Two highway tangents intersect with a right intersection angle l = 12030' at station 0+152.204 m. If a radius of 300 m is to be used for the circular curve, what is the length of the last sub- chord if the curve will be laid out with stakes at 20 m intervals?
Two highway tangents intersect with a right intersection angle l = 12030' at station 0+152.204 m. If a radius of 300 m is to be used for the circular curve, what is the length of the last sub- chord if the curve will be laid out with stakes at 20 m intervals?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Two highway tangents intersect with a right intersection angle I = 12030' at station 0+152.204 m. If a radius of 300 m is to be used for the circular curve, what is the length of the last sub-
chord if the curve will be laid out with stakes at 20 m intervals?
Selected Answer:
4.15
A vertical parabolic sag curve of an underpass has a grade of -4% followed by a grade of +2% intersecting at station 12+150.60 at elevation 124.80 above sea level. The change of grade of
the sag curve is restricted to 0.6%. Compute the elevation at station 12+125.60.

Transcribed Image Text:Compute the minimum radius (meters) of a circular curve for a highway designed for 110 km/h. The maximum superelevation rate is 12%.
Selected Answer:
414.24
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