Pavement Thickness Calculator
Inputs
AASHTO 1993: local road logESAL 5–6; arterial 6–7; interstate/highway 7–8
psi
AASHTO T307/Mr=1500×CBR: soft clay 3,000 psi; stiff clay 8,000 psi; sand/gravel 15,000–20,000 psi
Tab to move between fields
Results
Required Structural Number
3.9
Asphalt Surface
4 in
Total Pavement Thickness
21 in
Aggregate Base10 in
Subbase7 in