TM 5-623
H-Joint sealant is in generally poor condition over the entire section, with one or
more of the above types of damage occurring to a severe degree. Sealant
needs immediate replacement (figs B-96 and B-97).
Figure B-96. High-severity joint seal damage.
Figure B-97. High-severity joint seal damage.
How to Count:
Joint seal damage is not counted on a slab-by-slab basis, but rated based on the
overall condition of the sealant over the entire area.
Name of Distress:
Lane/Shoulder Drop Off.
Description:
Lane/shoulder drop off is the difference between the settlement or erosion of the
shoulder and the pavement travel-lane edge. The elevation difference can be
a safety hazard; it can also cause increased water infiltration.
Severity Levels:
L-The difference between the pavement edge and shoulder is 1 to 2 inches (fig B-
98).
M-The difference in elevation is 2 to 4 inches (fig B-99).
B-32
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