Box Truss Floor Joist - Ok to trim? 1

[jdubs88]

I am working with a builder who is removing an exterior wall for an addition and installing a LVL over the opening. There are box truss floor joists running perpendicular and need to tie into the LVL. In order to do that, the box trusses will need to be trimmed back about 3.5" to make room for the new beam. I have not had a situation like this and have two questions:
1) Is it appropriate to trim back the truss, cut the diagonal brace so it still lands in the new corner, replace the (2) 2x4 vertical members, and attach plywood on both sides of the truss to act as a new gusset (see attached sketch)?

2) If #1 is proper procedure, we would install a L4x4x5/16 angle near the bottom of the LVL to act as a ledger for the box trusses. Is there any danger in installing this ledger that close to the bottom of the LVL (see sketch)?

 

[jdubs88]

Revisiting this topic as construction is almost completed. The framer deviated from the plan slightly and I am trying to determine if I should approve or design a fix. The (2) vertical 2x4's at the end of the chord truss were supposed to be cut and sat on top of the LVL. He decided to move the LVL outward so now only (1) of the vertical 2x4's is bearing on the LVL along with a rim board. He put a miter on the adjacent (2) 2x4's and they do not touch the diagonal chord and are there to give stability to the bottom chord.

Should I be concerned there is only 1.5" of bearing from the single 2x4? Or will that still provide enough bearing?

Design

Actual

 

[jayrod12]

I'd be having them add flush mount hangers. Picking up those other 2 vertical 2x4 and minimizing eccentric load in the truss plate by fully supporting the end of the truss.

 

[KootK]

I also vote for repair.

 

[XR250]

I usually put the beam on the exterior in these situations. No shoring required - just HU410 hangers. The beam can be supported on the new sidewalls of the addition or furring. The house footing can be undercut by the addition footing if the load is high. A matching thickness pony wall can be built on top to hide the beam and support the new addition roof framing, if needed.
Some challenges can be having to taper cut the end of the LVL to keep it from poking out of the addition roof - depending on the roof framing configuration.