A vertical parabolic curve is to be used as a sag curve, and it is desired to know the location and elevation of the low point. The curve is 750 ft long, and the minus grade of 3.6 percent intersects a plus grade of 6.2 percent at station 240+80.00. Calculate the low point of the curve if the intersection at station 240+80.00 is at elevation 426.84.
A vertical parabolic curve is to be used as a sag curve, and it is desired to know the location and elevation of the low point. The curve is 750 ft long, and the minus grade of 3.6 percent intersects a plus grade of 6.2 percent at station 240+80.00. Calculate the low point of the curve if the intersection at station 240+80.00 is at elevation 426.84.
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 16P
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Transcribed Image Text:A vertical parabolic curve is to be used as a sag curve, and it is desired to know the
location and elevation of the low point. The curve is 750 ft long, and the minus grade of
3.6 percent intersects a plus grade of 6.2 percent at station 240+80.00. Calculate the low
point of the curve if the intersection at station 240+80.00 is at elevation 426.84.
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