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A flexible pavement has a 4-inch sand-mix asphalt wearing surface, 10-inch soil cement base, and a 10 inch crushed stone subbase. It is designed to withstand 400 20-kip single axle loads and 900 35-kip tandem axle loads per day. The subgrade CBR is 8, overall standard deviation is 0.45, initial PSI is 4.2 and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after 30 years? Assume the drainage coefficients are 1.0.

A flexible pavement has a 4-inch sand-mix asphalt wearing surface, 10-inch soil cement base, and a 10 inch crushed stone subbase. It is designed to withstand 400 20-kip single axle loads and 900 35-kip tandem axle loads per day. The subgrade CBR is 8, overall standard deviation is 0.45, initial PSI is 4.2 and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after 30 years? Assume the drainage coefficients are 1.0.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A flexible pavement has a 4-inch sand-mix asphalt wearing surface, 10-inch soil cement base, and a 10 inch crushed stone subbase. It is designed to withstand 400 20-kip single axle loads and 900 35-kip tandem axle loads per day. The subgrade CBR is 8, overall standard deviation is 0.45, initial PSI is 4.2 and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after 30 years? Assume the drainage coefficients are 1.0.
Transcribed Image Text:A flexible pavement has a 4-inch sand-mix asphalt wearing surface, 10-inch soil cement base, and a 10 inch crushed stone subbase. It is designed to withstand 400 20-kip single axle loads and 900 35-kip tandem axle loads per day. The subgrade CBR is 8, overall standard deviation is 0.45, initial PSI is 4.2 and the final PSI is 2.5. What is the probability that this pavement will have a PSI above 2.5 after 30 years? Assume the drainage coefficients are 1.0.
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