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I have an Existing Surface i created from survey data. I have a Proposed Surface i created with feature lines. Now i want to create grading around the outside portions of my Proposed Surface. I create the Grading Group and specified a projection surface and selected a Criteria Set for a 3:1 slope to match back to Existing Surface. I select the Feature Line i wish to create the grading from and progress through the cut and fill prompts and nothing happens. Nothing gets created. I have tried an audit on the drawing to see if errors are causing the problem and there are no errors.
What am I doing wrong here. I use this tool all the time and this problem comes up frequently. Especially if i have made any surface adjustments. Please help.
Joe Bouza Did you find this post helpful? Feel free to Like this post. Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.
@Anonymous wrote: Nope. The feature line is part of the proposed site.
But does it have the elevations of the poposed site?
Joe Bouza Did you find this post helpful? Feel free to Like this post. Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.
Doesit only hapen to this feature line? recreate the FL
Joe Bouza Did you find this post helpful? Feel free to Like this post. Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.
Without the drawings we'll have to speculate. One other factor that can cause a grading to fail is if it cannot find a solution (unable to hit the target). Check that the grading is at a location, elevation and has a slope parameter that will cause the resulting daylight line to land entirely on the target surface.
Neil Wilson (a.k.a. neilw) AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1 WIN 10 64 PRO
I know this post is old but I have also experienced the same problem, notably just a few minutes ago. The grading was working fine until some sort of error occurred. Then it wouldn't work anymore. After a few unsuccessful tries I noticed that my existing surface was not displaying the contours anymore and when I hovered the crosshairs of my mouse would not display the elevation of the existing surface. So then I synchronized the existing surface (the surface is a data shortcut from a different CAD file). After that the surface contours popped back up and I was able to perform grading again.
Yet another thing to love about Civil 3D. Feature lines randomly breaking it and having to re-create the same feature lines in order to create a grading and edit the original grading as I was trying to do in the first place (what should have been a quick edit, just editing the slope of a grading, turned into longer task). BEWARE, DO NOT ALLOW YOUR FEATURE LINES TO LIVE IN A DRAWING FOR TOO LONG AS IT IS NOT A MATTER OF IF, BUT WHEN THEY WILL BREAK. DUMB IT ALL DOWN TO 3D POLYLINES SO THAT CIVIL 3D CAN HANDLE IT (BECAUSE CIVIL 3D IS TO DUMB TO HANDLE ITS OWN FEATURE LINES). Half the time spent in Civil 3D is just doing re-work on work you've already done because the program has so many bugs and breaks all the time. Gotta love it.
Happened to me on 2024 version. New grading group didn't work for me so exploded the feature line and created it again from the 3d polyline. Seemed to do the trick. Hope this helps someone.
I ran into the same problem. I have used the Insert PI command and it corrupted my feature lines. Once I deleted the effected feature lines and replaced them, the grading tools started working again.
