L – Break is defined by a low-severity crack. A low severity crack is < 13 mm (½ in.), cracks of any width with satisfactory filler; no faulting. The area between the break and the joints is not cracked or may be lightly cracked.

M - Break is defined by a medium-severity crack, or the area between the break and the joints, or both, has a medium crack. A medium-severity crack is a nonfilled crack > 13 mm and < 50 mm (>½  in. and < 2 in.), a nonfilled crack < 50 mm (2 in.) with faulting < 10 mm (3/8 in.), or any filled crack with faulting < 10 mm (3/8 in.).

H – Break is defined by a high-severity crack, or the area between the break and the joints, or both, is highly cracked. A high severity crack is a nonfilled crack >50 mm (2 in.) wide, or any filled or nonfilled crack with faulting >10 mm (3/8 in.).