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A steel-framed building is not likely to fall even enveloped in flame. When the Mandarin Oriental burned in February of 2009, Comparisons with World Trade Center fires were inevitable.
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On September 11, 2001, World Trade Center 7 collapsed into its footprint.
Two airliners had crashed into the twin towers, buildings 1 and 2, at 8:46 and 9:03 AM respectively.
On the far side of the 8-story building 6, and across Vesey Street, about a hundred meters away from the towers, the 47-story Salomon Brothers building (World Trade Center 7) started burning in at least one small area.
At 5:21 P.M., it fell — straight down.
There are occasions when steel buildings fall straight downward. The sequence of events requires the loss of support along horizontal planes. World Trade Center 7 fell as if it was destroyed by controlled demolition.
It would likely take longer than a day for any demolition crew to prepare the orderly destruction of a large steel frame.
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