Designation: D 2434 – 68 (Reapproved 2006)
Standard Test Method for
Permeability of Granular Soils (Constant Head)
1
This standard is issued under the fixed designation D 2434; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This test method covers the determination of the coef-
ficient 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 perme-
ability 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-µm (No.
200) sieve.
1.2 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
2
D 422
Test Method for Particle-Size Analysis of Soils
D 4253
Test Methods for Maximum Index Density and Unit
Weight of Soils Using a Vibratory Table
D 4254
Test Methods for Minimum Index Density and Unit
Weight of Soils and Calculation of Relative Density
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