Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
Publisher: Cengage Learning,
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Chapter 7, Problem 17P
To determine
Main deficiencies of multi leg intersections and using suitable diagram to show how we can correct these deficiencies.
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Referring to the vertical curve below, a -2% grade meets a 4.8% grade at the point of vertical intersection (PVI).
The vertical curve length is 625 ft.
What is the horizontal distance from the low point to PVC?
(Round to the nearest foot and fill in the blank with a number only.)
-G₁
PVC
PVI
L
PVT
+ G₂
A single-lane ramp is proposed to be designed on a section of the eastbound direction of a four-lane undivided conventional highway that is on a curve. The centerline alignment horizontal curve radius is 5000 feet. Prepare a preliminary design for the ramp, draft, and add callouts. Assume standard lane and shoulder widths. Clearly state other assumptions, if necessary. Please ensure to show all necessary curve radii and shoulder widths (including ramp shoulders).
During your internship, your supervisor asked you to design a horizontal curve with a 24-degree deflection angle for a two-lane road with 12-ft lanes. The design speed is 65 mi/h, and superelevation is limited to 4%. The point of intersection (PI) is located at 825+20, and the roadway is on level terrain. Design the horizontal curve.
Chapter 7 Solutions
Traffic And Highway Engineering
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