Brace Attic Trusses

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.

Brace attic trusses.

Alternatively start the first truss 8 to 12 ft. The functions of roof bracing roof bracing performs three distinct functions. Section last after permanently bracing the rest of the trusses. The help of a second or third person is necessary even to lift a truss onto a single story roof.

Use a t brace to support the truss vertically. See product data sheet no 3 for more information. Start several trusses in. Some bracing provides a way to put up the trusses evenly while holding them and other bracing supports them after they are put up.

The remainder of the trusses should. Use a hammer to knock the bottom end loose. Nail these temporarily to the outside edges of the rafter sides starting with the third truss. 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. Once the roof trusses are stacked into a place they can be positioned one at a time. Begin with the second gable end truss and work back towards the first gable end. Use 1 by 4 inch boards called purlins as temporary braces for rafter trusses.

Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover. Truss clusters for maximum strength this image shows a cluster of three trusses tied together. Nail them to the rafters and angle nail the center support to the top edge of the horizontal brace. Truss stability bracing this is permanent bracing which holds the trusses upright straight and prevents any out of plane buckling of the members.

This is done by plumbing the truss and securing as described above for the first gable end. Purlins 24 oc are typical along with the bottom bracing shown. 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. In from the gable end and brace it to the deck.

Temporary bracing this is used to restrain the trusses during erection. Step 2 lift trusses onto roof. Cut a 2 by 4 to fit horizontally from rafter to rafter on each truss. Install 2x4s at a 45 degree angle.

Without bracing it is almost impossible to install trusses. It is best to brace the inside of the trusses before handling them.