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Forums >> General Discussion >> Revit Project Management >> Modelling terrain Revit imported from AutoCad
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Joined: Thu, Oct 20, 2011
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I'm building a terrain imported from AutoCAD and Revit. I followed all the right steps with regard to the import dwg file to rvt file and pursue the auto play, adding then the extra points to level curves.
When i finish editing and still in the sketch, the land in Revit is, surely, designed with accuracy in relation to AutoCad: all points associated with the contour and outside the contour, with its altimeter according to source file.
However, as the final result was also denote differences in AutoCad for the following:
1) - Although the points are designing the exact contours of the final reproduction of the land does not match the AutoCad because Revit is not doing the proper contour of the curve;
2) - Although there are extra points marking the contours, Revit does not seem to play well coincident with AutoCad, so occasionally it involves / associate the point on the contour nearest;
3) - Revit appears to still make a strange marriage between points of equal altimeter but located in different contours or not - this creates a strange representation of the topography.
Can anyone find solutions to resolve the topography more accurately compared to AutoCad, what i mean is, in relation to the original survey?
I appreciate the comments. Thank you.
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Joined: Tue, May 16, 2006
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If you ever hand drafted contour lines from a survey, you would know that contour lines are arbitrary. Given the same information, two drafters might draw them differently. It is unimportant that the CAD lines and yours don't match. What is important is that your spot elevations are correct.
You need to decide if you will print with Revit contours or CAD. Just do one or the other.
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![mbsteve Avatar](user_avatar/23553.jpg)
Joined: Fri, Sep 22, 2006
759 Posts
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I have hand drafted numerous contour maps, and there is sort of an art to it, that is to catch grade breaks correctly, and minutia. You can do a contour map in Revit with far less point than you imagine, and you can adjust the contours around to look more correct, if you don't like the result of the Revit conversion, by just adding a point here or there you can make the contours shift, don't try to set points on the contour line rather, set elevation points just above and or below the contour line this way you can influence the appearance of the contour line on your map. Generally, I don't mess around with this much accept on roadway areas which seem to be a little trickier.
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