Spectra-precision Survey Pro v3.80 Recon iPAQ User Manual Manuel d'utilisateur Page 163

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Screen Examples
155
Horizontal Curve Layout
The Horizontal Curve Layout screen is useful to compute the
locations of any station along a horizontal curve using one of four
different methods. The values computed can be written down and
used to later stake those stations in the field.
1.
Tap , from the Main Menu
.
2.
Select the method that you want to use to compute your curve
layout data in the
Method
field. Each method is described below.
RP
Chord
PT
PI
PC
Deflection
Current
Station
PC Deflection
The PC Deflection method computes a chord
length from the PC to the current station and a
deflection angle between the PC-PI line and the
chord.
RP
PT
PI
PC
Current
Station
Deflection
PI to Station
PI Deflection
The PI Deflection method computes the distance
from the PI to the current station and the
deflection angle between the PI-PC line and the PI
to Station line.
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