Applies To Product(s): AutoPIPE Version(s): 2004, XM, V8i Environment: N/A Area: Subarea: Original Author: Bentley Technical Support Group Date Logged & Current Version Jan 2015 09.06.01.10 Problem: Regarding B318 code. The program is calculating the outside diameter hoop stress instead of the mid-plane hoop stress when the 2012 code is used. The help indicates that the mid-plane hoop stress should be calculated. This is what is done when the older versions of the same code are used. Answer: Per the equations in AutoPIPE's online help, ASME B31.8 2012, the hoop stress is based on the Pipe's Outside Diameter and nominal wall thickness. This matches the actual code equation, ASME B31.8 - 2012, section 841.1.1(a): See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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