International Organization for Standardization (ISO)
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ISO 17312:2005
Scope
This International Standard specifies the determination of the hydraulic conductivity of granular soils (e.g.
sand and gravel) using a constant-head method involving a rigid-wall permeameter to measure the laminar
flow of water. The procedure establishes representative values of the hydraulic conductivity of granular soils
that can 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 applicable only to disturbed granular
soils containing not more than 10 % soil passing a 75-μm sieve.
This procedure is applicable to the measurement of hydraulic conductivity of compacted samples of sands
and gravels containing little or no silt, where flow along the rigid wall of the permeameter has no practical
implications on the test results. This International Standard is not applicable to silt and clay, where
seepage/flow at the boundaries is not acceptable.
ISO 17312:2005 history
2005ISO 17312:2005 Soil quality - Determination of hydraulic conductivity of saturated porous materials using a rigid-wall permeameter