@SocklessJ: A portion of pool deck/upper parking that is collapsing due to punch-through of its supporting column(s) could easily give a firm yank to to any remaining supports, potentially destabilizing them and allowing the collapse to spread progressively. The pool deck slab terminates at the...
There's a TV news interview out there of with 3rd party testimony from someone on the phone with a victim who was complaining right before the collapse about the pool patio area sinking. (Edit 6/26/21: I am referring to the video link posted by Jon43442, above, where the interviewee at 1:30 says...
