Classifying soil using the SUCS method

GW Well$-$graded gravel

GP Poorly graded gravel

GM Gravel with silt

GC Gravel with clay

SW Well$-$graded sand

SP Poorly graded sand

SM Sand with silt

SC Sand with clay

GW$-$GM Well$-$graded gravel with silt

GW$-$GC Well$-$graded gravel with clay

GP$-$GM Poorly graded gravel with silt

GP$-$GC Poorly graded gravel with clay

SW$-$SM Well$-$graded sand with silt

SW$-$SC Well$-$graded sand with clay

SP$-$SM Poorly graded sand with silt

SP$-$SC Poorly graded sand with clay

CL Low plasticity clay

CH High plasticity clay

ML Low plasticity silt

MH High plasticity silt

GC$-$GM Gravel with clay and silt

SC$-$SM Sand with clay and silt

CL$-$ML Clay and silt of low plasticity