I’m new to Civil 3D and Dynamo. I’m working on dynamo to calculate the tunnel settlement. I have the tunnel alignments, profiles, and ground surface. I have the idea of having the dynamo to create the surface (created from COGO points after the calculation) representing the settlement for one tunnel (like the dot line) but don’t know how to combine it with others. I’m looking for a method to superimpose two surfaces and get the final surface, then generate the settlement contours (like the solid line). May I know how to do it in dynamo?