Lab Services: Soil testing

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Test Method Title

Standard Method of Test for Permeability of Granular Soil (Constant Head)

Reference Number

AASHTO T 215

Material

Soil

Test Property

Coefficient of Permeability

Description of Test

This test method covers the determination of the coefficient of permeability by a constant-head method for the laminar flow of water through granular soils. The procedure is to establish representative values of the coefficient of permeability of granular soils that may occur in natural deposits as placed in embankments, or when used as base courses under pavements. In order to limit consolidation influences during testing, this procedure is limited to disturbed granular soils containing not more than 10% soil passing the 75-mm (#200 sieve).

Preferred Test Sample Size

Number of Test Specimens

1

Test Specimen Size

10 kg to 2000 g, depending on maximum particle size

Keywords

Constant head, granular, permeability