Standard Test Method for
Field Measurement of Soil Resistivity Using the Wenner
This standard is issued under the fixed designation G 57; 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.
click below Astm G 57 – 95a (Reapproved 2001) pdf free download