Forums >> Revit Building >> Technical Support >> Import 3D .dwg model in Revit Architecture 2012

ossosso

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Joined: Fri, May 23, 2008
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Hi!I'm trying to import a 3d model of a chair inside Revit Architecture 2012. I've made a test with a simple sphere object, created it in 3dsmax and then exported in AutoCAD DWG 2010 format. Once in Revit all works correctly. Then I try with the chair using the same 3dsmax scene, deleted the sphere and merged the chair, the only difference is that the chair has more polygons. I receive this error message once imported:"The import geometry will not be visible in the view using the current settings.The Origin of the import will be centered on the origin of the model instead. You can view the import in any view where its geometry is within the extents."I've red other posts with the same error message but I haven't solved.. the model is about 30000 polygons.. does Revit has a limit? In this case how can I solve?Thanks a lot!

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bradley911

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Joined: Thu, Nov 12, 2009
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The object is larger then the current view window.  expand to fit and you'll see your file, or switch to an elevation, It may be to high from your work plane and need to be brought down to the zero elevation.  This happens some times depending on the settings you used in autocad.  If its a size issue you may have to scale the model to the size you want once you bring it into Revit unless it was build in autocad to the desired sizes.

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ossosso

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Joined: Fri, May 23, 2008
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Thank for answering, but it isn't a scale problem.

As I said, I've tested using a simple sphere geometry with the same height, lenght and width of the chair model, before I'veexported the sphere and then the chair, but dimension was the same; the sphere is over there correctly, the chair no.

Even if I do "Zoom Extend" it doesn't work: not visible yet the chair...

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ossosso

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I'm understanding a bit: the message appears and I can't see the geometry only when the geometry exported has faces which intersect each other... I can't correct that, 'cause the model must be done in that way.. how can I solve?

Thank you!

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bradley911

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Joined: Thu, Nov 12, 2009
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You likely need to explode the chair in AutoCAD just to the point it is in individual 3dfaces/regions this will allow you to place the individual peaces parts onto individual layers that you can control in Revit.  I have noticed that if all your surfaces aren't converted to regions or 3dfaces in AutoCAD you end up with rendering issues of the surface.  This may help, but not sure if it will correct the problem of the chair not appearing in Revit itself.  When you do your import try the "Preserve" colors settings, that may help.

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mbsteve

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Joined: Fri, Sep 22, 2006
759 Posts

when importing you must specify where you want the object to end up. Note positioning, make sure you are in plan view, at the correct level, and I almost always use Manual Origin. I placed this wine cabinet in plan and then switched to 3D view.

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