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 Aug. 2015 09.06.02.06 Problem: What conversion factors are used when converting from the base English material / spec library files to Metric (especially interested in what is used for the linear expansion conversion) ? Answer: When creating a new material library, equipment library, or any type of library in AutoPIPE, know that all libraries file are created with English values. These English values are then converted to other units as defined in the respective units file specified on the General Model Options dialog screen. Example: Piping code = ASME B31.3 2006 Material file = B313-06 Pipe material = A53-A Pressure / Temp data for given material in ENGLISH units Given library SPEC data for Material = A53-A : in ENGLISH units Spec material = A53-A is linked to the library MATL table = CS Modify Units from English to SI Pressing OK button displays the following Note dialog: --------------------------- Note --------------------------- N13-61: Code material cold and hot properties are updated. --------------------------- OK --------------------------- Notifying the user that updates have been made to the indicated values, press OK and review the data. Given library SPEC data for Material = A53-A : in SI units Review the SI units file for thermal expansion conversion factor, see Line 24: Note the conversion factor = 0.8333333 0.230 x 0.83333333 = 0.192 0.990 x 0.83333333 = 0.825 1.820 x 0.83333333 = 1.517 2.700 x 0.83333333 = 2.250 The converted values match exactly with the library values: x 0.83333333 = Conclusion: All AutoPIPE Libraries values are entered in using specific ENGLISH units and are converted in AutoPIPE by a conversion factor found in the indicated UNITS file (i.e. SI, Metric, MMetric, etc..). 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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