Comparison: AASHTO & Unifical Soil Classification System | Soil Engineering
Learn about the comparison between AASHTO and unifical soil classification system. Comparison # AASHTO Classification System: American Association of State Highway and Transport Officials (AASHTO) soil classification system is based on both the particle size and the plasticity characteristics. According to this system, soils are classified into eight groups A-1 to A-8, the last being peat or muck. Soils within [...]