SAG Vertical Curve Length Formula - Civil Engineering

Formula Used:
Lm = ( A×S² ) / ( 200 × (H + S ×tanβ) ) ∀ S<Lm
Lm = 2S − { ( 200 × (H + S ×tanβ) ) / A } ∀ S>Lm

If S > L, then the first formula is used, if L > S, then the second formula is used.

Where,

A - Absolute difference between g2 and g1
S - Sight Distance
Lm - Minimum Curve Length
H - Height of headlight
β - Angle of Headlight Beam

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