Problem 2. A horizontal curve is being designed for a two-lane highway (12-ft lanes). The PC is at station 1200 + 50, the design speed is 70 mph, and a design superelevation of 0.08 ft/ft is to be used. Central angle of the curve is 40 degrees. (1) What is the min radius (measured to the centerline of the inside-most lane)? (2) Use the min value in your design, determine the station of PT.
Problem 2. A horizontal curve is being designed for a two-lane highway (12-ft lanes). The PC is at station 1200 + 50, the design speed is 70 mph, and a design superelevation of 0.08 ft/ft is to be used. Central angle of the curve is 40 degrees. (1) What is the min radius (measured to the centerline of the inside-most lane)? (2) Use the min value in your design, determine the station of PT.
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter15: Geometric Design Of Highway Facilities
Section: Chapter Questions
Problem 21P
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Please answer question below and include steps on how u get each value
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i dont understnad how in part 3. it was equal to 1201+480.51
how did we get the value of 1201? please explain
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