Standard Practice for Installing Vitriﬁed Clay Pipe Lines1
This fashionable is issued beneath the ﬁxed designation c 12; the variety straight away following the designation indicates the yr of authentic adoption or, inside the case of revision, the yr of ultimate revision. more than a few in parentheses suggests the year of final reapproval. a superscript epsilon (e) indicates an article alternate for the reason that final revision or reapproval.
This widespread has been authorised for use with the aid of groups of the department of defense
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