The pool might have cracked as a result of the collapse.
The problem may not have been the pool, but its plumbing.
Water bills might tell the tale.
Pool is reported to have been continually leaking and in need of continuous repair. It is an above ground pool, resting on the lower floor of the parking garage. The entire pool deck is the roof of the lower garage area, as shown in the photos. The entire deck collapsed.
Chlorine pool water seeping into garage for years?
Reports are also that the lower garage had continuous standing water even though it hadn’t rained.
Details slowly emerging.
Finally they’re reporting about getting around to examine the two sister buildings, which are the same as this one, 2 & 3 buildings North