I need to define a surface made from two other tin surfaces that intersect each other.
The first surface is the current terrain shape, and the other is the purposed excavation work. The excavation work already has graded slopes, which extend further above the first surface. The excavation work surface was made from the concrete footings elevated platforms (it's from a building, not a road).
I need to either define the intersecting polyline (resulting from the intersection of the two surfaces), or a final surface with the final resulting terrain shape after excavation works.
I tried to paste both surfaces into a third one, but the graded slopes did not end at the intersection: the boundary of the second surfaces was not discarded as i wanted...
What else can i try?
Thanx in advance