ned for a maximum speed of 88 kph. The coefficient of friction between the tired and pavement is 0.40. What is the required super-elevation in percent?
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- A 8-degree simple curve is to be designed for a maximum speed of 91.8kph. The coefficient of friction between the tires and pavement is 0.32. What is the required super elevation in percent?The degree of curve of a simple curve is 4^0. Compute the desired super-elevation required if the design speed of a car passing through the curve is 75kph and the skid resistance is equal to 0.12.A 12-degree simple curve is to be designed for a maximum speed of 88 kph. The coefficient of friction between the tired and pavement is 0.4. What is the required super-elevation in percent?a. 7.87 b. 8.11 c. 63.8 d. 23.8 e. none of the above
- A horizontal curve is to connect PC on freeway B and PT on freeway A to serve traffic turning from freeway B be two freeway A if the design speed is 45 mph (66 ft per second) super elevation is 2.5 and the coefficient of friction between tire and pavement is .10 what should be the minimum radius of the horizontal curve in feet?3. The maximum allowable speed of a car that could travel a circular curve is 85 kph. If the impact factor is 0.24, determine the degree of the circular curve. Round off to two decimal places.determine the degree of the circular curve. if the maximum allowable speed of a car that could travel a circular curve is 85 kph and the impact factor is 0.17.
- An equal-tangent sag vertical curve is designed for 100 kph. The lowest point is at elevation 308.0 m. The initial grade is -2% and the final grade is +1%. What is the elevation of the PVC?A 0.12-radian simple curve is to be designed for a maximum speed of 88 kph. The coefficient of friction between the tired and pavement is 0.30 What is the required super-elevation in percent? A. 6.55 B. 5.66 C. 2.38 D. 23.8 E. None of the aboveCompute the ruling minimum radius of horizontal curve for a design speed of 80 kph,f=0.18 and e = 0.078. For ruling minimum radius, increase the design speed by 16 kph.
- the maximum allowable speed of a car that could travel a circular curve is 72 kph if the impact factor is 0.16 determine the degree of circularDesign a vertical summit parabolic curve connecting two tangent grades, a 5% grade intersecting a -3.4% grade at station 1 + 990 with an elevation 42.30 meters. The parabolic curve shall conform with the following safe stopping sight distance requirements. Design velocity = 60 kph Height of driver’s eye from the road pavement = 1.37 meters Height of an object over the pavement ahead = 100 mm. Perception/reaction time = 0.75 second Coefficient of friction between the road pavement and the tires = 0.15 Determine the following: Stopping sight distance The length of the curve The elevation of the highest point on curve.A vertical parabolic curve has a sight distance of 130m. The curve has tangent grades of +2.8% and -1.6% if the height at the driver ‘s eye from the pavement is 1.08m and the height of the object is 0.50m A.)Compute the max speed of the car that can pass thru this curve. B.)Compute the length of the vertical curve in meters for every 1% change in grade. C.)Compute the equivalent radius of the vertical curve.