Approximated Profile

Sometimes projects don’t demand full surveys. One instance maybe the replacement of a water line. In that case the survey information for the entire roadway may be overkill and only spot elevations above the pipe may be required. There are three ways available of accomplishing this task.

Way 1

• The first step is to create a feature line representing the survey shots of the survey (Pg. 613, of Mastering Civil 3D 2012).
• This line may then be offset to either side of the original (Pg. 616, of Mastering Civil 3D 2012).
• The feature lines may then be added to a surface as breaklines (Pg. 122, of Mastering Civil 3D 2012).
• A surface profile may then be created representing the existing grade over the existing pipe.

Way 2

• The first step is to create a feature line representing the survey shots of the survey (Pg. 613, of Mastering Civil 3D 2012).
• Next project the feature line to a profile view using the elevations of the feature line (Pg. 246, of Mastering Civil 3D 2012).

Way 3

• Look at the Create a Profile without a Surface posts on this blog. Although there would be quite a bit of work to get it to work in Civil 3D 2013.