Add fixed, free, or floating curves to build constraint-based profile geometry.
To access the vertical curve creation commands, click the arrow next to the curve creation command displayed on the toolbar. The 
Fixed Vertical Curve (Three Points) command is displayed by default.
After clicking a button on the Profile Layout Tools toolbar, follow the command prompts on the command line.
You can use transparent commands to specify a station and elevation when you are prompted to select a point. For more information, see Transparent Commands.
Topics in this section
- Vertical Curve Design
Designing vertical curves in layout profiles requires that you understand the concepts described in this topic.
- Equations Used For Calculating Crest and Sag Curve Lengths
AutoCAD Civil 3D 2013 can calculate values from the geometric definition of a vertical curve, PVI information, as well as object and eye height.
- Adding Fixed Vertical Curves
Add fixed vertical curves to build constraint-based profile geometry.
- Adding Floating Vertical Curves
Add floating vertical curves to build constraint-based profile geometry.
- Adding Free Vertical Curves
Add free vertical curves to build constraint-based profile geometry.