How To Cross Brace Roof Trusses

Then nail the brace securely to the other trusses.

How to cross brace roof trusses. Diagonal and chevron bracing should pass across each rafter in the roof however small gaps such as two trussed rafters between sets of bracing or one trussed rafter adjacent to gable or separating walls is permitted in the middle of an otherwise fully braced roof. Nail braces vertically every 4 feet along the top and bottom of a gable truss. Trusses which are not braced or which are not braced correctly are subject to toppling over or collapse. The cross braces sit on top of the vertical supports but are not fixed to it they are nailed at each end to rafters.

It is very important that the contractor or homeowner responsible for truss erection read through all documents inside the job packet. Install 2x4s at a 45 degree angle. Visual 3d description of lateral anchor and bottom bracing. Drive no less than two 16d galvanized nails through the brace at each floor joist.

The flooring joists appear to run the full width of the roof laterally bracing the rafters. The remainder of the trusses should be braced with 1x4s. Bracing of trusses is extremely important. Without bracing it is almost impossible to install trusses.

Using the same 24 inch on center measurements that you marked on the wall plates earlier mark each truss for bracing. Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover. Lifting trusses higher than one story may require a crane. When several trusses are in place nail the end of the brace over the second gable end truss.

Turn the truss upside down and place on corner on the roof surface. Slide the rest of the truss up using a 2x4 as a ramp if necessary. Be sure the nails have the proper coating to match the treated lumber you re using to prevent corrosion. The rafters are nailed to the vertical supports but those supports are not laterally braced.

For a full explanation of the western wood truss association recommendations download the full. Step 3 brace first truss to ground. Stagger top and bottom cord bracing so the lumber ends on different trusses for additional rigidity as you work your way down the building. Use a t brace to support the truss vertically.