Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 16, Problem 3P
To determine
The two main disadvantages of using turf cover on unpaved shoulders.
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2. Bushes grow near a two-lane highway circular curve with R = 160 m (measuredfrom centreline of the highway). Minimum stopping sight distance is 150 m. Totalwidth of pavement is 7.0 m. How near from the edge of the pavement can you allowthe bushes to grow? (ans M=15.69m and Minimum SSD= 150m)
a highway has +2.0% grade followed by a -2.0% grade. the PVC is at STA(1033+58.00) and the PVT is at STA(1040+62.00). If the PVC is at elevation of 4230.19 ft what is the elevation of the highway surface at STA(1036+00.00)?
please show process
Q2- Find the required area of cut/fill (m2) and Calculate the net volumes (m3) between each two
stations.
The road width value 13
The total road length is 330 m.
Filling shrinkage ratio is 15 %
The road elevation at the C.L of station (0+00) is 10.00 m. with 4 % uphill gradient
RL = Road level, GL = Ground level
Station 6+00
Station 7+00
GL
GL
1.5m
2.0m
RL
2%
6:1
RL
2%
5:1
Chapter 16 Solutions
Traffic and Highway Engineering
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- The road alignment for the construction of a highway passes through a mountainous area. There is therefore the need to cut through the mountain for safe design of the road. You have been contracted to embark on a slope stability analysis for safe and economical design of the slope. Outline the procedure you will go through to achieve this purposearrow_forwardThe road alignment for the construction of a highway passes through a mountainous area. There is therefore the need to cut through the mountain for safe design of the road. You have been contracted to embark on a slope stability analysis for safe and economical design of the slope. Outline the procedure you will go through to achieve this purpose. 2. Explain why most slope failures do occur during the raining season, especially after heavy rain.arrow_forwardINSTRUCTION: 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.arrow_forward
- Show the illustration/diagram. Show complete and detailed solution. From station 0 + 040 whose center height is 1.2 m. fill, the ground line has a uniform sclope of 6.5% going to station 0 + 100 with a center height of 3.5m. Solve for the grade of the finished roadway.arrow_forwardA car is traveling at 30 mph in the country at night on a wet road through a 273 ft. long crest vertical curve. The entering grade is 4 percent and the exiting grade is -3 percent. A tree has fallen across the road at approximately the PVT. What is the available Rate of Vertical Curvature? show solvig steps pleasearrow_forward2. Bushes grow near a two-lane highway circular curve with R = 260 m (measured from centreline of the highway). Minimum stopping sight distance is 150 m. Total width of pavement is 7.0 m. How near from the edge of the pavement can you allow the bushes to grow?arrow_forward
- PROBLEM 8 An airport runway is being redesigned to current FAA regulations. 8.1. What are the reasonable values of longitudinal and transverse gradients? 8.2. Draw two intersecting rụnways. What are the VFR. ând IFR maximum loads? 8.3. What other factors must be considered when designing airport runway pavement sections?arrow_forwardO 1::0Y O Home Work No 2.. Home Work No. 2 A vehicle initially traveling at (75 mile/hr.), skids to a stop taking (170) m to do so. the coefficient of skidding resistance (0.36). What should the grade be for this roadway. (Use t = 2.5 sec.). II >arrow_forwardFrom station 0 + 040 with center height of 1.2m. fill, the ground line makes a uniform slope of 6.5% to station 0 + 100,whose center height is 3.5 m. Findthe grade of the finished roadway. Select the correct answer: A. - 1.33%B. -2.00%C. + 2.00%D. - 1.85%arrow_forward
- 1. There is a horizontal highway curve of radius 400 m and length 200 m on this highway. Compute the set – back distance required from the center line on the inner side of the curve so as to provide for:a. SSD of 90 m;b. Safe SSD of 300 m 2. An abandoned pile of containers are located 7.5 m from the edge of the outer lane of a two-lane highway, which has 3.4 – m lanes. The obstruction is situated on the inside of a 12° horizontal curve. Use metric arc basis.a. Calculate the minimum sight distance along the curve. b. Calculate the design speed for this curvec. If the design speed calculated from part b is increased by 20 kph, calculate the distance required for the movement of the obstruction.arrow_forwardIf cross slope of a pavement is up to 10% the area is classified as Plain Steep Rolling Mountainous choise correctarrow_forwardQ# Superelevation in horizontal curve of road is responsible for your safety. Explain?arrow_forward
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