate connected wood trusses to bearing walls, beams and girder trusses, for the purpose of resisting uplift and lateral forces applied to the truss. This four-page document provides uplift and lateral resistance capacities for toe-nailed connections consisting of two, three, four or five nails for various types of nails and species of wood.
General connection options are also provided when toe-nailing is not enough. Multiple ply girder trusses consist of two or more individual trusses that must be attached to act as a single member.
This document discusses various attachment methods and types of fasteners. Also included is information concerning construction loads, what to do if trusses are damaged or modified, and the special condition of attaching a residential deck to the trusses.
Permanent Bracing must provide sufficient support at right angles to the plane of the truss to hold every truss member in the position assumed for it in the design. Metal plate connected wood trusses are commonly used in post-frame construction. The BCSI-B10 Summary Sheet provides guidelines for the proper handling, installing, restraining and bracing of flat bottom chord MPCW trusses spaced more than two feet on-center in engineered post frame building system applications.
This guide for builders features proper techniques for unloading, storing, lifting, erecting, installing, restraining and bracing trusses. It encourages framers to review the package's contents and follow its recommendations.
The BCSI-B11 Summary Sheet provides guidance to framing crews on how to assess fall hazards while installing trusses on residential construction jobsites. Skip to main content.
Bracing Options for Webs Revisited
Follow the recommendations for handling, installing and temporary bracing of trusses. Truss Design Drawings may specify locations of permanent bracing on individual compression members. All permanent bracing design is the responsibility of the Building Designer. Bundles stored on the ground for one week or more should be raised by blocking at 8' to 10' on center. For long term storage, cover bundles to prevent moisture gain but allow for ventilation.
B3 Summary Sheet - Permanent Restraint/Bracing of Chords & Web Members