A valley curve is formed by a descending grade of I in 30 meeting an ascending grade of I in 40. Design the length of valley curve to fulfill (a) Comfort condition and (b) Head light sight distance requirement for a design speed of 85 kmph. The allowable rate of change of centrifugal acceleration may be assumed as c = 0.6 m/s³,. reaction time 2.5 s, coefficient of longitudinal friction, f = 0.35. -

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A valley curve is formed by a descending grade of I in 30 meeting an
ascending grade of I in 40. Design the length of valley curve to fulfill
(a) Comfort condition and (b) Head light sight distance requirement
for a design speed of 85 kmph. The allowable rate of change of
centrifugal acceleration may be assumed as c = 0.6 m/s³,.
reaction time = 2.5 s, coefficient of longitudinal friction, f = 0.35.
Transcribed Image Text:A valley curve is formed by a descending grade of I in 30 meeting an ascending grade of I in 40. Design the length of valley curve to fulfill (a) Comfort condition and (b) Head light sight distance requirement for a design speed of 85 kmph. The allowable rate of change of centrifugal acceleration may be assumed as c = 0.6 m/s³,. reaction time = 2.5 s, coefficient of longitudinal friction, f = 0.35.
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