Spectra Precision Survey Pro CE v3.6 User Manual - Manual (Page 344)

Curve Menu
R-187
RP
PT
PI
PC
Current
Station
Deflection
PI to Station
PI Deflection
•
PI Deflection : provides deflection angles
and distances to each station on the
curve as if occupying the PI and
backsight the PC. The results are given
in the following format:
o Station : is the current station on the
curve.
o Deflection : is the angle to turn to
the current station.
o PI to Station : is the distance from
the PI to the current station.
RP
PT
PI
PC
T
an Of
fset
Current
Station
T
an Dist.
T
angent
Tan - TD
Tangent Offset
•
Tangent Offset : provides perpendicular
offset information from the tangent (the
line from the PC to the PI) for each
station on the curve. The results are
given in the following format:
o Station : is the current station on the
curve
o Tan dist (TD) : is the distance on the
tangent, from the PC to the PI, or
the PI to the PT, where the
perpendicular offset occurs.
o Tan offset : is the distance,
perpendicular to the tangent, to the
curve at the particular station.
o Tan : is the length of the tangent
(the distance from the PC to the PI).
o Tan – TD : is the distance on the
tangent, from the PI to the PC, or
the PI to the PT, where the offset
occurs