Severity Levels

Table 5 lists severity levels for joint spalling. A frayed joint where the concrete has been worn away along the entire joint is rated as low severity.

Table 5 Levels of Severity for Joint Spalling

		Length of Spall
Spall Pieces	Width of Spall	≤0.6 m	>0.6 m
Spall Pieces	Width of Spall	(≤2 ft)	(>2 ft)
Tight: Cannot be easily removed (maybe a few pieces missing)	≤102 mm (≤4 in.)	L	L
	>102 mm (>4 in.)	L	L
Loose: Can be removed and some pieces are missing; if most or all pieces are missing, spall is shallow, less than 25 mm (1 in.)	≤102 mm (≤4 in.)	L	M
	>102 mm (>4 in.)	L	M
Missing: Most or all pieces have been removed	≤102 mm (≤4 in.)	L	M
Missing: Most or all pieces have been removed	>102 mm (>4 in.)	M	H

	L - joint spalling severity is determined by the spall deterioration and length/width matrix described in Table 5. Spalls that have all tight pieces; spalls less than 2 feet long with loose pieces; or spalls less than 2 feet long and less than 4 inches wide with missing pieces are all considered low severity.
	M – joint spalls over 2 feet long with loose or missing pieces or less than 2 feet long and over 4 inches wide with missing pieces are considered medium severity.
	H – joint spalls which have missing pieces, are over 2 feet long and wider than 4 inches are considered high severity.