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Thread: Linking 3D CAD models into Revit

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    Linking 3D CAD models into Revit

    We often get 3D CAD models from consultants who model in something other than Revit. When we link the model into our Revit file, it does not "cut" when you do a section view. Instead the section view shows the Revit content as expected and ALL of the CAD file.

    I have seen and tried other methods, and have settled on creating a generic model family and inserting the 3D model into it and then load into Revit. It works a little bit better, but not great.

    Has anyone come up with a good way to get a linked 3D CAD model to "cut" properly in a section view?

    Thanks,
    John

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    Member Darryl_S's Avatar
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    I've had the occasion to link in some sketchup geometry(horror!) and encountered the same issue. The way to get it to cut was to bring it into a mass family first and then insert that mass into the project. Only then did it cut as expected.

    Hope that helps!

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    French Moderator jbenoit44's Avatar
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    Hi
    I've experimented this a few times, with various results.
    True Autocad dwg files have nice sections views, but exported dwg from "exotic" soft doesn't work well.
    Also, it depends on how the export was made, meaning options and export properties.(just as in Revit..)
    *.sat files, coming from Inventor, works fine with sections views, but not at 100%.

    Sketchup files must always be imported in families - mass family for buildings, after that you'll be able to use "by face" tools on it. Usefull sometimes...

    Post your file, we may try it if needed.

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    Quote Originally Posted by Darryl PRP View Post
    I've had the occasion to link in some sketchup geometry(horror!) and encountered the same issue. The way to get it to cut was to bring it into a mass family first and then insert that mass into the project. Only then did it cut as expected.

    Hope that helps!
    Thanks for the tip. I tried the mass family and when i tried to load it, it gave me an error message that the mass had to many edges. It is a fire sprinkler lay-out for one level of a building. I can try splitting it up by trial and error, but does anyone know what the limit of edges is?

    Quote Originally Posted by jbenoit44 View Post
    Hi
    I've experimented this a few times, with various results.
    True Autocad dwg files have nice sections views, but exported dwg from "exotic" soft doesn't work well.
    Also, it depends on how the export was made, meaning options and export properties.(just as in Revit..)
    *.sat files, coming from Inventor, works fine with sections views, but not at 100%.

    Sketchup files must always be imported in families - mass family for buildings, after that you'll be able to use "by face" tools on it. Usefull sometimes...

    Post your file, we may try it if needed.
    Thanks for the help. I mentioned the error message I was getting above. I have attempted to post the file (1.8 MB) but it tells me the file is invalid.

    Thanks,
    John
    Last edited by jhenry58; January 6th, 2011 at 06:15 PM.

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    Administrator Munkholm's Avatar
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    Quote Originally Posted by jhenry58 View Post
    Thanks for the help. I mentioned the error message I was getting above. I have attempted to post the file (1.8 MB) but it tells me the file is invalid.

    Thanks,
    John
    Uhhm.. .dwg and .sat files where not on the "to do" list when setting up the allowed file extensions

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    where was this solution 3 weeks ago ! ha

    Now I know how to approach it next round. Neat trick.

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    Quote Originally Posted by Munkholm View Post
    Uhhm.. .dwg and .sat files where not on the "to do" list when setting up the allowed file extensions
    Now it all makes sense, I didn't think it was the file size.

    Thanks

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    Quote Originally Posted by Munkholm View Post
    Uhhm.. .dwg and .sat files where not on the "to do" list when setting up the allowed file extensions
    I'm sorry, can you explain this further? I'm also getting the "too many edges" error (also on a fire sprinkler CAD file I'm trying to insert as a link).

    Thank you!

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    Administrator Munkholm's Avatar
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    Sorry, that reply was related to the forum functionality only... Have nothing to do with Revit.

    Would suggest that you remodel the sprinkler in Revit, and maybe simplify the geometry if you donīt need to show it 100% accurate in 3D views etc.

    And welcome to the Forum BTW

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    Quote Originally Posted by Munkholm View Post
    Sorry, that reply was related to the forum functionality only... Have nothing to do with Revit.
    Sorry... newbie.

    Would suggest that you remodel the sprinkler in Revit, and maybe simplify the geometry if you donīt need to show it 100% accurate in 3D views etc.
    Thanks. This is actually a consultant file that is sent over to me, and is going to be updated fairly frequently, so that's probably going to be a bit too much for me to keep up with. I might just go into CAD and delete the stuff I don't need in my Revit views instead.

    And welcome to the Forum BTW
    Thanks again!

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