3. A 3° horizontal curve is proposed to begin at STA 12+35 and end at STA 34+35. The design speed of the roadway is 40 mph and the maximum allowable superelevation rate is 8 percent. Each of the 4 lanes (2 in each direction) is 12 feet wide and the difference between the centerline elevation and edge of pavement elevation is 9 inches for the typical crowned cross section. Based on this information, determine the following: a. The design superelevation appropriate for the curve, ea b. The station where the normal cross section will have no "adverse" slope and the distance from the PC where full superelevation will be attained.
3. A 3° horizontal curve is proposed to begin at STA 12+35 and end at STA 34+35. The design speed of the roadway is 40 mph and the maximum allowable superelevation rate is 8 percent. Each of the 4 lanes (2 in each direction) is 12 feet wide and the difference between the centerline elevation and edge of pavement elevation is 9 inches for the typical crowned cross section. Based on this information, determine the following: a. The design superelevation appropriate for the curve, ea b. The station where the normal cross section will have no "adverse" slope and the distance from the PC where full superelevation will be attained.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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