Soil Classification System:1. USDA 2. AASHTO 3. USCS
Soil Classification System:
1. USDA (Triangular Textural Classification System of U.S. Department of Agriculture)
2. AASHTO (America Association of State Highway and Transportation Officials Classification System)
3. USCS (Unified Soil Classification System)
January 22, 2026
January 22, 2026
January 22, 2026
January 21, 2026
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January 21, 2026
January 20, 2026
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