Brace Attic Trusses

Start several trusses in.

Brace attic 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. Brace other rafters as they are installed down the roof by nailing temporary 2 by 4 supports to rafter edges and to roof joists if rafters are being installed separately. The remainder of the trusses should.

Cut any diagonal braces in the truss with a reciprocating saw. Cut a 2 by 4 to fit horizontally from rafter to rafter on each truss. To strengthen the roof system truss clustering cross bracing and wind bracing is recommended at both end of the buildings and every 20 for longer span buildings. Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover.

See product data sheet no 3 for more information. Nail them to the rafters and angle nail the center support to the top edge of the horizontal brace. It is best to brace the inside of the trusses before handling them. Without bracing it is almost impossible to install trusses.

Use a t brace to support the truss vertically. The functions of roof bracing roof bracing performs three distinct functions. Truss stability bracing this is permanent bracing which holds the trusses upright straight and prevents any out of plane buckling of the members. This can be done by bracing from the floor deck as shown below.

Nail these temporarily to the outside edges of the rafter sides starting with the third truss. Truss clusters for maximum strength this image shows a cluster of three trusses tied together. Bracing the second gable end is advisable. Cut the ends to the same angle you used for the pony wall studs.

Purlins 24 oc are typical along with the bottom bracing shown. Section last after permanently bracing the rest of the trusses. In from the gable end and brace it to the deck. Use a hammer to knock the bottom end loose.

The help of a second or third person is necessary even to lift a truss onto a single story roof. Then work away from the braced end filling in the open 8 to 12 ft. Alternatively start the first truss 8 to 12 ft. This is done by plumbing the truss and securing as described above for the first gable end.

Begin with the second gable end truss and work back towards the first gable end. Step 2 lift trusses onto roof.