Road Pavement

A technical drawing labeled as “ROAD PAVEMENT” showing a cross-section of a road structure without scale. On the left side, there is a profile view of a curb, adjacent to which several layers of road materials are depicted. The layers include, from top to bottom: a 1 1/2 inch wearing course, a 1 1/2 inch leveling course, a 2 1/2 inch base course, and a 10-inch MDOT 21AA limestone layer compacted to 98% maximum density. There are accompanying labels with arrows indicating each layer’s properties, such as material specifications and permissible content ratios. Aggregate extends 6 inches beyond the back of the curb, with a note on the necessity to compact the existing base prior to installing the limestone base.