Any section thru a toposurface will display its profile, but the profile lines in a view cannot be used as snapping references, nor can they be extracted as detail or model lines. This has been an unfortunate known limitation... until now. The 'surface tool triangulation' posted by Anthony in the AUGI forum allow the creation of model lines that follow a toposurface profile based on the location of a pad and a wall. This add-on can be downloaded here, and works like a charm:
http://forums.augi.com/showthread.php?p=1089399#post1089399
The advantages are multiple. You can convert the profile lines into detail lines, utilize the profile to trace the top of a retaining wall, offset the profile to define an vertical easement, and or export just the profile lines to other CAD\CIVIL applications.
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