March 25, 2015
We have built our structural 2×6 wall, installed and taped the plywood air barrier, and have created all of the window boxes. It is now time to attach the 11 7/8″ vertical TJIs to our wall. This TJI cavity will be filled with cellulose and serve as our main insulation layer in our Climate Zone 5 project location. The TJIs are non-bearing and their vertical installation is addressed by Weyerhaeuser TrusJoist TB-821-2014 (comes up on a google search).
Per the advisement of our structural engineer, in the areas where the TJI is not resting on the concrete foundation wall (with a bit of mineral wool sandwiched between), but is instead ‘floating’ we used a light 40 series joist hanger at the base of each TJI. He also called for blocking top, bottom and mid-height.