Roof Truss Bottom Chord Bracing

Buildings with suspended ceilings require additional bracing to ensure the lateral stability of the walls.

Roof truss bottom chord bracing.

For an efficient layout of the truss members between the chords the following is advisable. The stabilizer shown in red truss brace on the bottom chord as required by tdd. Or less per tdd. Diagonal braces are required at each end of a truss row and repeated every 10 truss spaces 20 maximum.

Diagonal restraints are restraints placed between lateral restraints in the same plane and. Bridging is a restraint between the. By the use of strategically located x bracing loads from the endwalls and truss bottom chords can be transferred into the roof diaphragm. Use a t brace to support the truss vertically.

Answer permanent building stability bracing of trusses and anchorage to the building individual truss member lateral restraint and diagonal bracing. Diagonal bracing installed for the purpose of increasing the stability of the truss system during installation shall be installed on web members verticals whenever possible located at or near each row of bottom chord lateral restraints. The bottom chord ties and bracing are intended only to restrain i e. Roof truss bottom chord bracing properly designed and installed will not only keep the trusses in plane standing upright but will also brace the endwall columns.

See web restraint application on bottom left 15 0 o c. Nail braces vertically every 4 feet along the top and bottom of a gable truss. The inclination of the diagonal members in relation to the chords should be between 35 and 55 point loads should only be applied at nodes the orientation of the diagonal members should be such that the. Install 2x4s at a 45 degree angle.

To stop from buckling truss bottom chords and do not provide lateral stability to the building to resist lateral wind loads. Turn the truss upside down and place on corner on the roof surface.