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Distress extent (% of area)
Distress extent (% of area)
FHWA Distress Identification Manual
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Fatigue Cracking
Rutting
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Distress extent (% of area)
FHWA Distress Identification Manual
Units
US customary
SI (metric)
Section
Section length
, ft
Section width
, ft
Distressed area
Low severity area
, ft²
Moderate severity area
, ft²
High severity area
, ft²
Calculate
Example values. Your agency’s specification sets the limits.
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