1.1 This standard incorporates generic terms and generic definitions of terms specifically associated with masonry and masonry units. These generic terms and definitions are used within the standards developed by Committee C12 on Mortars and Grouts for Unit Masonry and Committee C15 on Manufactured Masonry Units.

1.2 This standard incorporates terms and definitions of terms associated with the standards specific to clay masonry units, in particular to Specifications C32, C34, C56, C62, C126, C212, C216, C279, C410, C652, C902, C1088, C1167, C1261, C1272, and C1405, and to Test Methods C67.

1.3 This standard incorporates terms and definitions of terms associated with the standards specific to concrete masonry units in particular to Specifications C55, C73, C90, C129, C139, C744, C1319, C1372, C1491, C1623, and C1634 and to Test Methods C140, C426, and C1262.

1.4 This standard incorporates terms and definition of terms associated with the standards specific to autoclaved aerated concrete masonry units in particular to Practice C1555 and to Specification C1386.

1.5 This standard incorporates terms and definitions of terms associated with the standards specific to clay and concrete roofing tile units in particular to Specifications C1167 and C1492 and to Test Methods C1568, C1569, and C1570.

1.6 For terminology specific to mortar and grout, see Terminology C1180.