This test method covers laboratory measurement of the hydraulic conductivity (also referred to as coefficient of permeability) of water-saturated coarse grained soils (e.g., sands and gravels). 1.2 This standard describes 2 methods (A and B) for determining hydraulic conductivity of coarse-grained soils. Method A incorporates use of a rigid wall permeameter and Method B incorporates the use of a flexible wall permeameter. A single- or dual-ring rigid wall permeameter may be used in Method A. A dual-ring permeameter may be preferred over a single-ring permeameter to take into account and prevent short-circuiting of permeant along the sidewalls of the permeameter (i.e., prevent sidewall leakage). 1.3 The test method is used under constant head conditions. 1.4 Water is used as the permeant with the test method. 1.5 The standard units for the hydraulic conductivity values are the SI units, unless other units are specified. Hydraulic conductivity has traditionally been expressed in cm/s in the U.S., even though the official SI unit for hydraulic conductivity is m/s. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywordshydraulic conductivity; constant head; sand; gravel; permeameter;
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Draft Under Development