Vertical Curve Length Formula - Civil Engineering

Formula Used:
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
Minimum Curve Length

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