PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
7th Edition
ISBN: 9781119610526
Author: Mannering
Publisher: WILEY
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Chapter 4, Problem 3P
To determine
The minimum acceptable soil resilient modulus.
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Q/ A flexible pavement was designed for the following daily traffic with a 12-year
design life: 1300 single axles at 8,000 lb each, 900 tandem axles at 15,000 lb each,
20 single axles at 40,000 lb each, and 200 tandem axles at 40,000 lb each. The
highway was designed with 4 inches of hot-mix asphalt (HMA) wearing surface, 4
inches of hot-mix asphaltic base, and 8 inches of crushed stone subbase. The
reliability was 70%, overall standard deviation was 0.5, APSI was 2.0 (with a TSI of
2.5), and all drainage coefficients were 1.0. What was the soil resilient modulus of
the subgrade used in design?
Problem 1
A highway has the following pavement design daily traffic: 300 single axles at 10,000 lb each,
120 single axles at 18,000 lb each, 100 single axles at 23,000 lb each, 100 tandem axles at
32,000 lb each, 30 single axles at 32,000 lb each, and 100 triple axles at 40,000 lb each. A
flexible pavement is designed to have 4 inches of sand-mix asphalt wearing surface, 6 inches of
soilcement base, and 7 inches of crushed stone subbase. The pavement has a 10-year design
life, a reliability of 85%, an overall standard deviation of 0.30, drainage coefficients of 1.0, an
initial PSI of 4.7, and a TSI of 2.5. What is the minimum acceptable soil resilient modulus?
Problem 2.
Consider the loading conditions in Problem 1. A rigid pavement is used with a modulus of
subgrade reaction of 200 lb/in?, a slab thickness of 8 inches, a load transfer coefficient of 3.2, a
modulus of elasticity of 5 million Ib/in2, a modulus of rupture of 600 lb/in?, and a drainage
coefficient of 1.0. How many years…
A highway has the following pavement design daily traffic: 300 single axles at 10,000 lb each, 120 single axles at 18,000 lb each, 100 single axles at 23,000 lb each, 100 tandem axles at 32,000 lb each, 30 single axles at 32,000 lb each, and 100 triple axles at 40,000 lb each. A flexible pavement is designed to have 4 inches of sand-mix asphalt wearing surface, 6 inches of soil cement base, and 7 inches of crushed stone sub base. The pavement has a 10-year design life, a reliability of 85%, an overall standard deviation of 0.30, drainage coefficients of 1.0, an initial PSI of 4.7, and a TSI of 2.5. What is the minimum acceptable soil resilient modulus?
Chapter 4 Solutions
PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
Ch. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Prob. 3PCh. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10P
Ch. 4 - Prob. 11PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19PCh. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32P
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