AutoCAD Civil 3D

[#1]

I've changed my workflow slightly and have created 4 junctions via the wizard but kept them all in the same Corridor (previously I kept each one in its own corridor).

I now need to create the formation surfaces for the corridor (in the way I always have done it) but only one of the junctions has a surface. I then added a show boundary and the "missing" surfaces appeared but with many connecting triangles and superfluous triangles in the curved areas.

Any ideas how to get a nicely shrinkwrapped surface or is it a matter of brute force removal of triangles etc??

[#2]

When creating your surface boundary (within the corridor surfaces dialog) use the Interactive boundary method.

[#3]

Just tried this method and get the same problem - back to deleting triangles.....!!!!!

I suppose the cut and fill featurelines could be extracted and used to create external boundaries of the corridor which could be converted to polylines and used as show boundaries - just not very dynamic