Identifying Fine Grained Soils

sand >% of gravel sand <% of gravel sand >% gravel-sand <% gravel-

sand >% of gravel sand <% of gravel sand >% gravel-sand <% gravel-

Lean clay

Lean clay with sand Lean clay with gravel Sandy lean clay Sandy lean clay with gravel Gravelly lean clay Gravelly lean clay with sand

Silt

Silt with sand Silt with gravel • Sandy silt

■ Sandy silt with gravel

■ Gravelly silt

■ Gravelly silt with sand

sand >% of gravel sand <% of gravel sand >% of gravel sand <% of gravel

sand >% of gravel sand <% of gravel sand >% gravel-sand <% gravel-

sand >% of gravel sand <% of gravel sand >% gravel-sand <% gravel-

-► Fat clay —► Fat clay with sand —► Fat clay with gravel

Sandy fat clay —► Sandy fat clay with gravel —► Gravelly fat clay —► Gravelly fat clay with sand

-► Elastic silt with sand

-► Elastic silt with gravel

-► Sandy elastic silt with gravel

-► Gravelly elastic silt

-► Gravelly elastic silt with sand

Note: Percentages are based on estimating amounts of fines, sand, and gravel to the nearest i

OL/OH

sand >% of gravel sand <% of gravel sand >% gravel -sand <% gravel-

-► Organic soil with sand

-► Organic soil with gravel

-► Sandy organic soil with gravel

-► Gravelly organic soil

-► Gravelly organic soil with sand

Note: Percentages are based on estimating amounts of fines, sand, and gravel to the nearest 5%. Source: ASTM D2488 (fig. la). Copyright ASTM. Reprinted with permission.

ChSmaTof Agricultural

Agriculture

Soil Waste Management

^ee™"on Field Handbook

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