Vertical Curve Length Using Passing Sight Distance
Calculate the minimum curve length of a vertical curve by using passing sight distance, initial and final grade.
Vertical Curve Length Calculation Using Passing Sight Distance
Code to add this calci to your website
Lm = [ S² × (g2 − g1) ] / 864 ∀ S<Lm
Lm = 2S - [ 864 / (g2 − g1) ] ∀ S>Lm
- Minimum Curve length
- Initial grade
- Final grade
S - Passing Sight Distance
Vertical curve length calculations using passing sight distance are most useful in the design and the construction of four-lane highways.