Aashto Flexible Pavement Design Manual Apr 2026

The AASHTO Guide for Design of Pavement Structures (1993) serves as the primary, empirical standard for designing flexible pavements based on serviceability loss. Key design parameters include traffic loading (ESALs), reliability, subgrade stiffness, and the calculated Structural Number (SN) to determine layer thickness. For detailed, foundational information on the 1993 guide, see this AASHTO PDF . Appendix C - NHI-05-037 - Geotech - Bridges & Structures