Standard Speciﬁcation for Ductile Iron Culvert Pipe1
This general is issued under the ﬁxed designation a 716; the wide variety without delay following the designation suggests the year of authentic adoption or, in the case of revision, the year of ultimate revision. A variety of in parentheses shows the year of closing reapproval. A superscript epsilon (e) indicates a piece of writing trade since the last revision or reapproval.
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You can also get ASTM A 714 – 99 International standard