Bend Lines

The Bend Line grading object attempts to relax the slope of surface triangles along a line. The line is not necessarily straight but can have corners or curves. During optimization, surface triangle edges that touch a Bend Line object will be set to a minimum slope of zero and a maximum slope of infinity.

Bend Lines are useful for areas where slope constraints can be relaxed to reduce earthwork.

The following examples show optimization with a global maximum slope constraint of 33%.

Source Surface	Optimized Surface	Optimized with Bend Line