4.3 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 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?
4.3 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 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?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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4.3 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 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?
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