Can We Create a Vertical Curve on a Feature Line in Civil 3D?

[kamalgaramja556]

Hello everyone,

I’m working on a grading project in Civil 3D and need to incorporate vertical curves along a feature line to ensure smooth elevation transitions. However, I’m unsure if this is possible directly or if there’s a workaround.

My Questions:

1. Is there a native way to add parabolic or circular vertical curves to a feature line (similar to alignments or profiles)?

2. If not, what are the best practices to approximate a vertical curve on a feature line? 

3. Are there any LISP routines, add-ons, or Civil 3D tricks to achieve this efficiently?

Desired Outcome:

A smooth surface derived from the feature line (with vertical curves) that dynamically updates in section drawings.

[Joe-Bouza]

The easiest way would be use and alignment and profile, where you can easily define the vertical curve, then extract the FL from alignment 

[kamalgaramja556]

But I need it on Plan view. Matching the exact location. How to achieve ?

[Joe-Bouza]

That is exactly what that will do.

Instead of drawing a FL in plan, draw an alignment. Now profile and add your VC.

Now go to FL >> from alignment>> choose the profile > leave dynamic or turn off. You now have you VC in plan