Brace Attic Trusses

Temporary bracing this is used to restrain the trusses during erection.

Brace attic trusses.

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. Truss clusters for maximum strength this image shows a cluster of three trusses tied together. Turn the truss upside down and place on corner on the roof surface.

See product data sheet no 3 for more information. In from the gable end and brace it to the deck. 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.

Section last after permanently bracing the rest of the trusses. Use a t brace to support the truss vertically. Wind can easily push them over without bracing. Start several trusses in.

Cut any diagonal braces in the truss with a reciprocating saw. Then work away from the braced end filling in the open 8 to 12 ft. 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. 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.

Lifting trusses higher than one story may require. Nail braces vertically every 4 feet along the top and bottom of a gable truss. Cut the ends to the same angle you used for the pony wall studs. Many a carpenter has been killed or seriously injured when roof trusses suddenly collapse as they re erected.

Purlins 24 oc are typical along with the bottom bracing shown. This can be done by bracing from the floor deck as shown below. Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover. Slide the rest of the truss up using a 2x4 as a ramp if necessary.

Use a hammer to knock the bottom end loose. Alternatively start the first truss 8 to 12 ft. Use 1 by 4 inch boards called purlins as temporary braces for rafter trusses. Cut a 2 by 4 to fit horizontally from rafter to rafter on each truss.

Nail them to the rafters and angle nail the center support to the top edge of the horizontal brace. Diagonal bracing is really important if you re working with roof trusses on that upcoming room addition. Ceiling bracing this is only specified on our designs when no plasterboard is directly fixed to the underside of the trusses.