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Re: Conc. Tilt-up w/ crane loads

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On Nov 30, 2005, at 10:29 AM, Jason Christensen wrote:

The owner and the crane manufacturer want the crane gravity columns to be
braced by the tilt-up panels.
Maybe it's time the owner and the crane manufacturer got a brief lecture on fatigue. I don't think you want soft lateral supports either for resisting service loads or seismic loading. If end up with large (relatively) swaying displacements because your lateral support is soft, unpleasant things happen with connections and bolts in particular. Static analysis won't tell you about this.
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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