We cannot get a TJI 9.5 110 series at over 36′ length, and our little plan has some long runs.
So, we are thinking of doing butt joints over some intermediate bearing wall situations.
The wallframes are 2×4, so we thus get the min 1.75″ end bearing specified by TrusJoist, if we center the butt over the walls.
We’re thinking of blocking like this.
The bottom and side chunks are 2×6, which serves also to give us some ceiling finish backing. The diaphragm block is a rip from 2×10.
I’m waiting for a reply from one of TrusJoist’s engineers.
Have you buttjoined I-joists over intermediate bearings? What did you do?