Vertical Curve Length Passing Calculator

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Posted by Dinesh on

This calculator calculates the minimum curve length (lm), minimum curve length (lm) using passing sight distance (s), initial grade (g1), final grade (g2) values.

Vertical Curve Length Passing Calculation

m

Formula:

Lm = [ S² × (g2 − g1) ] / 864 ∀ S<Lm
Lm = 2S - [ 864 / (g2 − g1) ] ∀ S>Lm

Where,
Lm - Minimum Curve length    
g1 - Initial grade    
g2 - Final grade    
S - Passing Sight Distance
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