Floor Truss Blocking

I joists offer only one bearing condition.

Floor truss blocking.

Hammer your nails. Floor trusses offer four different bearing conditions for a wider variety of uses. The lumber should be the same depth as the joist. Toenail them once that s done.

Along the wall at the top of your photo simply cut blocks that fit snugly between the trusses and toenail them in place. Parallel chord roof trusses and energy heel trusses often exceed a 15 heel height and have need for this more elaborate method of blocking. The multiple bearing conditions make matching existing floor heights much easier when using floor trusses. When the 4x4 block length is extended this is referred to as mid chord bearing.

This allows you to find the distance in lumber you need to cut. For example if you have. A set of plans and specifications will often provide the lateral load the blocking must resist and specify that the truss supplier design the blocking to resist that load. These are the steps to take to install blocking.

Is the combination of roof sheathing gypsum wallboard on the ceiling and a hurricane clip on one side of a truss an acceptable substitution for solid blocking. Bottom chord bearing bottom chord bearing trimmable ends top chord bearing and mid block bearing are all available. Cut the lumber to fit between the two joists. Truss a pre built component that functions as a structural support member.

In the field float blocks under the edge of the remaining subfloor and screw them through the subfloor. Measure the length between the two joists.