A -3% grade meets a +5% grade at a vertex (El. 146.24) directly under an overpass bridge whose underside at El. 152.74 and carries another road across the grades at right angles. What is the longest parabolic curve that can be used to connect the two grades and at the same time provide at least 5 meters of clearance under the bridge at its center line? (Round off your final answer to three decimal places).

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A -3% grade meets a +5% grade at a vertex (El. 146.24) directly under an overpass
bridge whose underside at El. 152.74 and carries another road across the grades at
right angles. What is the longest parabolic curve that can be used to connect the two
grades and at the same time provide at least 5 meters of clearance under the bridge at
its center line?
(Round off your final answer to three decimal places).
Transcribed Image Text:A -3% grade meets a +5% grade at a vertex (El. 146.24) directly under an overpass bridge whose underside at El. 152.74 and carries another road across the grades at right angles. What is the longest parabolic curve that can be used to connect the two grades and at the same time provide at least 5 meters of clearance under the bridge at its center line? (Round off your final answer to three decimal places).
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