Applies To | |||
Product(s): | InRoads | ||
Version(s): | 08.11.07.615 | ||
Environment: | N/A | ||
Area: | Geometry | ||
Subarea: | |||
Original Author: | Jacquelyn Pettus, Bentley Technical Support Group | ||
What is a K-value?
The K-value is the horizontal distance required to achieve a 1% change in the slope of the vertical curve.
K=L/A
where L = length of curve and A = absolute value of difference in grades
"K” factors for various anticipated operating speeds are given in the AASHTO Green Book.