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    #1

    Duct connectors adjusting in project?

    Is it possible for the duct connector on an air terminal to adjust to the size of the duct that is connecting to it in the project.

    At the moment my duct reduces or increases in size at the terminal to fit the connector I have in the family.

    I'd prefer the connector to adjust the duct rather than the duct adjust to the connector.
    Domsib

    Revit MEP - 1 Day at a time...
    Tags: None
    #2
    Yes, just set the diameter/radius parameters to instance.
    I usually make them like that too, unless we are specifying a specific model (usually we do design up to specification so a flexible 'design' air terminal that works nicely in all situations is more important).
    "One must imagine Sisyphus happy." Albert Camus - "The innovator has for enemies all those who have done well under the old conditions, and lukewarm defenders in those who may ​do well under the new." Nicolo Machiavelli -"Things that are too complex are not useful, Things that are useful are simple." Mikhail Kalashnikov

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      #3
      Click image for larger version Name: Example.png Views: 1 Size: 111.5 KB ID: 384108
      Joseph. This is what I have at the moment.

      We have different types (sizes) within the family.

      Therefore my diameter connector is associated to a parameter called duct width so that when my terminal changes size the connector increases too.

      If I was to set the diameter parameter to 'none' and create a new instance parameter for it called diameter would this be what you mean?
      Domsib

      Revit MEP - 1 Day at a time...

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        #4
        You can just select the Duct Width/Height parameter -> Modify -> Change Type to Instance

        Like all fittings and duct accessories, it wont always change immediately when you change duct size (Its a shame autodesk havent made it that way, I think duct size should drive the size of everything that is not type specific). But the first time you connect, or if you use Duct Pipe Sizing the connector will chnage to the same size as the duct.
        "One must imagine Sisyphus happy." Albert Camus - "The innovator has for enemies all those who have done well under the old conditions, and lukewarm defenders in those who may ​do well under the new." Nicolo Machiavelli -"Things that are too complex are not useful, Things that are useful are simple." Mikhail Kalashnikov

        Comment

          #5
          Originally posted by josephpeel View Post
          You can just select the Duct Width/Height parameter -> Modify -> Change Type to Instance

          Like all fittings and duct accessories, it wont always change immediately when you change duct size (Its a shame autodesk havent made it that way, I think duct size should drive the size of everything that is not type specific). But the first time you connect, or if you use Duct Pipe Sizing the connector will chnage to the same size as the duct.
          I've noticed that with "auto-sizing" connections, if you change the duct/pipe size after, the connecting element doesn't always change size. Just something to keep in mind.

          Take this same concept into your pipe accessories as well. Saves from having a lot of types for the different sizes.
          Jason Peckovitch
          Father | Photographer | Car/Tech Guy
          Revit MEP 2015 Certified Professional
          That BIM Guy Blog | Google+

          Comment

            #6
            Right now I have 2 instances of the same air terminal. With one the connector changes with the duct but with the other it doesnt.... something with direction the duct is drawn in perhaps.

            But, yes duct accessories that size themselves to the duct you put them in are very useful.

            Or they can even be sized by the airflow through them if you like (I made a duct heater that does this based on manufacturer details, you just place it on a duct and it tells you which model it is and what the heating power needs to be. changes automatically when you adjust the airflow). Make one connector Fitting, to pick up the attached duct size, and make the other Global and attach parameters for flow, pressure drop etc.
            "One must imagine Sisyphus happy." Albert Camus - "The innovator has for enemies all those who have done well under the old conditions, and lukewarm defenders in those who may ​do well under the new." Nicolo Machiavelli -"Things that are too complex are not useful, Things that are useful are simple." Mikhail Kalashnikov

            Comment

              #7
              If your design specifies terminal types, you might want to be careful with this. From my experience, there are usually specific sizes available from the manufacturer. So, a transition is needed between the duct and the air terminal.
              Last edited by RobDraw; September 11, 2014, 12:40 PM.

              Comment

                #8
                Guys,

                I've attached my Air terminal. It still seems to transition to the ductwork rather than alter to fit the ductwork.

                The attached family doesn't have the duct width/height parameter changed to instance but I did do this and I couldn't get it to work.

                Can one of you guys have a check and see what it needs?

                Thanks
                Attached Files
                Domsib

                Revit MEP - 1 Day at a time...

                Comment

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