about 1 year ago - Shurenai - Direct link
I did a big ol writeup on this not too long ago.
https://steamcommunity.com/app/251570/discussions/0/3371530631540268241/#c3371530631540580882
Read it over, and watch the video linked- The vido is from A15, so it's a bit old, the mass and max load values presented within are going to be inconsistent with current alpha values. But the actual Mechanics of structural integrity haven't changed since the videos creation, so it is still absolutely a great resource for understanding building in 7DTD.