K Value

Written by Jerry Ratzlaff on . Posted in Civil Engineering

stopping sight distance 1K value, abbreviated as K, is the horizontal distance required to achieve a 1% change in the slope of the vertical curve.

 

K Value formula

\(\large{ K =  \frac{  L  }{ A  }  }\)   

Where:

\(\large{ K }\) = rate of vertical curvature

\(\large{ L }\) = length of vertical curve

\(\large{ A }\) = algebric difference in grade (%)

 

Tags: Equations for Transportation