Grading AutoCAD Civil 3D

[Anonymous]

Hi everybody, 

I have a Project with at road and a Cul-de-sac. 

I created a Alignment/ Corridor/ Surface for the road Portion. 
And a Separate Alignment/ Corridor/ Surface for the Cul-de-sac Portion

During Training the instructor Briefly touched on using these surfaces to get Feature Lines to Create a new Surface to be used for the whole site. This new surface and feature lines will be much easier to edit and change than the two corridors. (Because they don't line up well) 

I'm having trouble with this. How do I create this feature lines and set all there elevations? 
I go to Grading Create Feature Lines and select things like edge of paving and driveways, but they all come in at zero elevation. 

Isn't there a tool to take a feature line and drape it over a surface so that it is set to that surface elevation?? 

If anyone is working on Civil3D even if you can't help me, give a shout, it would be great to hear from other people upgrading to Civil 3D .. 

Thanks,

Susan.

[sboon]

If you have a corridor then it will have feature lines within it that it uses to display the lines, like Edge of Pavement, Crown, Ditch, etc.  You can Extract these featurelines from the corridor which gives you a copy of whatever was in the corridor.

If you have a corridor surface then you can also drape a feature line onto it as you described.  Check out the Modify tab on the Ribbon - you might have to expand some of the panels to find the right button.

[Jeff_M]

---

@Anonymous wrote:

I have a Project with at road and a Cul-de-sac. 

I created a Alignment/ Corridor/ Surface for the road Portion. 
And a Separate Alignment/ Corridor/ Surface for the Cul-de-sac Portion

---

I would've kept these as one corridor, so when you extract the featurlines they will (should) be contiguous.

---

During Training the instructor Briefly touched on using these surfaces to get Feature Lines to Create a new Surface to be used for the whole site. This new surface and feature lines will be much easier to edit and change than the two corridors. (Because they don't line up well) 

---

Not sure what they were trying to teach with this. I would just create a surface from the corridor(s) (just one for me, see above) and paste them into a new FG surface (pasting is done under the Surface Defintion, Edits). You can Extract Featurelines from the corridor which remain dynamic to the corridor, These will have the correct elevations and may be added to a surface, but these extra steps are not needed for basic corridor grading.

There are alot of people here who were 'new' at this at some point (ok, we ALL were new at some point 🙂 ). Just ask a well formulated question, with your version mentioned somewhere in there, and we will do our best to help you along. 

BTW, Steve is one of the most knowledgable corridor/grading users posting on here. You've done well to get his attention first! 

[sboon · Accepted solution]

Thanks Jeff - you're making be blush.. 

[Anonymous]

Thanks for your helpful suggestion 🙂