OR/12/032 Appendix A1 - Abbreviations
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Hobbs, P R N, Entwisle, D C, Northmore, K J, Sumbler, M G, Jones, L D, Kemp, S, Self, S, Barron, M, and Meakin, J L. 2012. Engineering Geology of British rocks and soils - Lias Group. British Geological Survey, Nottingham, UK. (OR/12/032). |
Formation abbreviations for geotechnical data
BDS | Bridport Sand Formation |
BLI | Blue Lias Formation |
BNLS | Beacon Limestone Formation |
CDI | Cleveland Ironstone Formation |
CHAM | Charmouth Mudstone Formation |
DYS | Dyrham Formation |
MRB | Marlstone Rock Formation |
RMU | Redcar Mudstone Formation |
SMD | Scunthorpe Mudstone Formation |
WHM | Whitby Mudstone Formation |
Glossary of geotechnical abbreviations & units
Parameter | Main | Alternative(s) | Units |
Liquid limit | wL | LL | % |
Plastic limit | wP | PL | % |
Plasticity index | IP | PI | % |
Modified Plasticity index | IP' | % | |
Liquidity index | IL | LI | - |
Bulk density | gb | BD | Mg/m3 |
Dry density | gd | DD | Mg/m3 |
Particle density | gp | PD | Mg/m3 |
Natural water content | w | NWC, NMC | % |
Voids ratio | e | - | |
Clay-size fraction | %CLAY | CLAY | % |
Silt-size fraction | %SILT | SILT | % |
Sand-size fraction | %SAND | SAND | % |
Gravel-size fraction | %GRAVEL | GRAVEL | % |
Activity | AC | - | |
Linear shrinkage | LS | % | |
Total sulphate | SO4 (tot) | T.Sul. | % |
Aqueous sulphate | SO4 (aq) | A.Sul. | g/l |
Sulphate in groundwater | SO4 (w) | W.Sul. | % |
Acidity | pH | PH | - |
Organic content | ORG | % | |
Carbonate content | CARB | % | |
Acid soluble Chloride | CHL (as) | % | |
Water soluble chloride | CHL (ws) | % | |
Moisture Condition Value | MCV | % | |
Maximum Dry density | MDD | Mg/m3 | |
Optimum Water Content | OWC | OMC | % |
California Bearing Ratio | CBR | % | |
Permeability | k | m/s | |
Coefficient of volume compressibility | mV | m2/MN | |
Coefficient of consolidation | cV | m2/yr | |
Compression index | CC | - | |
Swelling index | Ce | - | |
Triaxial | TX | TRIAX | |
Shear-box | SH-BX | SHB | |
Triaxial - Total cohesion | cu | TX-Cu | kPa |
Triaxial - Effective cohesion | c' | TX-C | kPa |
Triaxial - Effective friction angle | Φ' | TX-PHI | degrees |
Shear box - Peak cohesion | cp | SHB-Cpeak | kPa |
Shear box - Residual cohesion | cr | SHB-Cresid | kPa |
Shear box - Peak friction angle | Φ'p | SHB-PHIpeak | degrees |
Shear box - Residual friction angle | Φ'r | SHB - PHIresid | degrees |
Standard Penetration Test | SPT | N, blows/300 mm pen. | |
Uniaxial compressive strength | UCS | MPa | |
Young's modulus | E | MPa | |
Poisson's ratio | n | - | |
Sonic velocity (P-wave) | vp | Vel (p) | m/s |
Sonic velocity (S-wave) | vs | Vel (s) | m/s |
Point load index | IS50 | PT-LOAD | - |