12
Design Elements
General Guide to RoadPlus - 4.0.0en
The Vertical Alignment
Tangent
Tangent
Ta
ngent
Circle
Parabola
V
ertical Beginning of Project
(VBOP)
Station, Elevation
V
ertical End of Project (VEOP)
Station, Elevation
V
ertical Point
Tangent (VPT)
Station, Elevation
V
ertical Point Curve (VPC)
Station, Elevation, R
V
ertical Point Curve (VPC)
Station, Elevation, parameter P
V
ertical Point
Tangent (VPT)
Station, Elevation
The vertical alignment gives information about the pattern of
heights of the road axis as it is defined in the horizontal
alignment.
The
constituting elements
of a vertical alignment are
•
tangents (straight segments)
•
circles
•
parabolas.
Each constituting element is defined by individual
vertical
design elements
such as station, easting, northing, radius
and parameter P.