A flexible pavement is designed to have a 4-inches of sand-mix asphalt wearing course, 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 terminal serviceability index ...