Hot sustained stress/ Support loads

I've ran the onshore pipeline according to the ASME B31.8.

I found that there are some lift off supports from the vertical expansion loop/ bridges.

I have some questions as follows.

1. I understood the when the pipe lift off from the structure the weight of that section is distributed to the closest support at the pipe legs. Does AutoPIPE consider redistributed load to the other support?  The support load needs to be provided to support design.

2. Do I need to run the analysis by deleting all lift off supports to provide the effect of distributed load from lifted off section and stress check?

3. Do you have any approach to get the exact support loads in this situation?

Parents
  • Greetings, 

    You should have seen a Warning message about lift off -  W801-121: V-stop liftoff(s) have occurred under operating load.  See support output for details

    Note, most of these messages have been added to the this WIKI page here. select the hyperlink for Warning, and then for W801-121, to see answers to typical questions about lift off and how to handle them.

    Regards,
    Mike Dattilio
    Design Analysis Engineering Group
    Senior Analyst Bentley Systems Inc
    =============================================================================
     

Reply
  • Greetings, 

    You should have seen a Warning message about lift off -  W801-121: V-stop liftoff(s) have occurred under operating load.  See support output for details

    Note, most of these messages have been added to the this WIKI page here. select the hyperlink for Warning, and then for W801-121, to see answers to typical questions about lift off and how to handle them.

    Regards,
    Mike Dattilio
    Design Analysis Engineering Group
    Senior Analyst Bentley Systems Inc
    =============================================================================
     

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