Brace Attic Trusses

If the bracing is omitted wrongly positioned or badly fixed it may result in distortion or failure of individual trusses or in some instances the whole roof.

Brace attic trusses.

If the roof slope is steeper than 9 inches in 12 inches of run it doesn t take much width to end up with a nice room 12 feet wide with an 8 foot ceiling. Install 2x4s at a 45 degree angle. Bracing responsibility the building designer and not the trussed rafter supplier is. Lifting trusses higher than one story may require a crane.

Nail braces vertically every 4 feet along the top and bottom of a gable truss. First it takes some of the sag deflection out which must not exceed the allowable limit. Fasten rafters or truss ends to the wall caps on each side with framing nails once rafters are plumb. In this picture we see proper attic bracing technique.

I have this above my own garage. The purpose of attic bracing is two fold. Start bracing rafters or trusses on the first end installed. You can strengthen the roof to prevent damage by adding braces to the roof rafters inside your attic.

They are usually placed as close as practical to the center of rafter. You will learn some great tricks for using braces to keep. Cut a 2 by 4 to fit horizontally from rafter to rafter on each truss. Cut the ends to the same angle you used for the pony wall studs.

The web diagonal braces acting together with the top chord and bottom chord temporary lateral restraints form triangulation perpendicular to the plane of the trusses thus creating additional lateral stability for the trusses. Nail long 2 by 4 inch boards to the outside edge of each rafter and to stakes in the ground outside to hold the rafter pair or truss vertically plumb. Use a t brace to support the truss vertically. Slide the rest of the truss up using a 2x4 as a ramp if necessary.

Use a hammer to knock the bottom end loose. Turn the truss upside down and place on corner on the roof surface. This is a fairly basic project that can help protect your roof but consult a structural. Nail them to the rafters and angle nail the center support to the top edge of the horizontal brace.

Cut any diagonal braces in the truss with a reciprocating saw. Trussed rafters must be braced to create a rigid and stable roof structure. In this video we cover how to brace a conventionally framed roof and why it is important to do so. Second it helps to straighten the roof plane if done properly.

The truss designer may suggest using l braces along the length of the individual verticals or horizontal braces that must be stabilized with a diagonal brace that extends into the diaphragms see figure 2.