Spectra Precision Survey Pro v5.0 - Manual (Page 200)

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.
Curve length: is the length of the vertical curve (the horizontal distance between the PVC and PVT).
Hi/Lo Elevation: is the elevation of the curve at the location where the tangent is zero (the crest of the curve).
Station: is the station where the other point is located on the curve.
Elevation: is the elevation of the other point.
[Solve]: computes the details for the vertical curve.
[Layout]: opens the Parabolic Layout screen 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.
Parabolic Layout
[Curve] [Parabolic Layout]
The Parabolic Layout screen allows you to compute an elevation at a specified station, or a station at a specified
elevation.
Beg. Grade: is the percent grade at the PVC.
End Grade: is the percent grade at the PVT.
Curve Length: is the horizontal distance between the PVC and PVT.
PVC Station: is the starting station at the PVC.
PVC Elevation: is the elevation at the PVC.
Solve for: is where you select to solve for an unknown Elevation, or an unknown Station. The selection made here
determines which of the following choices will be available.
Interval: When checked, the Current station can be incremented by the specified interval by using the Sta - and Sta +
Survey Pro Help 5.00
200