Principles of Highway Engineering and Traffic Analysi (NEW!!)
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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Chapter 3, Problem 59P
To determine

The design of the ramp for the highest design speed and the stations and elevations of the PC, PT, PVCs and  PVTs.

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A roadway has a design speed of 50 mi/h, and at station 105 + 00 a +3.0% grade roadway ection ends and at station 125 + 00 a+2.0% grade roadway section begins. The +3.0% grade section of highway (at station 105 + 00) is at a higher elevation than the +2.0% grade section of highway (at station 125 + 00). If a -4%constant-grade section is used to connect the crest and sag vertical curves that are needed to link the +3.0 and+2.0% grade sections, what is the elevation difference between stations 105 + 00 and 125 + 00? (The entire alignment, crest and sag curves, and constant-grade section must fit between stations 105 + 00 and 125 +00.)
Problem 11.6W Draw a semi-cloverleaf interchange with two loop ramps. The loop ramps are in the northeast and southwest quadrants.
A two-lane minor road intersects a two-lane undivided major road at 90 degrees,forming a four-leg intersection with traffic on the minor road controlled by a yield sign. A building islocated 185ft from the center line of the outside lane of the major road. The design speed on themajor road is 60 mi/h and the design speed on the minor is 35 mi/h. The approach grade on the minorroad is 3%. A passenger car on the minor road would like to cross the major road. Using theAASHTO procedure, determine the minimum distance required that the building must be from thenearest lane on the minor road
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