Traffic and Highway Engineering - With Mindtap
5th Edition
ISBN: 9781305360990
Author: Garber
Publisher: CENGAGE L
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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
INSTRUCTION: COMPLETE SOLUTION WITH FIGURES. BOX YOUR FINAL ANSWER.
An underpass crossing a reinforced concrete bridge along the Shaw Blvd has a symmetrical vertical curve, having a
downward grade of -4% meeting an upward grade of +7.5% at the vertex V at elevation 70 m and stationing of 7+700,
exactly underneath the center line of the bridge having a width of 10 m. If the required minimum clearance under the
bridge is 5 m, and the elevation of the bottom of the bridge is 78.10 m.
a) Determine the length of the vertical parabolic curve that shall connect the two tangents.
b) Determine the stationing of the point a catch basin (lowest point) will be placed.
c) Determine the elevation of the point where a catch basin (lowest point) will be placed.
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).
Chapter 7 Solutions
Traffic and Highway Engineering - With Mindtap
Ch. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10P
Ch. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28P
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- Two low-volume two-lane streets (lane width = 11 ft) intersect in an urban residential area at 120-60 degree-angle. Recommend appropriate curb configurations for this intersection based on AASHTO (2011) recommendations for a passenger car design vehicle. Draw a neat sketch for the intersection showing the dimensions of all elements you selected in your design.arrow_forwardASAParrow_forwardDetermine the impact factor of the highway curve having radius of 1546 ftand maximum design speed of 51 mph.arrow_forward
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- A vertical curve connects a +3% grade with a -2.0% grade on a rural highway at station 13+94.00 and elevation of 184.28 ft above sea level. If the length of the curve is 900 ft, calculate the following. (Type your final answer without showing equations or calculations.) 1. Station of the PVC 2. Elevation of the PVC 3. Station of the highest point 4. Elevation of the highest pointarrow_forwardThe following cross-section notes of the road was examined to calculate volumes. The width of the roadway is 12m -12 -3 +6 -6 +24 -9 STA 5+040 -15 -4.5 +6 -8 -6 -30 -12 -6 -7 STA 5+140 a. What is the cross section at STA 5+040? STA 5+140?arrow_forwardDetermine the importance of utilizing an S-Curve in the field of Construction.arrow_forward
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