Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 14, Problem 17P
The following table shows the stations and ordinates for a mass diagram. The free-haul distance is 600 ft. Overhaul cost is $12 per station yard.
(a) Use the method of moments to compute the additional cost that must be paid to the contractor.
(b) Sketch the ground profile if the finished grade of this roadway section is level (0 percent).
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A-1.10% grade meets a +0.60% grade at station 36+00 and elevation 800.00 ft. The
+0.60 grade then joins a +2.40 grade at station 39+00.
Part A
Determine the elevation at the low point of the curve.
Express your answer in feet to six significant figures.
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Determine the station at the low point of the curve.
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O 38+42.763
O 35+40.763
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Determine the cross sectional area for a 10m wide roadway at Sta 12+198 using the given cross section notes:
Round your answer to 3 decimal places.
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.
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- A reversed curve with diverging tangent is to be designed to connect to three traversed lines for the portion of the proposed highway. The lines AB is 185 m, BC is 122.40 m, and CD is 285 m. The azimuth are Due East, 242°, and 302° respectively. The following are the cost index and specification: Type of Pavement = Item 311 (Portland Cement Concrete Pavement) Number of Lanes = Two Lanes Width of Pavement = 3.05 m per lane Thickness of Pavement = 280 mm Unit Cost = P1,900 per square meter It is necessary that the PRC (Point of Reversed Curvature) must be one-fourth the distance BC from B. A) Find the radius of the first curve. B) Find the length of road from A to D. Use arc basis. C) Find the cost of the concrete pavement from A to D. ERSIarrow_forwardA reversed curve with diverging tangent is to be designed to connect to three traversed lines for the portion of the proposed highway. The lines AB is 185 m, BC is 122.40 m, and CD is 285 m. The azimuth are Due East, 242°, and 302° respectively. The following are the cost index and specification: Type of Pavement = Item 311 (Portland Cement Concrete Pavement) Number of Lanes = Two Lanes Width of Pavement = 3.05 m per lane Thickness of Pavement = 280 mm Unit Cost = P1,800 per square meter It is necessary that the PRC (Point of Reversed Curvature) must be one-fourth the distance BC from B. Find the radius of the first curve.arrow_forwardA reversed curve with diverging tangent is to be designed to connect to three traversed lines for the portion of the proposed highway. The lines AB is 185 m, BC is 122.40 m, and CD is 285 m. The azimuth are Due East, 242°, and 302° respectively. The following are the cost index and specification: Type of Pavement = Item 311 (Portland Cement Concrete Pavement) Number of Lanes = Two Lanes Width of Pavement = 3.05 m per lane Thickness of Pavement = 280 mm Unit Cost = P1,900 per square meter It is necessary that the PRC (Point of Reversed Curvature) must be one-fourth the distance BC from B. A) Find the radius of the first curve. B) Find the length of road from A to D. Use arc basis. C) Find the cost of the concrete pavement from A to D.arrow_forward
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