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 |
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\(\large{ K = \frac{ L }{ A } }\) | ||
Symbol | English | Metric |
\(\large{ K }\) = rate of vertical curvature | \(\large{ft}\) | \(\large{m}\) |
\(\large{ L }\) = length of vertical curve | \(\large{ft}\) | \(\large{m}\) |
\(\large{ A }\) = algebric difference in grade (%) | \(\large{dimensionless}\) |