Brace Attic Trusses

Without bracing it is almost impossible to install trusses.

Brace attic trusses.

Chevron bracing on occasions where this type of bracing is needed it usually covers a minimum of three truss webs half way to the apex of the truss at approximately a 45 degree angle. Start several trusses in. Truss clusters for maximum strength this image shows a cluster of three trusses tied together. Slide the rest of the truss up using a 2x4 as a ramp if necessary.

Nail them to the rafters and angle nail the center support to the top edge of the horizontal brace. See product data sheet no 3 for more information. Nail braces vertically every 4 feet along the top and bottom of a gable truss. Many a carpenter has been killed or seriously injured when roof trusses suddenly collapse as they re erected.

Section last after permanently bracing the rest of the trusses. Ceiling bracing this is only specified on our designs when no plasterboard is directly fixed to the underside of the trusses. Use a t brace to support the truss vertically. Some bracing provides a way to put up the trusses evenly while holding them and other bracing supports them after they are put up.

Then work away from the braced end filling in the open 8 to 12 ft. Temporary bracing this is used to restrain the trusses during erection. Cut a 2 by 4 to fit horizontally from rafter to rafter on each truss. 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. Alternatively start the first truss 8 to 12 ft. Turn the truss upside down and place on corner on the roof surface. Cut the ends to the same angle you used for the pony wall studs.

Lifting trusses higher than one story may require. Truss stability bracing this is permanent bracing which holds the trusses upright straight and prevents any out of plane buckling of the members. Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover. Use 1 by 4 inch boards called purlins as temporary braces for rafter trusses.

Wind can easily push them over without bracing. 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. The functions of roof bracing roof bracing performs three distinct functions. Use a hammer to knock the bottom end loose.

Cut any diagonal braces in the truss with a reciprocating saw. In from the gable end and brace it to the deck. Purlins 24 oc are typical along with the bottom bracing shown.