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Pipe merging

How do you merge 2 pipes into one. Without the use of skelebrator?

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  • Hello Christen,

    You can reconnect the pipe to a new node and delete the extra pipe and node. This link has information on this: Is there a way to reconnect a pipe to another element without deleting it? You may need to double-check the pipe length.

    If the nodes in the model are close to each other, the option to merge nodes in close proximity is another option.

    Regards,

    Scott

  • I reviewed Keeping a Hydraulic Model in Sync with a GIS and read the following (between quotation marks " "):

    " What if I replace valve nodes with Isolation valves?

    If you had originally imported valves as nodal valve elements (such as a GPV or TCV) connected to pipes, you can use the Inline Isolation Valve Replacement feature in Skelebrator to convert the valves to isolation valves. One of the benefits of this is that you can reduce model complexity and the number of pipes - instead of two pipes connected to a valve node, you would have an isolation valve associated with (attached to) a single pipe. 

    If you take advantage of the GIS-ID feature to keep your model in sync with your GIS, using the inline isolation valve replacement tool will result in a single pipe with both GIS-IDs from the two former pipes. So, if a change happens to these pipes in the GIS and you perform a sync-in (from the GIS to the model) in ModelBuilder, the single pipe in the model will receive the update for the two pipes from the GIS. If both of the pipes were changed in the GIS, a ModelBuilder sync-in will adopt the "last one wins" principle to determine which of the two changed pipes in the GIS are synchronized to the one pipe in the model. For this type of workflow, it is recommended that you use the Snapshots feature in ModelBuilder. "

    But  my question then is the following:

    If I do not have skelebrator can I still merge pipes where there are isolation valves and retain the GIS-ID's of both pipes?

  • If I do not have skelebrator can I still merge pipes where there are isolation valves and retain the GIS-ID's of both pipes?

    If you do not have Skelebrator, then you will not be able to use the "Inline Isolation Valve Replacement" function described by the article. You would need to manually replace node valves with isolation valve and modify the GIS-IDs to maintain the relationship with the GIS. Meaning, you would follow a process like this:

    1. Note the GIS-IDs for the node valve and two adjacent pipes
    2. Right click on the end of one of the pipes closest to the node valve, choose Reconnect and click on the junction on the opposite side of the node valve, creating one single pipe spanning across the node valve.
    3. Delete the node valve (which will delete the other pipe
    4. Modify the length, roughness and minor losses of the single pipe (that now replaces the two pipes) if needed, to end up with one equivalent pipe. In the GIS-ID collection, add the GIS-ID of the pipe that is no longer in the model. The single pipe should now have both GIS-IDs of the two pipes that is represents.
    5. Lay out an isolation valve on top of the middle of the single pipe, choose Yes when prompted to attach it to the pipe, then enter the GIS-ID of the previous valve node.

    I added a note about this to the article you referenced.


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.

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  • If I do not have skelebrator can I still merge pipes where there are isolation valves and retain the GIS-ID's of both pipes?

    If you do not have Skelebrator, then you will not be able to use the "Inline Isolation Valve Replacement" function described by the article. You would need to manually replace node valves with isolation valve and modify the GIS-IDs to maintain the relationship with the GIS. Meaning, you would follow a process like this:

    1. Note the GIS-IDs for the node valve and two adjacent pipes
    2. Right click on the end of one of the pipes closest to the node valve, choose Reconnect and click on the junction on the opposite side of the node valve, creating one single pipe spanning across the node valve.
    3. Delete the node valve (which will delete the other pipe
    4. Modify the length, roughness and minor losses of the single pipe (that now replaces the two pipes) if needed, to end up with one equivalent pipe. In the GIS-ID collection, add the GIS-ID of the pipe that is no longer in the model. The single pipe should now have both GIS-IDs of the two pipes that is represents.
    5. Lay out an isolation valve on top of the middle of the single pipe, choose Yes when prompted to attach it to the pipe, then enter the GIS-ID of the previous valve node.

    I added a note about this to the article you referenced.


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.

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