1. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System);A.S.T.M., D2487,2010
2. Standard Test Method for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density;A.S.T.M., D4254,2002
3. Standard Test Methods for Liquid Limit, Plastic Limit and Plasticity Index of Soils;A.S.T.M., D4318,1993
4. Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis;A.S.T.M., D6913,2004
5. Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort;A.S.T.M., D698,2007