I have a few concrete shear walls that continue to give me "free-standing" end Error,
Is there some property I need to give a wall that extends past a diaphragm?
Or a specific connection between wall and diaphragm that I have not identified?
Or a detail with respect to creating slab edges? For instance you have to offset the slab from the wall?
If that’s a one-way deck you need beams along the slab edge, and framed to the end of any interior wall. See this for more:
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/4552/ram-ss-common-framing-table-errors-tn
You can ignore framing related errors if the deck is all two-way.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/3262/ramss-two-way-decks-tn
I'm getting the same freestanding wall error on a project where I'm trying to model mezzanine beams bearing on steel perimeter framing on one end and a gravity wall on the other (technically CMU, but that's not an option in RSS). RSS doesn't like the wall extending to the orthogonal perimeter beam, but then if I pull it back to not intersect that beam, I get the freestanding wall error. This is a 1-way deck. So if I'm understanding correctly, the solution is to shorten the wall back from orthogonal beam slightly (like a foot) and then run a beam parallel to the wall from the end of the wall to the real beam. And I could just make that fake beam some small odd size so I can ignore/deduct that from my takeoff. Is that the intended method?
Yes, pull the wall back a tiny bit and span the gap with a gravity beam, It's going to have very little load on it, so the beam could be anything; steel, other, etc.