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Re: Foundations for a 3-pinned arch stadium

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Ooops.
I dropped a decimal in my calcs. That should be:
33 in^2, 113 plf, 7 in dia solid rod, increase for load factors.

Paul

> Kevin,

> In your case, the lateral foundation stiffness at each support must be
> 800 k/in +/- to hold a 1" foundation separation. That's 1/2" displacements at
> each support. Load factoring not considered.
> (quick calc tie rod: 330 in^2, 1131 plf, 20" dia solid round, 200 ft long at
> each arch - increase for load factors - how much does the arch weigh after the
> first design pass?)

> Regards
> Paul

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