Winstonm, on Apr 22 2009, 12:49 AM, said:
Fire has never before been the cause of total collapse; but demolition has been the cause of many total collapses; so the most likely scenario is that something that has never before happened occured 3 times in one day?
How many times where buildings hit by big airplanes before?
What about the McCormick Place Exhibition Center 1967?
http://en.wikipedia....McCormick_Place
Quote
The 1960 exposition hall was destroyed in a spectacular 1967 fire, despite being thought fireproof by virtue of its steel and concrete construction. At the time of the fire, the building contained highly flammable exhibits, several hydrants were shut off, and the sprinklers proved inadequate. Thus the fire spread quickly and destructively, taking the life of a security guard.[3] A subsequent investigation found major flaws in the design and construction of the building, and led to a much better understanding of how modern steel and concrete structures can be vulnerable to fire.
Burning a big airplane inside a building is similar to this event.
Or the Windsor Tower in Madrid
http://en.wikipedia....indsor_BuildingQuote
The Windsor Tower (in Spanish Torre Windsor) was built in 1979 in the financial center of Madrid, Spain. This office building was 106 m high and had 32 floors of which 29 were above ground level and 3 below, thus ranking it as the eighth tallest building in Madrid (and 23rd in Spain). It was gutted by a huge fire on February 12, 2005, and partially collapsed; it has since been demolished.
Even without crashing an airplane into a building and burning tons of jet fuel a fire can collapse a building.
Or the Partial Freeway Collapse in Oakland/Emerville CA 2007:
http://www.foxnews.c...,269196,00.htmlQuote
The elevated section of highway that carries motorists from the San Francisco-Oakland Bay Bridge to a number of freeways was destroyed early Sunday when the heat of a burning gasoline tanker truck weakened part of one overpass, crumpling it onto another.
"Burning fuel" ... "weakened structure", does that sound familiar?