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General Guide to RoadPlus - 4.0.0en
Glossary
Glossary
A
Parameter A of a clothoïde. Defined as A
2
= R x L (A - para-
meter, R - radius, L - length of portion of curve).
Alignment
A curvilinear line describing the plan or profile view of a project.
Horizontal and Vertical Alignments exist.
Backward Station Equation
See overlap equation
Batter
Slope
Carriage Way
The final driving path. Also called roadway or travel way.
Catch Point
A point marking the intersection between the design surface
and the original ground.
Centre Line
The plan view alignment, also called Horizontal Alignment.
Chainage
The cumultative distance along the horizontal alignment,
frequently but not always starting at zero. Also called station.
Clothoïde
A horizontal curve with constantly linear increasing curving.
Defined by A
2
= R x L (A - parameter, R - radius, L - length of
portion of curve).
Cross Section
A profile view of a project at a particular station.
Curve
A horizontal curve of constant radius, e.g. a portion of a circle.