What superelevation rate would you use for a curve with a design speed of 100 km/h and a radius of 420 m? Round to the nearest whole percent. (b) A spiral transition curve is used to go from a normal crown slope with 2% cross-slopes to full superelevation for the curve described above. If the maximum difference in grade between the centerline and the edge is 1:200 and the roadway consists of two 3.6 m lanes, what is the minimum length of spiral? Round up to the next integral multiple of 20 m.

Q: Two curves on a highway have the same radii. However, one is unbanked and the other is banked at an…

A: The given data is: For unbanked Road: Maximum speed = v0 Friction between tires and road = μs Radius…

Q: Use the simplified version of the basic curve equation to calculate the minimum radius (m) for a…

A:

Q: If G1-3% and G2=4%, the required vertical curve is a sag curve. O True False QUESTION 2 If G1=-4%…

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Q: 14. The ruling minimum radius of horizontal curve of a national highway in pljain terrain for a…

A: Design speed V=100 km/hour Super elevation e=0.07 f=0.15 It is needed to find the value of the…

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Q: Q1) The project speed is 100 km/h on a divided state road with a vertical curve. The driver's…

A: Designed speed (V) = 100 kmphReaction time (t) =  2 secFriction coefficient (f) = 0.4Elevation and…

Q: Use the simplified version of the basic curve equation to calculate the minimum radius (ft) for a…

A: Given data :Design speed(V) =60 mphSuper elevation (emax) =6%Friction (fmax) = 0.12

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.