2. In a certain underpass, the vertical clearance of the 240m parabolic sag curve with PC at Station 13 + 000 and elevation 30m is 4.40m. The height of the object at the instant of perception is 1.10m while that of the driver's eye is 1.40m. If the approach grade is -4% and the passing sight distance is 320m, what is the grade of the forward tangent. At what point(Station and elevation) of the curve is the catch basin.
2. In a certain underpass, the vertical clearance of the 240m parabolic sag curve with PC at Station 13 + 000 and elevation 30m is 4.40m. The height of the object at the instant of perception is 1.10m while that of the driver's eye is 1.40m. If the approach grade is -4% and the passing sight distance is 320m, what is the grade of the forward tangent. At what point(Station and elevation) of the curve is the catch basin.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![2. In a certain underpass, the vertical clearance of the 240m parabolic sag curve with PC at
Station 13 + 000 and elevation 30m is 4.40m. The height of the object at the instant of
perception is 1.10m while that of the driver's eye is 1.40m. If the approach grade is -4% and
the passing sight distance is 320m, what is the grade of the forward tangent. At what
point(Station and elevation) of the curve is the catch basin.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F874a7b87-8206-4f72-b07b-55cb902b793f%2F92e74b97-57c9-4021-922f-da449020ea12%2F7g9yyb_processed.png&w=3840&q=75)
Transcribed Image Text:2. In a certain underpass, the vertical clearance of the 240m parabolic sag curve with PC at
Station 13 + 000 and elevation 30m is 4.40m. The height of the object at the instant of
perception is 1.10m while that of the driver's eye is 1.40m. If the approach grade is -4% and
the passing sight distance is 320m, what is the grade of the forward tangent. At what
point(Station and elevation) of the curve is the catch basin.
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