Geotechnical Testing

Design and construction of cost-effective functional structures require a thorough understanding of local soil, rock and groundwater conditions. TERRA has the capability and expertise to provide a wide range of Geotechnical testing services to assess the risks associated with subsurface investigation and to support all phases of a project – from preliminary design through the completion of the construction.

Grain Size Distribution (ASTM D 422)
Moisture/Density Relation (ASTM D 698/1557)
Specific Gravity (ASTM D 854)
Materials Finer than #200 Sieve (ASTM D 1140)
Plate Bearing (ASTM D 1196)
California Bearing Ratio (ASTM D 1883)
Unconfined Compression – Soil (ASTM D 2166)
Permeability – Constant Head (ASTM D 2434)

Consolidation (ASTM D 2435)
Classification of Soils (ASTM D 2487)
Triaxial (ASTM D 2850)
Unconfined Compression – Rock (ASTM D 2938)
Direct Shear (ASTM D 3080)
Atterberg Limits (ASTM D 4318)
In-Place California Bearing Ratio (ASTM D 4429)
Permeability – Falling Head (ASTM D 5084)