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 PVC pipe under external pressure Post Reply Forum
 Posted by: devitg ® 04/28/2005, 20:06:13 Author Profile Mail author Edit Hi all , I need to make a vessel to be under external pressure or with vacuum inside. The vacuum will be no more than -500 mBar relative, or about 15 inch HG. This vessel will be made from, a standard PVC pipe 508 mm 9.5 mm thick or [20" ] Schedule 20. Please I need to know if it will resiste such pressure.Or give me the formula that handle such topic. thanks in advancedevitg@gmail.com

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 Re: PVC pipe under external pressure Re: PVC pipe under external pressure -- devitg Post Reply Top of thread Forum
 Posted by: zekeman ® 04/29/2005, 10:32:48 Author Profile Mail author Edit For a long cylinder or sphere, the wall stress is p=PD/(2t) where p= compresive stress in wall P=diff between external and internal pressures t=wall thickness D=dia of vessel Make sure your dimensions are consistent and look out for the end cap stresses for cylinder.

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