Quote:
Originally Posted by Aktungbby
Rate of building sinkage at 2 millimeters a year comes to .07 inches a year since the nineties...aprox. 2 inches max on reclaimed wetlands with or without pool leakage. My bet is: the complete pancaking succession of 12 floors ala the World Trade Center (100+) floors when jet fuel fires weakened the 1 acre slab floors (98th floor aircraft impact point) was caused by a critical steel support failure of a floor; initiating the sudden collapse with a preliminary amount of shaking as reported by Cassondra Billedeau on the phone to her husband, Michael Stratton as the building collapsed: "She described that the building was shaking and then the phone went dead..." I would consider saltwater corrosion at the ocean-front location to be a factor.
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This. Depending upon the specific steel used, from saltwater intrusion or chlorinated pool water leakage, or even freshwater, the corrosion wouldn't need to be across all of the metal to cause structural failure. The water table in Florida is extremely shallow, so if they cut other corners, the pilings driven into bedrock clue have been corroding from both ends. Weaken the pilings, uneven stresses across a weakened slab, the whole thing can come down.
Of course, there is also the John McAfee stored tons of receipts on government criminality in the building theory, but YMMV...