1.1 This test method covers the determination of strength of cylindrical concrete specimens derived by means of a cast-in-place mold technique using specimens molded in place in the concrete structural slab at the time the structural slab is cast. This test method is limited to use in slabs where the depth of concrete is from 5 to 12 in. (125 to 300 mm).

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

1.3 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 consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.