
Geotechnical & Earth Materials
We characterise soil, rock and fill from basic index properties through to shear strength and compressibility, giving designers the parameters they need for foundations, embankments and slopes.
Soil
- Moisture contentASTM D2216
- Soil classification (USCS)ASTM D2487
- Sieve / particle size analysisASTM D6913 / AASHTO T88
- Hydrometer analysisASTM D7928
- Specific gravity of soil solidsASTM D854 / AASHTO T100
- Atterberg limits (LL, PL, PI)ASTM D4318 / AASHTO T89, T90
- Standard and modified ProctorASTM D698 / D1557
- California Bearing Ratio (CBR)ASTM D1883 / AASHTO T193
- Unconfined compressive strengthASTM D2166
- Direct shearASTM D3080
- Consolidation (oedometer)ASTM D2435
- Triaxial UU / CU / CDASTM D2850 / D4767 / BS 1377-8
Rock
- Density, porosity and absorptionASTM D7263 / D6473
- Rock UCS and triaxial strengthASTM D7012
- Point load strength indexISRM / ASTM D5731
- Brazilian tensile strengthASTM D3967
- Direct shear of discontinuitiesASTM D5607
- Fly ash bulk density and specific gravityASTM C29 / C188
ASTM · AASHTO · BS 1377 · ISRM





