An unsymmetrical parabolic curve has a forward tangent of -8% and a back tangent of +5%. The length of the curve on the left side (P.C.) is 60 m and the vertex is at elevation of 100 m. The elevation of the road just below the vertex is 97.3. Calculate the total length of the unsymmetrical curve.
An unsymmetrical parabolic curve has a forward tangent of -8% and a back tangent of +5%. The length of the curve on the left side (P.C.) is 60 m and the vertex is at elevation of 100 m. The elevation of the road just below the vertex is 97.3. Calculate the total length of the unsymmetrical curve.
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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Question
An unsymmetrical parabolic curve has a forward
tangent of -8% and a back tangent of +5%. The
length of the curve on the left side (P.C.) is
60 m and the vertex is at elevation of 100 m.
The elevation of the road just below the vertex
is 97.3. Calculate the total length of the
unsymmetrical curve.
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