Spectra-precision Survey Pro CE v3.6 User Manual Manuel d'utilisateur Page 340

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Curve Menu
R-183
Compute Radius Point
The Compute Radius Point screen is used to compute and optionally
store the radius point for a curve when certain parts of the curve are
known.
PC Point
: is the point that defines the beginning
of the curve (Point of Curvature).
PT Point
: is the point that defines the end of the
curve (Point of Tangency).
Turn
: specifies if the curve turns to the
Left
or
Right
as you face the curve from the PC.
Arc
: specifies if the arc is
Small
(less than 180°)
or
Large
(greater than 180°).
The final part of the curve is defined by one of
the following choices:
: is the distance from the radius point to the curve.
: is the deflection angle.
: is the deflection angle that results in a 100-ft.
arc length.
: is the deflection angle that results in a 100-ft.
chord length.
Store RP
: When checked, the computed radius point will be stored
with the name specified here.
: computes the location of the radius point.
: accesses the Curve Layout
screen (Page R-185).
: accesses the Traverse On Curve
screen (Page R-190).
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