Permanent bracing is simply a form of bracing that will be installed in the roof as a permanent part of the roof system. There are a few different types of bracing that we use at Kamloops Truss; continuous lateral bracing, T-bracing, L-bracing and scabs.
Continuous Lateral Bracing
The most common form of permanent bracing is continuous lateral bracing. This is a member placed and connected at right angles to a chord or web to prevent it from buckling under design loads. It is very important to the integrity of the trusses. Without it, members of the truss may buckle at loads far less than what they were designed to support.
T-bracing is just as it sounds – taking two 2×4 or 2×6 webs of the same size, nailing it on it’s side and creating a cross-section that looks like a T. The advantage to this is less material waste by eliminating all laterals and diagonals. It also creates more integrity of the truss, and is safer for the framers to stand up.
L-Bracing is also as it sounds, creating an L shape rather than a T at it’s cross-section. It too eliminates the waste of excess materials, and creates a better integrity of the trusses.
A supplied truss certificate will indicate if permanent bracing is required. If it is, we will ensure that it’s done correctly. In addition to the bracing prescribed in the truss certificate, all roof trusses are designed to have continuous lateral bracing on their top chords. This will be in the form of either roof sheathing or purlins. Bottom chords, though, must be braced by continuous lateral bracing at 10′ on center. If the centers are closer together, another form of bracing will work without harming the integrity of the truss itself.
If you ever have any questions about permanent bracing, the different types, or just trusses in general – please don’t hesitate to ask! We are available by phone at 250-374-3330, via email, or via our e-form!