Index Testing

Soil index properties

  • Water content [ASTM D2216]

  • Liquid and plastic limits [ASTM D4318]

  • Liquid and plastic limits by fall cone [ISO 17892-12]

  • Specific gravity [ASTM D854]

  • Bulk density (unit weight) [ASTM D7263]

Grain size analysis

  • Percent finer than #200 sieve [ASTM D1140]

  • Sieve analysis (standard sieve set) [ASTM D6913]

  • Hydrometer [ASTM D7928]

Erosion/dispersion

  • Double hydrometer [ASTM D4221]

  • Pinhole dispersion [ASTM D4647]

  • Crumb test [ASTM D6572]

Soil classification for engineering purposes (USCS) [ASTM D2487]