Hi! Civil 3D beginner here, sorry if this is a dumb question.
I'm designing a road the connects to an existing road. The cross slope of the new road needs to match the longitudinal slope of the existing road's right edge of pavement at station 0+000, and I want the cross slope of my new road to gradually change to a certain value. So for example, on the right side of the road the beginning cross slope is 2%, and 30 meters ahead I want the cross slope to be -3% and it should remain -3% for the rest of the corridor. How is this done in an easy way?
I created a feature line for the existing roads right edge of pavement and got elevations from the existing ground, so I have the cross slopes at the starting station. So it's easy to have an assembly with the correct starting cross slope. But to have the cross slope gradually change to another value is where I'm failing.
Superelevation is something I have tried, but couldn't understand how to make it work (since the part of the road I want to change the cross slope includes a straight line, a curve and another straight line).
I tried connected aligments but couldn't modify over what distance the gradual slope should change.
I tried creating two asseblies with different cross slopes but then the corridor would get a sharp edge where 2% turned into 3% all of a sudden.