How to add flat surface in slope?

As you can see, the slope is a constant gradient. How is it possible to add flat surface onto the slope?

Would greatly appreciate any advise.

Thank you

Ramp-yh.gh (10.9 KB)

You didn’t internalize your curves:

the boolean toggle lets you decide if you start with a flat or ramped step:


Ramp-yh_Re.gh (18.1 KB)


ramp_2021Apr29a.gh (7.8 KB)