A flexible pavement is consfructed with 3 inches of hof-mix asphalf (HMA) wearing urface, 6 inches of emulsion/aggregate-bituminous base, and 6 inches of crushed one subbase. The subgrade has a soil resilient modulus of 8,000 lb/in? , and M2 and 13 are equal to 1.0 for the materials in the pavement structure. The overall standard eviation is 0.5, the initial PSI is 4.5, and the TSI is 2.5. The daily traffic has 1080 20-kip ngle axles, 400 24-kip single axles, and 680 40-kip tandem axles. How many years ould you estimate this pavement would last (how long before its PSI drops below a Sl of 2.5) if you wanted to be 90% confident that your estimate was not too high, nd if you wanted to be 99% confident that your estimate was not too high?
A flexible pavement is consfructed with 3 inches of hof-mix asphalf (HMA) wearing urface, 6 inches of emulsion/aggregate-bituminous base, and 6 inches of crushed one subbase. The subgrade has a soil resilient modulus of 8,000 lb/in? , and M2 and 13 are equal to 1.0 for the materials in the pavement structure. The overall standard eviation is 0.5, the initial PSI is 4.5, and the TSI is 2.5. The daily traffic has 1080 20-kip ngle axles, 400 24-kip single axles, and 680 40-kip tandem axles. How many years ould you estimate this pavement would last (how long before its PSI drops below a Sl of 2.5) if you wanted to be 90% confident that your estimate was not too high, nd if you wanted to be 99% confident that your estimate was not too high?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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