2.0

Chapter 1 Using the Grading Commands
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2 Under Accuracy of Projection Lines, select one of the following methods:
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Use Fixed Incremental Spacing: This method places slope projection lines
at a fixed spacing. When you choose this method, you must enter an
increment at which to draw the projections along straight lines and arc
segments (see step 3).
The following illustration shows fixed incremental spacing.
Fixed incremental spacing
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Use Automatic Spacing with Increment: This method places slope
projection lines using both the Automatic Spacing option and an increment.
For example, when the grading target is a surface, this option creates
projection lines everywhere the slope intersects with a TIN line as well as at
the vertices of the footprint. This option also creates projection lines using
the straight-line and arc increment settings (see step 3).