Please kindly answer both.. please give me both answers
Extracted text: A two layer proposed pavement structure is comprised of a layer of asphalt concrete surface layer with a coefficient of 0.43, and an aggregate base layer with a coefficient of 0.12. The required structural number above the base layer is 2.8, and the total structural number above the subgrade is 3.8. The calculated thickness in inches of asphalt layer D, is about If the calculated surface layer thickness was used, and the drainage coefficient m2 is about 0.8, then the calculated thickness in inches of the aggregate base layer D2 is about