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what is the maximum elevation of the top of the pipe?

what is the maximum elevation of the top of the pipe?

Traffic and Highway Engineering
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 21P
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The length of a sag vertical curve is 420 m with tangent grade if -2% and +4% intersecting at a point whose stationing is at 160+00 and elevation of 60 m above sea level. A pipe is to be positioned along the curve for drainage. The roadway at this point consists of two 3.6 m lanes with a normal crown slope of 2%. If surface of the roadway must clear the pipe by 0.75 m, what is the maximum elevation of the top of the pipe?
Transcribed Image Text:The length of a sag vertical curve is 420 m with tangent grade if -2% and +4% intersecting at a point whose stationing is at 160+00 and elevation of 60 m above sea level. A pipe is to be positioned along the curve for drainage. The roadway at this point consists of two 3.6 m lanes with a normal crown slope of 2%. If surface of the roadway must clear the pipe by 0.75 m, what is the maximum elevation of the top of the pipe?
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