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Re: 2002 aisc seismic provisions

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On Mar 10, 2005, at 9:39 PM, Jake Watson wrote:

P.S. I have had many discussions about this matter and freely admit my opinions are in the minority.
I've done a little seismic work over the past 20 years, and you sound pretty much right on to me. I was brought up (professionally) with the notion that structural steel is inherently ductile, but it's only ductile to the extent that the designer can avoid a lot of behaviors that aren't ductile. every time I hear people talk about 'pre-qualified' joints, my palms sweat a little.

As I said, we don’t understand dynamic loading half as well as we pretend.
Too, too true, and I can say this because I know something about structural dynamics.

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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