Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 399)

Curve Menu
R-391
Note: When the begin and end grades are both positive or both
negative, the high / low elevation will not be located between the PVC
and PVT.
PVC / PVI Station: is the station for the specified point.
PVC / PVI Elevation: is the elevation for the specified point.
Begin Grade: is the grade at the tangent of the PVC.
End Grade: is the grade at the tangent of the PVT.
Solve : computes the details for the vertical curve.
Layout : opens the Parabolic Curve Layout screen (Page R-392)
where you can solve for an elevation at a specified station, or solve for
a station at a specified elevation.
Results
PVC sta.: is the station at the PVC.
PVI sta.: is the station at the PVI.
PVT sta.: is the station at the PVT.
Hi/Lo sta.: is the station where the vertical curve has a tangent
equal to zero (the crest of the curve).
elev.: is the elevation for the respective point.