Spectra-precision Survey Pro v4.5 Ranger Reference Manual Manuel d'utilisateur Page 392

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Survey Pro Reference Manual
R-384
Curve Layout
Curve Curve Layout.
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
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