does anyone have suggestions for best workflow to create an existing pavement terrain? I want to reference it to my earthwork files in order to calculate unsuitable. I tried extracting the same 3D graphics that I thought were used to create the overall existing topo, but I get different triangulation. Perhaps terrain was modified or cleaned up from these original graphics? I also thought about clipping a terrain from the original, but does that mean I have to create a closed shape outlining all of my existing pavement? How can I easily extract a boundary?
Thanks for any help.
As you have done, I would use the pavement graphics from the original survey data. The triangulation will be different - you will probably have to assign 'Boundary' feature type to outside edge lines, for example - as you are using a subset of the original data.
Thank you. I ended up creating a clipped terrain, then limiting the size of the triangle sides. Any small triangles left over in critical returns I deactivated the rules on the terrain and deleted the triangles via Edit Terrain. I appreciate the feedback.