Problem $2$:

The design ESAL for a mainline pavement is $5{10}^6.$ The encroaching traffic on the shoulder is $2\mathrm{.}5\%,$ and the parking traffic is $0\mathrm{.}02\%$ of the mainline. The subgrade resilient modulus is $8000$ psi, and a full$-$depth construction is used for both mainline and shoulder pavements. By the Asphalt Institute method, determine the thicknesses of mainline and shoulder pavements required. Use a MAAT of $60F.$

Problem $4$:

Repeat problem $2$ assuming that the AC layer is placed on a $6$ in$.$ untreated aggregate base.