Field Methods in the Vadose Zone
by: Sebastien Fortin, E.I.T., M.Sc.
Other Methods
Other methods for determining the field-saturated hydraulic conductivity of soils include, for example, the double tube (DT) test method. This method is described by McCall et al. (2002), and summarized in ASTM Standard D5126. This test method will not be discussed any further in this document because it requires considerably more equipment and time, and is less popular than the other methods presented above. Briefly, the DT method utilizes two coaxial cylinders positioned in an auger hole. The difference between the rate of flow in the inner cylinder and the simultaneous rate of combined flow from the inner an outer cylinder is used to calculate Kfs.
The ex-situ core permeametry technique is another field-based method that is convenient for determining Kfs of a discrete soil stratum. The method is presented by Chappel and Ternan (1997) and is not discussed further in this summary. The interested reader is encouraged to consult references provided below for more details on principles and procedures regarding these and other methods.
Consult the reference list on Other Methods for permeability testing in the vadose zone.
Return to Methods for Permeability Testing.
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