Standard Practice for Making and Curing Concrete Test Specimens in the Field1
This widespread is issued beneath the fixed designation c 31/c 31m; the number without delay following the designation suggests the yr of unique adoption or, in the case of revision, the yr of last revision. quite a number in parentheses suggests the 12 months of last reapproval. a superscript epsilon (e) shows an article alternate since the ultimate revision or reapproval.
This popular has been accredited to be used through corporations of the branch of defense.
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