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Wed, Oct 16, 2013 at 8:07:01 AM | Revit & DWG

#1

dande


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Joined: Thu, Jul 23, 2009
14 Posts
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I have a revit building and 3 dwg files. In dwg, I have a site, drainage and roads. They all work fine and fit together nicely in Autocad.

 

When I set up the Revit file I aquired the coordinates from the ste file. Set up my project base point and everything is fine. I can link in the site file into revit as shared coordinates and it comes in the correct position.

 

When I try to link in the Drainage or roads dwg I get Coordinates not shred and it palces it centre to centre and in the wrong position.

 

I have tried creating adtional coordinate systems 1 for the drainage and 1 for the roads. No luck. It still comes in in the wrong position.

 

How do other people handle multiple CAD files with revit.

 

thanks


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Thu, Oct 17, 2013 at 10:44:55 PM | Revit & DWG

#2

slyck


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Joined: Sat, Mar 24, 2012
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Are the site, drainage and roads sharing the same coordinate system? I would also check the positioning option 

in the Link Cad dialog. Make sure it's set to origin to origin and not center to center.

 

Let me know if this helps


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Fri, Oct 18, 2013 at 2:11:11 AM | Revit & DWG

#3

tanrevit


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Joined: Mon, Aug 30, 2010
27 Posts
5 Stars: 2 Votes


Hi, I am not spent on yours situation. I can divined that your CAD file ( drainage) wrong on block( scale ). You must check and make sure it's not be scale ( change to 1:1) _ That is result when link to Revit file.

attached figue is wrong block scale and must be changed to 1:1



Attached Images

125117_v2.jpg

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Fri, Oct 18, 2013 at 4:38:02 AM | Revit & DWG

#4

dande


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Joined: Thu, Jul 23, 2009
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Thanks for your replies. In CAD everything is on the same coordinate system and the same scale. Origin to Origin won't work because AutoCAD and Revit have different origins so shared coordinates have to be used.

If I export my building from Revit to autoCAD  using shared coordinates the building exports to the correct position so  I know the shared coordinate system is correct.

To be honest Revit does not handle AutoCAD 3D stuff very well. Even trying to link in the 3D drainage model is says it can't ilink the ACIS solid convert everything to a polyface mesh. Which is not practical in a real world where things are changing regularly

When you have Civil people working in Civil 3D its a major problem.

I'm surprised other people haven't encountered this problem

 

 

 

 


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Fri, Oct 18, 2013 at 4:45:36 AM | Revit & DWG

#5

dande


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Joined: Thu, Jul 23, 2009
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The way I see it is when you have a project involving Revit and Civil 3D you have to coordinate the project in DWG which means you lose your BIM data and then Revit becomes only a modeling tool


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