AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

New Member
Posts: 1
Registered: ‎07-24-2012
Message 1 of 2 (345 Views)

Surface Contour Display - Weeding Contour Line?

345 Views, 1 Replies
07-24-2012 06:57 AM

Is it possible to weed contour lines displayed in a surface based on the slope?  I am having an issue plotting construction plans due to steep cut slopes and flat adjacent areas.  I have several cuts ranging from 33%-50% adjacent to flat areas around 1%.  Due to the drawing scale required by the client and the .2FT and 1FT contours required to detail the flat areas, my steep cuts appear as dark hatches due to the tight contour lines.  Any suggestions?

*Expert Elite*
Posts: 2,768
Registered: ‎12-18-2002
Message 2 of 2 (334 Views)

Re: Surface Contour Display - Weeding Contour Line?

07-24-2012 10:14 AM in reply to: ddachille

When I have had to tackle this issue what I did was:


1. Copy the surface. Now I have Surface 1 (the original) and Surface 2.

2. Create a polyline around the area of concern (where the contours are overly dense.)

3. Define that polyline as a hide boundary for Surface 1 and as the Outer boundary for Surface 2.

4. Apply a style that shows .2 and 1' contours for Surface 1 and a different style that shows 2' and 10' contours (or whatever fits your needs) for surface 2.


You end up with two surfaces, which sorta sucks, but it gets the job done.


Best regards,




Tim Corey, Owner
Delta Engineering Systems
Redding, CA
Autodesk Authorized Value-Added Reseller
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