Drain Line
Places a reference line to control drainage slope direction along a surface.
To place a drain line
Sketch a line for drainage direction
or select existing geometry.
Create the drain line.
Click
Drain Line in the Grading Object Tool Palette. Then press Enter.
Edit drain line properties.
Specify line names and breaklines in the Drain Line Properties dialog.
Learn more
Videos
Using Drain Lines and Low Points
Understanding Minimum Drain Inclination
Tutorials
Analyzing the Convergence Plot and Violations
Sample files