Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Loads Subarea: Original Author: Bentley Technical Support Group The Load Hydrotest command enables the user to define the hydrotest conditions of a piping system. A hydrotest is a common method for testing the integrity of a piping system before it is put into service. In this test, the piping system is filled with pressurized water and checked for leakage, etc. The Hydrotest option permits a simulation of this scenario. Please note that the AutoPIPE Hydrotest option automatically converts all spring hangers into rigid supports to simulate the holding pin which is still in the spring hanger during the hydrotest. Comments, Questions, and Answers Item #1: Why are my V-stops not allowing lateral movement during a Hydrotest load case? Answer: From AutoPIPE online help: A non-linear static analysis cannot be performed on the hydrotest load case i.e. friction, support gaps and soil yielding are ignored. Item #2: Is there a method to perform a Hydrotest as a non-linear analysis? Answer: The following method overcomes the hydrotest load limitation in AutoPIPE (which cannot account for nonlinear gaps, friction and soil in the static analysis). Please see the following AutoPIPE help section: Help Contents Search Tab enter "Hydrotest Non-linear Method" (include the quotes), press List Topics button, double click on the selected topic from the list provided to see more information. Item #3: Why does the Hydrotest case show an Allowable K Factor of 0.9? Answer: Please see the following AutoPIPE help section: Help Contents Search Tab enter "Hydrotest Loads" (include the quotes), press List Topics button, double click on the selected topic from the list provided to see more information. 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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