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USER NOTIFICATION:"There is a gutter leaving this 'In Sag' catch basin inlet. By definition, gutters should flow towards 'In Sag' inlets - consider reversing the gutter start and stop nodes"

Hi

for the modelling of a gutter I am getting the following warning message:

"There is a gutter leaving this 'In Sag' catch basin inlet. By definition, gutters should flow towards 'In Sag' inlets - consider reversing the gutter start and stop nodes"

  • Hamid,

    I'd like to see your model files because the notifications that you're getting don't make much sense to me based on the screen shot you've included. There are two options for sharing your model files on BE Communities. If you would like the files to be visible to other members, compress the files into a zip file and upload them as an attachment using the ‘Advanced Reply editor’ before posting. If your data is confidential, you can follow the instructions in the link below to send it to us via Bentley Sharefile. Files uploaded to Sharefile can only be viewed by Bentley.

    http://communities.bentley.com/help/w/be_communities_help/7079.be-communities-secure-file-upload

    Regards,
    Mark

    Mark

  • Hamid,

    I was able to locate the problem by setting up a model similar to what you have in your screen shot above. The reason that you're getting those user notifications is because you have a gutter defined as the link element between CB-1 and CB-2 and gutters are designed to convey overflow that is not captured by catch basins. You can have a gutter there, but you also need to make sure that you have conduit connecting these two elements in order to convey the subsurface flow.

    Regards,
    Mark

    Mark

  • Hi Mark
    Could you please send me your model?
    Thanks
    Hamid

    Hamid.Akbari@AECOM.COM
  • Hamid,

    After some further analysis of your problem I don't think I was 100% correct in what I previously stated. It's possible that your problem is two fold with the first issue being that GU-1 probably has the start and stop node reversed. You can do this by following the directions located in this wiki:

    https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/19044.how-do-i-reverse-that-start-and-stop-node-for-a-pipe-conduit-gutter-etc

    You need to make sure that the start node is CB-1 and the stop node is CB-2. If the model is already set up that way and you still get a user notification the problem is that you likely have CB-1 set to an inlet in sag and inlets in sag capture all the flow, so none can travel down the gutter. If you change that inlet to a catalog inlet and make it on-grade or sets it as percent capture with anything other than 100% capture that will work. In fact, any combination of an on-grade inlet with inlet type set to not capture 100% of the flow going to the inlet will work for this setup.

    Regards,
    Mark

    Mark

  • Actually I am going to just model a flow entering to a gutter and then convey to a ditch inlet and then to pipes.
    How can I model this?
    Regards

    Hamid