New opening in existing wall

[JStructsteel]

All,
any comemnts on this detail. Customer wants new opening, wants to install LVL first, then cut studs. 16'-0" opening. older house, floor joists nailed to side of studs, studs balloon framed to roof.

Thoughts?

 

[Tomfh]

You could add a 2x4 ledger between the studs face nailed to the LVL to help support the joists for some belt and suspenders.

This is a good idea to help make an overall more robust joint. It’s easy, and it adds separate perpendicular shear planes.

 

[SWComposites]

Is the LVL sizing controlled by strength or deflection? Hopefully you used a very conservative deflection requirement for this new beam. Seems like there could be a lot of loading going into this beam - second floor, second story roof, shed roof, etc.

 

[Tomfh]

Good point. You want a few mm sag at most.

This is a problem with doing it this way is you can’t preload the beam at all. The floor/wall/roof above has to sag to start loading your beam.

 

[JStructsteel]

Its controlled by deflection. its about 0.2" dead load deflection. I think I was conservative with the DL amounts too. So hopefully will be minimal