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'Experts' Originated Steel-Melting-Fires Claim

Richard Ebeltoft, a structural engineer and University of Arizona architecture lecturer, speculated that flames fueled by thousands of gallons of aviation fuel melted the building's steel supports.
-- wildcat.arizona.edu

Hyman Brown, a University of Colorado civil engineering professor and the Trade Center's construction manager, speculated that flames fuelled by thousands of litres of aviation fuel melted steel supports.

"This building would have stood had a plane or a force caused by a plane smashed into it," he said. "But steel melts, and 90,850 litres of aviation fluid melted the steel. Nothing is designed or will be designed to withstand that fire."
-- sunTimes.co.za

Each tower was struck by a passenger aeroplane, hijacked by suicidal terrorists, but remained upright for nearly an hour. Eventually raging fires melted the supporting steel struts, but the time delay allowed hundreds of people to escape.
-- NewScientist.com

[Professor of Structural Engineering at the University of Newcastle, John Knapton] told BBC News Online: "The 35 tonnes of aviation fuel will have melted the steel... all that can be done is to place fire resistant material around the steel and delay the collapse by keeping the steel cool for longer."
-- news.bbc.co.uk

Kevin Ryan points out several more examples:

  • Scientific American (Eduardo Kausel)
  • NOVA video (Matthys Levy)
  • Henry Koffman from USC
  • Tom Mackin from Univ. of Illinois
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