Principles of Highway Engineering and Traffic Analysi (NEW!!)
6th Edition
ISBN: 9781119305026
Author: Fred L. Mannering, Scott S. Washburn
Publisher: WILEY
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Question
Chapter 3, Problem 45P
To determine
The required rate of superelevation for the curve.
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Chapter 3 Solutions
Principles of Highway Engineering and Traffic Analysi (NEW!!)
Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10P
Ch. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 30PCh. 3 - Prob. 31PCh. 3 - Prob. 32PCh. 3 - Prob. 33PCh. 3 - Prob. 34PCh. 3 - Prob. 35PCh. 3 - Prob. 36PCh. 3 - Prob. 37PCh. 3 - Prob. 38PCh. 3 - Prob. 39PCh. 3 - Prob. 40PCh. 3 - Prob. 41PCh. 3 - Prob. 42PCh. 3 - Prob. 43PCh. 3 - Prob. 44PCh. 3 - Prob. 45PCh. 3 - Prob. 46PCh. 3 - Prob. 47PCh. 3 - Prob. 48PCh. 3 - Prob. 49PCh. 3 - Prob. 50PCh. 3 - Prob. 51PCh. 3 - Prob. 52PCh. 3 - Prob. 53PCh. 3 - Prob. 54PCh. 3 - Prob. 55PCh. 3 - Prob. 56PCh. 3 - Prob. 57PCh. 3 - Prob. 58PCh. 3 - Prob. 59PCh. 3 - Prob. 60PCh. 3 - Prob. 61PCh. 3 - Prob. 62PCh. 3 - Prob. 63PCh. 3 - Prob. 64PCh. 3 - Prob. 65PCh. 3 - Prob. 66PCh. 3 - Prob. 67P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- 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.arrow_forwardA section of highway has vertical and horizontal curves with the same design speed. A vertical sag curve on this highway connects a +1% and a +3% grade and is 420 ft long. If a horizontal curve on this highway is on a two-lane section with 12ft lanes, has a central angle of 37 degrees, and has a superelevation of 6%, what is the length of the horizontal curve?arrow_forwardA horizontal curve in an urban area is being designed for 40 mph. If there is a maximum radius of 500 feet, what is the necessary super-elevation? Is this value feasible?arrow_forward
- A section of highway has vertical and horizontal curves with the same design speed. A vertical curve on this highway connects a +1% and a +3% grade and is 420 ft long. If a horizontal curve on this highway is on a two-lane section with 12-ft lanes and has a central angle of 37 degrees and a superelevation of 6%, what is the length of the horizontal curve?arrow_forwardA curve of 100 m radius (e=8.0 % and fs=0.14) is located at a section of an existing rural highway which restricts the safe speed to 55 % of the design speed causing a high accident rate. To reduce the accident rate, a new curve is to be designed. Determine the minimum radius of this curve if the safe speed should be increased to the design speed. Assume the same values of e and fs.arrow_forward3. 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.arrow_forward
- PROBLEM #1) An existing highway with bearing of N 20deg E to be connected to another highway, with bearing of N 75deg E, by a 4-degree simple curve. What length of curve is required? (SIMPLE AND COMPOUND CURVES) Can you answer this too using the same formula?arrow_forwardPROBLEM #1) An existing highway with bearing of N 20deg E to be connected to another highway, with bearing of N 75deg E, by a 4-degree simple curve. What length of curve is required? (SIMPLE AND COMPOUND CURVES) *PLEASE REFER TO THE FORMULAS BELOW*arrow_forwardYou are asked to design a horizontal curve for a two-lane road. The road has 12 ft lanes. Due to expensive excavation, it is determined that a maximum of 34 ft can be cleared from the roads centerline toward the inside lane to provide to provide for stopping sight distance. Also, local guidelines dictate that a maximum superelevation of 0.08 ft/ft. What is the highest design speed possible for this curve?arrow_forward
- A +2.5% grade intersects with a –1.5% grade at station (53+524.25) at an elevation of 90 m. If the design speed is 90 km/h, use AASHTO (2011) criteria to determine: The minimum length of vertical curve using the rate of vertical curvature. The stations and elevations of the BVC and EVC. The elevation of each 20-m station. The station and elevation of the highpoint.arrow_forwardA vehicle traverses a superelevated curve at 64 kph. If the radius of the curve is 52 meters, and the coefficient of friction is equal to 0.4, calculate the angle of superelevation (θ) as measured from the horizontal.arrow_forwardA tow truck is searching a city street at 40 mi/h for illegally parked vehicles. It travels over an equal tangent vertical curve with an initial grade of +4.0% and final grade of -2.0%. If the height of the driver's eye is 6.0 ft and the driver spots a car 450 ft away with a height of 4.0 ft, what is the minimum length of the vertical curve for this situation?arrow_forward
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