A road with 4.5% upward grade has a design speed of 90kmph, if coefficient of longitudinal friction 0.36 and driver reaction time was 2.5sec. What will be the sight distance available? Now if this road has approached a crest while meeting another downward grade of 3.6%, determine the length of the vertical curve required when object and driver are located on the same vertical curve. Considering the crest (Point of intersection or PI) RL as 110.00 develop the vertical curve table to 20m interval. Show the RL of key locations as PI or EVC even though these may not fall at regular interval chosen.
A road with 4.5% upward grade has a design speed of 90kmph, if coefficient of longitudinal friction 0.36 and driver reaction time was 2.5sec. What will be the sight distance available? Now if this road has approached a crest while meeting another downward grade of 3.6%, determine the length of the vertical curve required when object and driver are located on the same vertical curve. Considering the crest (Point of intersection or PI) RL as 110.00 develop the vertical curve table to 20m interval. Show the RL of key locations as PI or EVC even though these may not fall at regular interval chosen.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A road with 4.5% upward grade has a design speed of 90kmph, if coefficient of longitudinal friction 0.36 and driver reaction time was 2.5sec. What will be the sight distance available? Now if this road has approached a crest while meeting another downward grade of 3.6%, determine the length of the vertical curve required when object and driver are located on the same vertical curve. Considering the crest (Point of intersection or PI) RL as 110.00 develop the vertical curve table to 20m interval. Show the RL of key locations as PI or EVC even though these may not fall at regular interval chosen.
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