Spiral / Transition Curve Deflection Angle Calculator

Calculate the deflection angle of the spiral / transition curve from tangent to any point with the given length and the radius of simple curve.

Spiral / Transition Curve Deflection Angle Calculator

Calculate the deflection angle of the spiral / transition curve from tangent to any point with the given length and the radius of simple curve.

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Formula Used:

i = L² / ( 6×R×Ls) Where, i - Tangent deflection angle to any point on the curve L - Length of spiral from tangent to any point Ls - Length of spiral R - Radius of Simple Curve spiral curve

Spiral / transition curve deflection angle calculations are useful in constructions of roads to change the curvature and super elevation.

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