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Forums >> Revit Building >> Technical Support >> Imported dwg files

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Wed, May 10, 2006 at 7:11:57 PM | Imported dwg files

#1

Jefesquire


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Joined: Tue, Mar 14, 2006
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Have a model that has several imported dwg files in it, but I cannot find them anywhere. I have made sure that visibility settings are on, and have turned the crop limits off in all views, and extended the section box in 3d. Any ideas on how to find these missing files?

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Wed, May 10, 2006 at 8:46:08 PM | RE: Imported dwg files

#2

bolandereric


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Joined: Mon, Dec 13, 2004
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When you put them in did where they set at a level that the drawing is not cutting thru. Sometimes when I cant see them i play with the veiw range and usually find them.

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Tue, Jan 13, 2009 at 12:30:01 AM | Imported dwg files

#3

naterfisher


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Joined: Tue, Oct 28, 2008
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For the sake of people searching these forums like I was.  I had the same issue with not seeing my imported CAD files.  The problem was that in the .dwg there were some blocks that had some line work drawn way off in space, which then made my bounding box around all the CAD lines huge.  So when it was imported into REVIT the bounding was so huge in REVIT I could not see the CAD file.  To solve this I exploded all my blocks in CAD then 'w' blocked the file with only the highledted CAD lines in view, then i was able to import into REVIT without any problems.


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Tue, Jan 13, 2009 at 4:59:34 AM | Imported dwg files

#4

erland73


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Yes, if you make a zoom extend to your drawing in your Autocad session maybe you will find some "objects" out of your drawing space,so check it. But in your Revit session check your project units too.

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Tue, Jan 13, 2009 at 4:52:09 PM | Imported dwg files

#5

WWHub


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Joined: Tue, May 16, 2006
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naterfisher,

As you use Revit more, you will discover several problems using cad imports.  

  1. Lines slightly off.  Revit likes lines H & V or if at an angle, the angle has to be in Revit's tolerances.  If not, Revit will issue a warning.  In some instances, it will actually modify the angle to Revit's limits but I do not know what rules it uses.
  2. ACAD drawings tend to be inacurate by REVIT's standards.  That is again because REVIT does not use the very small units that autocad uses.
  3. NEVER NEVER NEVER explode autocad hatches and as a rul, we never import an autocad hatch.  If you import a hatch, it becomes a new hatch style named by view.  You can have two hatches in cad that are the same type but they will become two different patterns in your REVIT.  After just a few imports, you will find your pattern file too large to manage.
  4. Every line in AutoCAD becomes a new linetype in REVIT named by layer.
These are only some of the reasons to restrict your imports and when you do import, use wblock in CAD to limit what you import, and clean up the file before you import.

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Mon, Jul 20, 2009 at 5:02:35 PM | Imported dwg files

#6

jamiew


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Is there a simpler way to hunt down, and isolate all this .dwg stuff in my project?  It's really hard to weed out.  I have a list of Imported Objects under Object Styles, but I cant see where they are in the revit model or on sheets, and I'm afraid to delete things that are important.

thanks!


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Mon, Jul 20, 2009 at 5:17:29 PM | Imported dwg files

#7

WWHub


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There is no simple way except to control the process initially.  This will help you in the future:

I think one of the Autodesk University on-line handouts will help you with this.  Look at Managing Large Projects in Revit® Architecture.

 

http://au.autodesk.com/?nd=class&session_id=2688

Lonnie Compton addresses the import issues.


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Wed, May 10, 2017 at 7:24:36 AM | Imported dwg files

#8

k065167


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It's now 2017 and I still had this same problem Sad

I tried all your suggestions but none helped find and isolate individual DWGs to fix or delete them. Had to use a plugin called Dwg Explorer for that.

This simple feature should have been part of Revit already!

 


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Wed, May 10, 2017 at 12:14:39 PM | Imported dwg files

#9

archigrafix


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Joined: Fri, Jul 5, 2013
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Thank you for the link to DWG Explorer. I will try it.


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archigrafix.com | Oslo, Norway

trees | cars | people | graphics | revit plugins

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Thu, May 11, 2017 at 3:25:29 AM | Imported dwg files

#10

k065167


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Joined: Sat, Oct 4, 2008
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No problem, archigrafix!

It took me a while to find DWG Explorer among all these plugins which don't let us see each cad file before deleting and also include a whole bunch of other features I didn't ask for!

I always tell people to LINK & not IMPORT dwgs, but this is difficult in a studio of 200+ architects as you can image Smile


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