Leica Geosystems TPS1100 Professional Series - Reference Manual - Manual (Page 197)

197
TPS1100 - Appl. Prog. Ref. Manual 2.2.0en Road+
Data Files, continued
1. Permitted elements in the Hz-
alignment
Straight defined by station
(chainage) and
coordinates of starting
point
Curve defined by station
(chainage) and
coordinates of starting
point and
Radius of curve (– = left-
hand curve; + = right-
hand curve)
Spiral between a Straight and a
Curve, defined by station
(chainage) and
coordinates of starting
point; and Parameter A
1
of spiral (negative
parameter = spiral into or
from left-hand curve)
Curve In Clothoid transition
between a Curve of
larger radius and a Curve
of smaller radius, defined
by station (chaingage)
and coordinates of
starting point; and
Radius of larger curve;
and
Radius of smaller curve
Curve out Clothoid transition
between a Curve of
smaller radius and a
Curve of larger radius,
defined by station
(chaingage) and
coordinates of starting
point; and
Radius of smaller curve;
and
Radius of larger curve
1 A =
√√√√√
L x R, where L=length of
spiral, R=radius of curve
End of
project
(EOP) station (chainage)
and coordinates of end-
point
2. Permitted elements in V-
alignments
Straight defined by station
(chainage) and height of
starting point
Curve defined by station
(chainage) and height of
starting point and
radius of curve
(– = crest; + = dip)