1.1 This practice covers the preparation of rock slabs for various tests used to evaluate any visual internal defects, or the durability of rock by means of laboratory tests. These tests include, but are not limited to, Test Methods D 5240, D 5312, and D 5313. 1.2 UnitsThe values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.1.3 All observed and measured values shall conform to the guidelines for signifi