RE: [PSUBS-MAILIST] Steel Pipe Hull

["Jon Wallace" <jon@psubs.org>]

Doug,

 

I'm not sure if this is what you are looking for, but check out the PSUBS web forum.  Go to www.psubs.org/webforum, then choose the Design/Engineering category, then click on "Pressure Vessel Design Charts".

 

Jon

 

 

-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of djackson99@aol.com
Sent: Sunday, January 28, 2007 4:32 PM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Steel Pipe Hull

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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