by Dent Cermak » Fri Feb 11, 2011 2:24 am
Use field to finish to create your line work as 2D POLYLINES. You can use polylines as breaklines under the selection set pull down. Use your points, 2d polylines, 3d polylined for your curb lines, etc. Select by window all polylines that reflect man made features (Asphalt, Concrete, buildings, etc.). Turn off your linework for things that do not affect contours (utilities, fences, etc.). These 2d polys will work like the proximity faults in LDD. This should work. It does for me. However, just like LDD, some lines will not be used on the initial surface build. (I do not know why this happens but it does in AutoCad and in Carlson, and most other DTM programs I have used.) Use the add breakline and swap tin edges editing to add the tin along these segments.