Page 6 - Structural Highway Design_Neat
P. 6
Cobbles – above 3 inches.
Gravel – 3 inches to a No. 4 sieve
Coarse Sand – No. 4 sieve to No. 10 sieve
Medium Sand – No. 10 sieve to No. 40 sieve
Fine Sand – No. 40 sieve to No. 200 sieve
3. Pavement Design Process
4.1. Flexible Pavement
A typical structural design results in a series of layers that gradually decrease in
material quality with depth.
Figure 2-1 shows a typical section for a flexible pavement.
Figure 2-1. Typical section for a flexible pavement.
6
