TRCS Portal 2025

Inspection Guidelines

OverviewAC Distress MeasurementPCC Distress Measurement
BlowupCorner BreakCracks - Longitudinal, Transverse, and DiagonalDurability - D CrackingJoint Seal DamagePatching - Small (Less Than 5 Sq Ft - 0.5 Sq M)Patching - Large (Over 5 Sq Ft - 0.5 Sq M)and Utility CutPopoutsPumpingScalingSettlement or FaultingShattered Slab - Intersecting CracksShrinkage CracksSpalling - Trans. And Long. JointsSpalling - CornerAlkali Silica Reaction (ASR)

Cracks - Longitudinal, Transverse, and Diagonal

These cracks, which divide the slab into two or three pieces, are usually caused by a combination of load repetition, curling stresses, and shrinkage stresses. (For slabs divided into four or more pieces, see Shattered Slab/Intersecting Cracks.) Low-severity cracks are usually warping- or friction-related and are not considered major structural distresses. Medium- or high-severity cracks are usually working cracks and are considered major structural distresses.

How to Count

Once the severity has been identified, the distress is recorded as one slab. If a crack is repaired by a narrow patch (e.g., 4 to 10 inches wide (100 to 250 millimeters)), only the crack and not the patch should be recorded at the appropriate severity level.

SeverityDistress ExampleDescription
Low
Crack has no spalling or minor spalling (no FOD potential). If non-filled, it is less than 3 millimeters (1/8 inch) wide; a filled crack can be of any width, but its filler material must be in satisfactory condition.
Medium
One of the following conditions exists: (1) a filled or non-filled crack is moderately spalled (some FOD potential); (2) a non-filled crack has a mean width between 1/8 inch (3 millimeters) and 1 inch (25 millimeters); (3) a filled crack has no spalling or minor spalling, but the filler is in unsatisfactory condition; or (4) the slab is divided into three pieces by two or more cracks.
High
One of the following conditions exists: (1) a filled or non-filled crack is severely spalled (definite FOD potential); (2) a non-filled crack has a mean width approximately greater than 1 inch (25 millimeters), creating tire damage potential, or (3) the slab is divided into three pieces by two or more cracks, one of which is at least medium severity.