1.1 This test method covers procedures for masonry prism construction and testing, and procedures for determining the compressive strength of masonry, fmt , used to determine compliance with the specified compressive strength of masonry, f`m . Note 1-Although this test method is similar in many respects to Test Methods E447, Test Methods E447 requires collection of additional detailed information associated with research tests but not needed for compliance tests. 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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.