Figure 16. Soil Classification Chart

Soils Engineering
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Lesson 2/Learning Event 2

with a Liquid Limit grater than or equal to 50 percent are high compressible (H).

FIGURE 16. SOIL CLASSIFICATION CHART

For a low compressible fine-grained soil the possible classifications are shown in Figure 16 above:

 ML

 CL

 OL

 ML-CL

The high compressible soils have an LL equal to or above 50 percent. Their possible classifications are

shown in Figure 16 above:

 MH

 CH

 OH

The only classification we have left is the symbol for peat which is PT. Peat is a fibrous organic

material such as peat moss. It is completely unsuitable for construction and is identified visually.