Standard Practice for
Certification of Personnel Engaged in the Testing of Soil
and Rock1
This standard is issued under the fixed designation D 5255; 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 to download Astm D 5255 – 01 Pdf free
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Click here to Astm D 5254 – 92 (Reapproved 1998) Pdf free download