Design a flexible pavement (Two way-Two lane) for a subgrade CBR value of 3.5,the number of daily traffic as shown in the table below, the reliability value is 90%, the standard deviation 0.35, the initial serviceability 4.5, terminal serviceability 2.20 and effect of weather swelling only. Assuming a 20-year design life and growth rate 2%. Assume that 80% of the ESALS in one direction.. (E2-30,000 psi, E3-11,000 psi, m. m, 1.08). Sketch cross section in your design. All axles should be taken in ESAL calculations. (Take IMPa = 145.0 psi)

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter20: Design Of Rigid Pavements
Section: Chapter Questions
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Design a flexible pavement (Two way-Two lane) for a subgrade CBR value of 3.5,the number of daily
traffic as shown in the table below, the reliability value is 90%, the standard deviation 0.35, the initial
serviceability 4.5, terminal serviceability 2.20 and effect of weather swelling only. Assuming a 20-year design
life and growth rate 2%. Assume that 80% of the ESALs in one direction.. (E2-30,000 psi, E3-11,000 psi,
m. m, 1.08). Sketch cross section in your design. All axles should be taken in ESAL calculations. (Take
IMPa =145.0 psi)
Vehicle Class
Passenger Car
Single-unit truck
Single-unit truck
Semi-trailer
Light truck
Large semi-trailer
Axles Weights
2 single axles, 2000 lb/axle
1 single axle, 8000 lb/axle
1 single axle, 14,000 lb/axle
I single axle, 7000 lb/axle
1 tandem axle, 20,000 lb/axle
I tredom axle, 28,000 lb/ axle
1 single axle, 12,000 lb/axle
2 tandem axles, 22,000 lb/axle
2 single axles, 3000 lb/axle
1 single axle, 12,000 lb/axle
2 tandem axles, 28,000 lb/axle
Number of Vehicles/Day
25000
800
500
100
15000
50
Transcribed Image Text:Design a flexible pavement (Two way-Two lane) for a subgrade CBR value of 3.5,the number of daily traffic as shown in the table below, the reliability value is 90%, the standard deviation 0.35, the initial serviceability 4.5, terminal serviceability 2.20 and effect of weather swelling only. Assuming a 20-year design life and growth rate 2%. Assume that 80% of the ESALs in one direction.. (E2-30,000 psi, E3-11,000 psi, m. m, 1.08). Sketch cross section in your design. All axles should be taken in ESAL calculations. (Take IMPa =145.0 psi) Vehicle Class Passenger Car Single-unit truck Single-unit truck Semi-trailer Light truck Large semi-trailer Axles Weights 2 single axles, 2000 lb/axle 1 single axle, 8000 lb/axle 1 single axle, 14,000 lb/axle I single axle, 7000 lb/axle 1 tandem axle, 20,000 lb/axle I tredom axle, 28,000 lb/ axle 1 single axle, 12,000 lb/axle 2 tandem axles, 22,000 lb/axle 2 single axles, 3000 lb/axle 1 single axle, 12,000 lb/axle 2 tandem axles, 28,000 lb/axle Number of Vehicles/Day 25000 800 500 100 15000 50
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ISBN:
9781305156241
Author:
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Publisher:
Cengage Learning