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Re: Steel Dome Deisgn

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>For a dome such as this, with discrete elements such as wide flange
>ribs, instead of true shell elements, do you think shell theory is the
>way to go?
My mistake. When I think of a dome I think of a shell structure like the 
Pantheon. The gridded structures are actually space frames. Shell theory 
wouldn't apply unless you closed off the surface and expected the shelI 
portion to carry load.

I suspect that shell theory was the starting point when Buckminster 
Fuller designed the first geodesic dome because these framed structures 
actually mimic the behavior of shell structures in that each element is 
subject to biaxial loading. This diagrams on the web page look way slick, 
and I bet you could get a handle on loading requirements for individual 
elements by calculating membrane loadings as if they were shells and then 
applying the loading thus calculated to individual members and cells.

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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