GATE CE 2023 Set 1 — Question 35
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Transportation Engineering → Horizontal & Vertical Alignment → Transition Curves
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Question
For a horizontal curve, the radius of a circular curve is obtained as with the design speed as . If the allowable jerk is , what is the minimum length (in m, in integer) of the transition curve?___________________
Correct answer
15 to 15
Solution
The minimum length of a transition curve () based on the rate of change of centrifugal acceleration (jerk, ) is given by the formula:where:
(design speed)
(radius of circular curve)
(allowable jerk)Substituting the values:The minimum length of the transition curve is .
(design speed)
(radius of circular curve)
(allowable jerk)Substituting the values:The minimum length of the transition curve is .
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