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AutoPIPE Wiki 02. Why does an AutoPIPE Line stop support ignore friction?
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                  • 02. Why does an AutoPIPE Line stop support ignore friction?
                  • 03. Why does line stop ignore friction?
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    02. Why does an AutoPIPE Line stop support ignore friction?

    Applies To
    Product(s): AutoPIPE,
    Version(s): 2004, XM, & V8i
    Environment: N/A
    Area: Modeling
    Subarea:
    Original Author: Bentley Technical Support Group

    Dec 2014, AutoPIPE V8i 09.06.01.10

    Problem:

    Would like to know the explanation about the line stop ignoring friction. In my opinion, this is not feasible especially when the line stops are placed nearby the nozzles. Moreover, high temperature  lines usually have high line stop loads to produce high frictional forces in the other 2 directions. These are being ignored by AutoPipe.

    Answer:

    Based on typical construction practice, a line stop is usually a lug or some sort of pipe attachment rigidly mounted that moves with the pipe in the axial direction. Most line stops have a predetermine gap for axial movement. When the pipe's axial movement is such that the gap closes, typically the Lug / attachment has come into contact with something (i..e concrete block, beam structure, etc..) that it prevents the pipeline from freely moving. This type of support is called a Line Stop

    A Line stop has no friction involved as the lug / attachment is rigidly mounted to the pipe where it freely moves with the pipe. Also a pipe is not supported by a line stop, so there is no bearing force on a line stop support. The only contact for a Line stop is when the gap closes and it is resting against the anchor object.

    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!

    • Line Stop
    • AutoPIPE
    • Modeling
    • support
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    • Mike Dattilio Created by Bentley Colleague Mike Dattilio
    • When: Fri, Dec 12 2014 4:58 PM
    • Revisions: 1
    • Comments: 0
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