One of my least favorite things to do, right up there with washing dishes and watching paint dry, is to create a corridor surface boundary in Civil 3D. Sure we’ve had the "Add Automatically" command for some time now, but most corridors are too complex for that command to apply. Most of the time we’ve had to fall back on the "Add Interactively" command which will probably continue to give me nightmares until Civil 3D 2015.
Although the nightmares will persist, in my waking hours I’ll be enjoying a new Civil 3D 2010 command which makes corridor surface boundaries a snap. Read more after the jump.
In Civil 3D 2010, when you right-click on a surface from within the boundaries tab of Corridor Properties, you will see the "Corridor extents as outer boundary" option. That’s it! No more jig lines or zooming in to a microscopic level for an hour to draw out a surface boundary.
Interestingly, when you see the boundary listed it comes up as Corridor Shrinkwrap under Definitions.
Of course the Add Interactively, Add from Polygon, and Add Automatically (sometimes) will be available, but I’m betting that most folks will use this new option most of the time. This will literally save hours throughout the life of a typical corridor project. Kudos Autodesk!