On Sat, 18 Dec 2004 19:23:19 GMT "NSM" wrote:

For a given weight of material, maximum strength is obtained by distributing
it over the greatest cross sectional area possible, up to the point at which
it becomes too thin to resist buckling.

Interesting, I never thought of it that way. Of course it's only true
if you include the inner hollow as part of the cross section.

Your last clause is the gotcha. That point is the hard one to
determine. ;-)

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Jim Adney
Madison, WI 53711 USA
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