Roof Truss Bottom Chord Repair

The horizontal beam of the triangle of a bottom chord is used in this simple triangle truss construction.

Roof truss bottom chord repair.

Standard repair detail for permitting the removal of a section of bottom chord of a valley truss. If the truss is already installed shore up the truss to relieve any load. Temporarily screw a 3 foot 2x4 to the bottom of the sagging truss so that the 4 inch side of the 2x4 is flat against the bottom of the truss and in the center of the sag. When damaged or altered this can effect structural integrity of th e roof system.

Roof truss damage and repairs. Frankly it would probably have been cheaper to build a new garage rather than monster the existing one and now have to repair it. It is utilized in a framed roof comprised of rafters and a ceiling joist. It has been cut adjacent to a node point.

Standard repair detail for permitting the removal of a section of. To my thinking a truss with a cut bottom chord is useless. It would have been less work to remove the roof and then re truss leaving the bottom chords in place to support the walls until the new roof framing is on. A domestic roof engineered truss has had the bottom cord cut to install an attic access hatch door.

Make sure to use the correct materials as specified. Roof truss uplift occurs when the bottom chord of the truss is exposed to significantly different moisture or temperature conditions than the rest of the roof truss. Repair the truss by following the information provided in the trdd exactly. Cut bottom cord of engineered truss.

To repair the damaged truss would be to lose the attic access unless the truss was designed. Prior to beginning the repair lay the truss flat on a solid level surface. Place a screw jack found at any hardware store between the 2x8 on the floor of your attic and the sagging truss where the 2x4 is attached. Standard repair detail to pad top chord to match roof plane 2 1 2 maximum.

Localized damage to one or two trusses will typically not result in structural failure of the roof system but could cause the. The stability of this shape supported by the bottom chord is the reason for the common usage of the triangle truss. Seek professional guidance if anything is unclear.