A rising grade of 1.5 percent meets a falling grade of 4.0 percent at station 2+400 of elevation 15.0 m. Design the vertical curve connecting the two tangent grades to conform with the following safe stopping sight distance specifications. Design velocity = 40 mph • Height of an object over the pavement ahead = 0.11 m • Height of driver's eye from the road pavement = 1375 mm • Response-initiation time = 1.5 sec • Coefficient of friction between the road pavement and the tires = 0.10

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A rising grade of 1.5 percent meets a falling grade of 4.0 percent at station 2+400
of elevation 15.0 m. Design the vertical curve connecting the two tangent grades
to conform with the following safe stopping sight distance specifications.
• Design velocity = 40 mph
• Height of an object over the pavement ahead = 0.11 m
• Height of driver's eye from the road pavement = 1375 mm
• Response-initiation time = 1.5 sec
• Coefficient of friction between the road pavement and the tires = 0.10
14. Determine the stopping sight distance.
a. 133.333 m
b. 140.667 m
c. 168.475 m
d. 170.555 m
15. Determine the length of curve.
a. 344.948 m
b. 422.757 m
c. 279.001 m
d. 360.667 m
16. Determine the elevation of highest point on curve.
a. 13.119 m
b. 12.005 m
c. 14.322 m
d. 11.333 m
Transcribed Image Text:A rising grade of 1.5 percent meets a falling grade of 4.0 percent at station 2+400 of elevation 15.0 m. Design the vertical curve connecting the two tangent grades to conform with the following safe stopping sight distance specifications. • Design velocity = 40 mph • Height of an object over the pavement ahead = 0.11 m • Height of driver's eye from the road pavement = 1375 mm • Response-initiation time = 1.5 sec • Coefficient of friction between the road pavement and the tires = 0.10 14. Determine the stopping sight distance. a. 133.333 m b. 140.667 m c. 168.475 m d. 170.555 m 15. Determine the length of curve. a. 344.948 m b. 422.757 m c. 279.001 m d. 360.667 m 16. Determine the elevation of highest point on curve. a. 13.119 m b. 12.005 m c. 14.322 m d. 11.333 m
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