Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 198)

Survey Pro Reference Manual
R-192
Horizontal Curve Layout
&XUYH &XUYH /D\RXW
The Curve Layout screen is used to assist in the layout of a horizontal
curve by computing the direction and distance to points on the curve
using a variety of methods.
Method : The method determines how the points on the
curve are laid out. Each method is described below.
•
PC Deflection : provides deflection angles and
distances to each station on the curve as if
occupying the PC and backsighting the PI. 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 Long chord : is the distance from the PC to
the current station.
o Short chord : is the distance from the
previous station to the current station.
RP
Chord
PT
PI
PC
Deflection
Current
Station
PC Deflection