15 March 2001
DISTRESS 72, SHATTERED SLAB/INTERSECTING CRACKS
14.1. Description. Intersecting cracks are cracks that break into four or more pieces because of
overloading and/or inadequate support. The high-severity level of this distress type, as defined
below, is referred to as a shattered slab. If all pieces or cracks are contained within a corner
break, the distress is categorized as a severe corner break. Deduct curves for shattered
slabs/intersecting cracks are shown in Figure 14.1.
14.2. Severity Levels.
14.2.1. L. Slab is broken into four or five pieces with the vast majority of the cracks (over
85 percent) of low severity (Figures 14.2. and 14.3.).
14.2.2. M. (1) Slab is broken into four or five pieces with over 15 percent of the cracks of
medium severity (no high-severity cracks); or (2) slab is broken into six or more pieces with over
85 percent of the cracks of low severity (Figures 14.4. and 14.5.).
14.2.3. H. At this level of severity, the slab is called shattered: (1) slab is broken into four or
five pieces with some or all of the cracks of high severity; (2) slab is broken into six or more
pieces with over 15 percent of the cracks of medium or high severity (Figure 14.6.).
14.3. How to Count.
No other distress such
as scaling, spalling,
or durability cracking should
recorded if the slab is medium- or high-severity level, since the severity of this distress would
affect the slab's rating substantially.