A stage construction is planned for a full-depth asphalt pavement with a subgrade resilient modulus of 5000 psi. The design period is 30 years and is divided into three stages: the first 5 years, the...

A stage construction is planned for a full-depth asphalt pavement with a subgrade resilient modulus of 5000 psi. The design period is 30 years and is divided into three stages: the first 5 years, the middle 10, and the last 13 The first year traffic on the design lane is 20,000 equivalent 18-kip single-axle load applications, and the annual growth rate is 3.5%. If the damage ratios at the end of each stage are 0.5.0.75. and 1.0, respectively, determine the thicknesses of HMA to be placed in each stage by the Asphalt Institute method.