what do you mean by feature line

[yachar]

I am not able to get the exact meaning of feature line in civil 3D and also is their any difference between feature lines and break lines.

[Anonymous]

yachar

from C3D help

A feature line is a special line type that grading commands recognize and
use as a footprint and surfaces can use as a breakline. You can draw feature
lines, create them by converting existing objects, or export feature lines
from corridors.
A feature line represents an object in the drawing from which you want to
grade, such as a swale or a ridge line.

Go to help(F1) indes tab and type feature line. There is a lot in info
there.



dave

wrote in message news:5561972@discussion.autodesk.com...
I am not able to get the exact meaning of feature line in civil 3D and also
is their any difference between feature lines and break lines.

[yachar]

Thanks Dave

[BrianHailey]

Basically, a feature line is a powerful 3D polyline. You can grade from them as mentioned by Dave but you also have some great editing tools. Another thing that's nice about them is they know their relationship to other feature lines in the same site. For example, if you have two feature lines that cross each other and you edit the elevation of the crossing in one feature line, the other will change as well.

Oh yeah, you can also have curves.

Brian