The length of the common tangent of a compound curve is equal to 68.62m. The common tangent makes an angle of 12˚ and 18˚ respectively to the tangents of the compound curve. If the length of the tangent of the first curve (on the side of PC) is equal to 41.02m. (a) Compute the radius of the second curve. (b) Compute the radius of the first curve. (c) Compute the stationing of the PT if PC is at 20+042.20

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Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.