Spectra Precision Survey Pro v4.6 Recon-Nomad Reference Manual - Manual (Page 76)

Survey Pro Reference Manual
R-68
Adding a Spiral
Tap the Arc / Spiral tab.
Curve: must be set to Spiral to enter a spiral curve.
Radius: is the radius of the spiral curve. (The same
radius of the circular curve adjacent to the spiral.)
Length: is the length of the spiral, measured along the
curve from the TS to the SC.
Turn: specifies if the spiral curve turns to the Right or
Left as you occupy the initial point and face the end
point.
Direction: specifies if the curve runs from where the
tangent intersects with the spiral toward where the
spiral intersects with the curve (TS->SC) or if the curve
runs from where the curve intersects with the spiral
toward where the spiral intersects with the tangent (CS-
>ST).
Adding a Vertical Curve
Tap the Parabolic Curve tab.
; Apply Curve : must be checked to enter a vertical at
curve.
Grade at EVC / BVC is the known grade at either the
end of vertical curve or beginning of vertical curve. The
grade entered here is determined by the selection made
in the Auto-Compute field.
Auto-Compute: will automatically compute the grade at
the selected point and display it on the screen. The
grade at the point that is not checked here must be
specified in the field defined above.