A horizontal curve on a two-lane highway (with 7.2 m lanes) has a central angle of 33 degrees and is designed for 60 km/h with a 8% superelevation. First, if the PI is at station 30+ 000, what is the station of the PT and how many feet have to be cleared from the inside lane's lane-shoulder edge to provide adequate stopping sight distance? Second, if the normal component of centripetal force was considered, how much shorter would the radius of the curve be?
A horizontal curve on a two-lane highway (with 7.2 m lanes) has a central angle of 33 degrees and is designed for 60 km/h with a 8% superelevation. First, if the PI is at station 30+ 000, what is the station of the PT and how many feet have to be cleared from the inside lane's lane-shoulder edge to provide adequate stopping sight distance? Second, if the normal component of centripetal force was considered, how much shorter would the radius of the curve be?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A horizontal curve on a two-lane highway (with 7.2 m lanes) has a
central angle of 33 degrees and is designed for 60 km/h with a 8%
superelevation. First, if the PI is at station 30+ 000, what is the
station of the PT and how many feet have to be cleared from the
inside lane's lane-shoulder edge to provide adequate stopping sight
distance? Second, if the normal component of centripetal force was
considered, how much shorter would the radius of the curve be?
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