Showing posts with label exchanging surface between civil 3D and Revit. Show all posts
Showing posts with label exchanging surface between civil 3D and Revit. Show all posts

Thursday, December 8, 2011

exchanging surface between civil 3D and Revit

Today we ran into another oddity in the whole coordinates story...


I like to set the project base point manually. I do this in civil. I choose a point with nice numbers and put a little x there. To get surfaces from civil 3D into Revit I like to use the Integration with Civil 3D extension. In order to exchange surfaces between Civil 3D and Revit I create an extra surface that has it's center spot exactly upon the project base point. This is a dummy surface for which I am sure that it will not move or change shape! (see previous post why I do that)


Today I had to check something and I didn't bother to setup my project basepoint on a nice round number. And guess what, it turns out that Revit didn't put the project base point where it is in Civil 3D but it moved it to a nice round number...


In civil 3D the ID of center of the surface is: (meters)
X = 235013.1029     Y = 580515.5750     Z = 0.0000


Revit creates a project base point at n/s 580515500.0  and e/w 235013500.0 (Millimeters)
You can also see that the project base point is off center. 


I redid the whole thing but then I used nice numbers in civil and then Revit did use the same coordinates....
So instead of these  X = 235013.1029     Y = 580515.5750     Z = 0.0000
I create the point at X = 235000.0000     Y = 580500.0000     Z = 0.0000


Recommendation: Create your own project base point in Civil 3D and put it on a round nice number! Create a dummy surface that has it center on your created project base point. Get only that surface into revit first and CHECK the project basepoint numbers!



Disclaimer information
http://danielgijsbers.blogspot.com/2012/08/disclaimer.html