A symmetrical parabolic summit curve connects two grades of +5.9% and -4.2%. It is to pass through a point "D" on the curve at station 25+180m. If the stationing of the grade intersection is 25+145m and the stationing of PVC is 24+979m, determine the following:

A symmetrical parabolic summit curve connects two grades of +5.9% and -4.2%. It is to pass through a point "D" on the curve at station 25+180m. If the stationing of the grade intersection is 25+145m and the stationing of PVC is 24+979m, determine the following:

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 7P

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A. Length of the parabolic curve

Answer:

B. Stationing of the highest point.

Answer:

C. Difference in elevation between PVC and PV

Answer:

D. Difference in elevation between PVC and point D

Answer:

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