An underpass, designed to be a vertical sag curve, is to be constructed parallel to an existing horizontal road with an elevation of 120 m such that the lowest point of the curve is directly below the center-line of the road with a clearance of 5.5 m. If the vertical curve has grades of -4% and +3% and PI is at an elevation of 105 m, determine the required length of the curve.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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An underpass, designed to be a vertical sag curve, is to be constructed parallel to an
existing horizontal road with an elevation of 120 m such that the lowest point of the curve
is directly below the center-line of the road with a clearance of 5.5 m. If the vertical curve
has grades of -4% and +3% and PI is at an elevation of 105 m, determine the required
length of the curve.
Transcribed Image Text:An underpass, designed to be a vertical sag curve, is to be constructed parallel to an existing horizontal road with an elevation of 120 m such that the lowest point of the curve is directly below the center-line of the road with a clearance of 5.5 m. If the vertical curve has grades of -4% and +3% and PI is at an elevation of 105 m, determine the required length of the curve.
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