FlexLine, 180
Applications
Quadratic
parabola
A quadratic parabola has the advantage that the rate of change of
grade is constant, resulting in a "smoother" curve. A quadratic parabola
has to be defined by:
•
Start chainage and start height of P1.
•
End chainage and end height of P2.
•
Parameter, or Length (L), grade of entry straight (Grade In) and
grade of exit straight (Grade Out).
P1 Start point
P2 End point
L
Length
%
Slope
Element
Description
TSOX_114
P1
+%
-%
P2
L
TSOX_115
+%
-%
P1
P2
L
