Soil classification using group symbols is as follows:
Group Symbol |
Classification
|
Coarse soils |
GW |
Well-graded GRAVEL |
GP |
Poorly-graded GRAVEL |
GM |
Silty GRAVEL |
GC |
Clayey GRAVEL |
|
SW |
Well-graded SAND |
SP |
Poorly-graded SAND |
SM |
Silty SAND |
SC |
Clayey SAND |
| |
Fine soils |
ML |
SILT of low plasticity |
MI |
SILT of intermediate plasticity |
MH |
SILT of high plasticity |
| |
CL |
CLAY of low plasticity |
CI |
CLAY of intermediate plasticity |
CH |
CLAY of high plasticity |
| |
OL |
Organic soil of low plasticity |
OI |
Organic soil of intermediate plasticity |
OH |
Organic soil of high plasticity |
| |
Pt |
Peat |
|