Laboratory Testing

Geotechnical laboratory services include:

• Atterberg Limits (ASTM D-4318)
• Moisture Content Determinations (ASTM D-2216)
• Unconfined Compression testing
  • Soil (ASTM D-2166)
  • Rock (ASTM D-7012)
• Swell tests to evaluate the percent of free swell and swelling pressure (ASTM D-4546)
• Grain-Size Analysis (ASTM D-422, ASTM D-1140)
• Specific Gravity of Soil Solids (ASTM D-854)
• pH of Soils (ASTM D-4972)
• Shear strength of fine- and coarse-grained soils using
  • Direct Shear testing - soil (ASTM D-3080)
  • Direct Shear testing - rock (ASTM D-5607)
  • Tri-axial compression testing
    • Unconsolidated-Undrained Triaxial (ASTM D-2850)
    • Consolidated-Undrained Triaxial (D-4767)
    • Consolidated-Drained Triaxial (D-7181)
• Double Ring shear of rock samples
• Constant Head Permeability testing (ASTM D-5084)
• USDA Import License for importing and testing foreign source soil
• Soil resistivity and seismic/vibration analysis
• Compressive strength of rock core specimens (D-7012)

Specialty testing:

• California bearing ratio test (ASTM D-1883)
• Field CBR testing (ASTMD-4429)
• Plate load testing (ASTM D-1195)
• Windsor pin (ASTM C-803)
• Windsor probe (ASTM C-803)
• Floor flatness/floor levelness (ASTM E-1155)
• Consolidation of soil and weak rock (ASTM D-2435)
• Point Load Index testing of rock core (ASTM D-5731)
• Structural frame load testing
• Brazilian tensile testing of rock samples (ASTM D-3967)
• Hoek cell testing (ASTM D-2664)
• Depth of drilled piers
• Non-destructive measurements of concrete slabs and asphalt pavement