Split and edit corridor surfaces

[dargon_hs]

Hi i have problem with breaking and splitting corridor surfaces. I am doing road design with bridge and i want to calculate fill volume but i want to turn off calculations for bridge construction site. I am doing it with command "gap" in the material list section of sample lines properties, but it splits corridor perpendiculary in the station of sample line i need to cut it in angle. I tried to cut some triangles from the corridor sufrace but it doesnt work tryed to give him polyline boundary but it dosen't work either.
Here is a picture of the project green lines are for the bridge construction i dont need surface there. Thank you in advance.

[neilyj666]

If you convert those green lines to featurelines and grab the elevations from the corridor surface you can add them into the corridor surface and then remove the irrelevant triangles which will create a vertical "edge".

You could also create a rhombus shape by joining the green lines up and adding this as a non destructive hide boundary to the corridor surface

[dargon_hs]

Ааh, they have to be joined together if i want to add them as boundary ? Thank you Will try and see if it works. Thanks