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Lab Services: Soil testing

Lab Services: Soil testing

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Test Method Title

Standard Test Method for Particle-Size Analysis of Soils

Reference Number

ASTM D422

Material

Soil

Test Property

Grain Size

Description of Test

This test method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of particle sizes larger than 75-µm (retained on the #200 sieve) is determined by sieving, while the distribution of particle sizes smaller than 75-µm is determined by a sedimentation process, using a hydrometer to secure the necessary data.

Preferred Test Sample Size

Number of Test Specimens

1

Test Specimen Size

Material passing #10 sieve of 115 grams for sandy soil and 65 grams for silt and clay soil

Keywords

Grain size, hydrometer analysis, hygroscopic moisture, particle-size, sieve analysis

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