1. Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils;ASTM D1586,2011
2. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System);ASTM D2487,2011
3. Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions;ASTM D3080/D3080M,2011
4. Standard Practice for Random Sampling of Construction Materials;ASTM D3665,2012
5. Standard Test Method for Particle-Size Analysis of Soils;ASTM D422,2007