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How to find out pipes or junctions which are not connected with the network in watergems?

Dear all,

I set up a big pipe model with modelbuilder but some of the pipes are not connected with the network. And I want to delete them before I set the demands with loadbuiler. Is there any way to select these pipes or junctions at one time?

  • Dear Pan,

    To select elements not connected to the network go to queries -> network review -> "Find initially isolated elements". This will select all elements not connected to a source (reservoir/tank) in your model. You can also use the "Find disconnected" query under network trace to select all elements not connected to a specific element. 

  • Hello Pan,

    As Joeri mentioned, queries can be very helpful. However I recommend using the Network Navigator tool, which uses queries and incorporates other useful features for reviewing and cleaning up models. For example, after running a query through Network Navigator, you can then select the highlight icon to display the returned elements in the model, without actually selecting them. That allows you to change the selected model elements without having to click select all again. If you review/edit part of the list, you can then click the Execute icon in Network Navigator again to update the results list and highlighted elements.

     

    To open this tool, go to the View tab on the ribbon menu and click "Navigator".

     

    The following article explains how to use this tool in detail, and includes a short video demonstration.

    Using Network Navigator

     

    I suggest starting by clicking the ">" button, selecting "Network Review", and then "Find Initially Isolated Elements". There are also other queries in the Network Review and Network Trace sections that are worth looking at, such as "Duplicate Pipes" and "Crossing Pipes".

     

    I wouldn’t recommend deleting all returned elements at once. You may want to look through the isolated/disconnected elements to make sure they should be deleted. For example, elements that are not within the tolerance used in ModelBuilder will not be connected in places that they should be.

     

    Also, validating and computing the model will return user notifications that will give clues for things you might have overlooked. Doing a quick search in our database of wiki articles will usually provide additional information on what the user notifications mean and how to address them.

     

    Here are some additional articles that might help.

    Node is not connected to, or is isolated from, a boundary (reservoir or tank) user notification

    After computing or validating a model, a user notification appears that some elements are not connected to an outfall

     

    Regards,

    Craig Calvin

    Bentley Technical Support

    Answer Verified By: Sushma Choure