Traverse on curve – Spectra Precision Survey Pro CE v3.6 User Manual User Manual
Page 347
Survey Pro Reference Manual
R-190
Traverse on Curve
&XUYH 7UDY RQ &XUYH
The Traverse on Curve screen will compute the PT and radius point
for a curve when the tangent azimuth at a PC point is known.
The first known part of the curve is defined by
one of the following:
•
5DGLXV : is the distance from the radius
point to the curve.
•
'HOWD : is the deflection angle.
•
'HJUHH $UF : is the deflection angle that
results in a 100-ft. arc length.
•
'HJUHH &KRUG : is the deflection angle that
results in a 100-ft. chord length.
The second known part of the curve is defined by one of the following:
•
'HOWD : is the deflection angle.
•
/HQJWK : is the arc length.
•
&KRUG : is the chord length.
•
7DQJHQW : is the distance from the PC or PT to the PI.
•
0LG 2UGLQDWH : is the distance between the curve and the chord at
the center of the curve’s length.
•
([WHUQDO : is the minimum distance between the PI and the curve.
3& 3RLQW : is the point that defines the beginning of the curve (Point
of Curvature).
$]LPXWK / %HDULQJ : is the direction of the tangent at the beginning
of the curve.
Turn
: specifies if the curve turns to the
Left
or
Right
as you face the
curve from the PC.