Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: settings Subarea: Original Author: Bentley Technical Support Group Problem: AutoPIPE shows a code combination labeled ‘Max Range’ as an expansion case…what is this? Answer: Answer: From the online help: The program will automatically create a special code combination called "Max Range" that stores the results of the maximum thermal range stress case, e.g. T1 to T3, including thermal ranges from ambient temperature, e.g. Amb to T1. This option is useful when the maximum expansion stress due to thermal range loadings only is required rather than generating every thermal range code combinations explicitly. In order to see all the thermal ranges, select "Tools Model Options Results "No. of thermal ranges" option (see image below). In addition see online help for details on these options. After the settings are enabled with the correct number of thermal cases, these load combinations will be available for inclusion into other combinations as required. Item #1: Why the max range is shown as TR: T1 to T7, but the code stress for T2 to T7 is larger? Why is this? Answer: Current implementation of the program (AutoPIPE V8i 09.06.01.xx and lower) is to only check for a range which results in maximum resultant moment. This is done before the program goes in to detailed calculations (cross sectional area, section modulus are not know at this point). Different codes may have different requirements like B31.1 does not consider axial stress, whereas B31.3 considers it differently incorporating bending, torsional and axial stresses. As such, the following enhancements have been logged: TFS-E126888: Add details to online help regarding selection of Max Range load cases TFS-E126889: Consider axial force in selection of load pair for Max Range combination 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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