How to create a surface that reads between two feature lines?

[e_honey]

Hi all, 

I have a scenario where I'm needing to model a landscape area that, around its edges, will need to match in with the existing kerb that surrounds it. The landscape area itself I have modelled as a standalone surface with a feature line around it that's offset approximately 1.5m in from the existing kerb, and I have also made a feature line (based on the existing kerb) - these are the two elements that I want to create grading between. 

Any help would be greatly appreciated! Thank you. 

[nkiakas]

Hi @e_honey

From what you said you have at least 2 options

1. Create surface and add your feature lines as break lines
2. Create grading rules starting from your feature line

Option 2 is more dynamic and flexible to any changes of your feature lines.

If you want to do something more complicated, then you have to create corridor(s).

If you sketch something i can tell you more