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Re: Nova program on World Trade Tower Collapse

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On Mar 28, 2006, at 4:55 PM, Carter, Charlie wrote:

Since you asked, I've pasted the email with my comments below.
Good piece of work. I read some more of the report and I think I understand the differences and why.

The FEA that went into that report was absolutely mind-boggling. The report, like every piece of FEA work I've ever seen, implied that it was a straight-through, here's what we do, job running, post-process and write it up: a linear thinking job from the word go. But I'd be willing to bet that the back checking and tweaking process for proper convergence, correlation and re-tweaking was highly iterative, very intuitive and required a great deal of engineering insight. I'm seriously impressed.

Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw(--nospam--at)   | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania 1864)

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