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1.1 This specification covers molds for use in forming cylindrical concrete specimens. The provisions of this specification include the requirements for both reusable and single-use molds.

Note 1-Sizes included are molds having diameters from 2 in. (51 mm) to 36 in. (914 mm). Dimensions of commonly used single-use molds are given in Fig. 1.

1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are for information only.

1.3 The following safety hazards caveat pertains only to the test method described in this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.