A valley curve of a State Highway is formed by a descending gradient of 1 in 20 meeting an 1.10 ascending gradient of 1 in 30. Design the length of a valley curve to fulfil both comfort condition and head light sight distance requirement for a design speed of 80 kmph. Assume allowable rate of change of centrifugal acceleration C = 0.60 m/sec². Suggest the best suitable shape of the valley curve. Consider reaction time t = 2.5 sec and coefficient of longitudinal friction f = 0.35.

A valley curve of a State Highway is formed by a descending gradient of 1 in 20 meeting an 1.10 ascending gradient of 1 in 30. Design the length of a valley curve to fulfil both comfort condition and head light sight distance requirement for a design speed of 80 kmph. Assume allowable rate of change of centrifugal acceleration C = 0.60 m/sec². Suggest the best suitable shape of the valley curve. Consider reaction time t = 2.5 sec and coefficient of longitudinal friction f = 0.35.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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