Quote:
Originally Posted by dad911
Probably broken pipe. That video was shot at street level, ramp down to parking.
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That water wasn’t under pressure, it was draining from above. There may have been a broken pipe, but it was in another area. That makes me wonder if the upper floor of the garage flooded for some reason, the water collected in the middle where it was previously known to pond and then the weight of the water precipitated the collapse of the slab. That slab seems to have collapsed before the building, which makes me think that a column or two may have been damaged when the slab collapsed and that was what precipitated the rest of the building to come down.
Early days, but I wouldn’t bet against that possibility.