Derive an expression for super elevation in highways.
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v = speed in kmph. R = Radius of the curve in metre. ∴ e = 0.201 – 0.15 = 0.051 per meter of carriage way. ∴ Super elevation = 0.051 * 7 = 0.357 m or 35.7 cm above the inner edge of the road.
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