I've had multiple professionals look at this wall, and no one has been able to give me a clear answer (2 home inspectors, and 1 structural engineer). So I've come to the source of all truth, the Internet.
The diagram of what's happening appears to be simple, but as a not-structural-engineer, I can't tell where the load from the roof downward is being applied. Obviously, my long-term game plan here is to remove the wall.
See below - assume that the joists/rafters/collar ties continue regularly: (please let me know if there's more I can diagram)
- Is the wall in question load-bearing?
- If it is load-bearing, how do I go about calculating the lineal per foot load (e.g. "what size beam do I need for a 13' span")? I have precise measurements available & dead/live psf loads, but because the structural load seems difficult in this case I'm having a lot of trouble determining what size beam would be required for the expected load & span.
Please let me know what additional info I can provide - I have measurements & photos I can reference.