# K Value

K 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 (%)