This command computes the length of vertical curve required for a user-specified sight distance, grade in, and grade out. The object height and eye height may be set using the Settings > Carlson Configure > Section-Profile Settings command.
Percent of Grade + for uphill - for downhill.
Line select/<Percent of grade in <2.0>>:
L
Select Line that defines grade in: pick the line
Slope Distance> 600.33 Horizontal Distance> 600.00
Elevation Difference: 20.00 Slope Ratio: 30.00:1 Slope Percent:
3.33
Line select/<Percent of grade out <-20.0>>:
-2.22
View Table/<Required Sight distance <450.0>>:
450
With SD<VC, Required Length of Crest Vertical Curve>
846.41
K Value> 152.35
Pulldown Menu Location: Profiles > Profile
Utilities
Keyboard Command: vcsd
Prerequisite: None