Problem $19-14$ with the sur, $12,000,8000,8000,9000,9000,9000,9500,9500,12,000,$ December being $18,000,18,000,12,00$ pavement structure will be exposed to moisture levels and $20,000$ lb$/$in$.{?}^2,$ respectively. Tercent of the time, and it will take about $4$ weeks for drainapproaching saturation for $20$ per. Use untreated sandy gravel with $M_r$ of $15{10}^{3}lb\frac{s}{?}$ in$.{?}^2$ for age of water from the pavement.