How To Cross Brace Roof Trusses

The rafters are nailed to the vertical supports but those supports are not laterally braced.

How to cross brace roof trusses.

Some bracing provides a way to put up the trusses evenly while holding them and other bracing supports them after they are put up. Install 2x4s at a 45 degree angle. You can see the two diagonal braces on the underside of the deck floor joists. Wind bracing truss clusters at both gable ends and at least every 20 add wind bracing green for truss clusters.

Lifting trusses higher than one story may require a crane. Drive no less than two 16d galvanized nails through the brace at each floor joist. Stagger top and bottom cord bracing so the lumber ends on different trusses for additional rigidity as you work your way down the building. For a full explanation of the western wood truss association recommendations download the full.

Be sure the nails have the proper coating to match the treated lumber you re using to prevent corrosion. Use a t brace to support the truss vertically. Without bracing it is almost impossible to install trusses. Turn the truss upside down and place on corner on the roof surface.

Then nail the brace securely to the other trusses. Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover. Nail braces vertically every 4 feet along the top and bottom of a gable truss. Step 3 brace first truss to ground.

The cross braces sit on top of the vertical supports but are not fixed to it they are nailed at each end to rafters. Visual 3d description of lateral anchor and bottom bracing. When several trusses are in place nail the end of the brace over the second gable end truss. It is very important that the contractor or homeowner responsible for truss erection read through all documents inside the job packet.

Trusses which are not braced or which are not braced correctly are subject to toppling over or collapse. The flooring joists appear to run the full width of the roof laterally bracing the rafters. Bracing of trusses is extremely important. 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.