[PSUBS-MAILIST] Steel Pipe Hull

[djackson99@aol.com]

Ok, it's the same question as before but without the "F-glass" word that killed the vis last time around.

Lets say we are building a 1ATM battery box. If a steel pipe is rated at 1000 psi.  The same pipe without frames, will not be able to withstand 1000 psi of external force due to problems with roundness.  But there must be some ratio or formula that can define this loss of performance for any given diameter, plate thickness and roundness.

Does that make sense, and isn't there some chart that mechanical engineers use for this when building all the piping that passes through pressure vessels?  Where is that chart?

Thanks
--Doug J
www.submarineboat.com

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