Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 62)

Survey Pro Reference Manual
R-56
Edit Segment – Arc (Horizontal Curve) Card
The Arc card is used to add a horizontal curve to the alignment.
The curve can be defined by two of the following:
• 5DGLXV : The distance from the radius point to
the curve
• 'HOWD : The internal angle from center to
tangent points.
• 'HJUHH $UF : The internal angle equivalent to a
100-ft arc length.
• 'HJUHH &KRUG
: The internal angle equivalent to
a 100-ft chord length.
• /HQJWK : The arc length.
• &KRUG : The chord length.
• 7DQJHQW : The distance from the PC or PT to the
PI.
• 0LG 2UG : The distance between the curve and the chord at
the center of the curve’s length.
• ([WHUQDO : The minimum distance between the PI and the
curve.
Turn : specifies if the curve turns to the Left or Right as you face
the curve from the beginning.
; Make this segment tangent to previous : When checked, the start
of the specified curve will be tangent to the ending tangent of the
previous segment.
$]LPXWK / %HDULQJ : is used to enter a known azimuth or bearing
at the start of the curve.
OK: adds the curve to the current horizontal alignment.