About the metal fatigue from the heat. There is no doubt that the heat was intense. I could feel it from across a street. While it seemed like it was engulfed in flames for an eternity it was only a matter of minutes. The Fire Control District Report reads this:
Alarm: 11/30/2012 - 11:40:00 AM
Arrival: 11/30/2012 - 11:49:00 AM
Controlled: 11/30/2012 - 11:51:00 AM
Last Unit: 11/30/2012 - 12:14:00 PM
So while the heat was intense and burned all the plastic and rubber it did not last all that long. As I understand it steel subjected to intense heat for a prolonged period of time is what weakens it. It may be wishful thinking on my part but I don't think this was anything close to a prolonged period of intense heat and we are talking about some pretty thick steel here.