Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Confirm whether the project's state is among those with a minimum longitudinal joint density requirement (roughly half of states do) and pull that spec's target percentage.
Select an approved joint-construction method for the project (e.g., echelon/tandem paving, edge restraint or pre-compaction devices, infrared joint heaters, cutting wheels, joint adhesives/sealers).
Test joint density separately from mat/lot density using the DOT's specified core or gauge location and protocol at the joint itself.
Calculate the incentive or disincentive pay adjustment using that state's specific per-lineal-foot or per-ton formula.
Document joint construction method and density results as part of the project's QC record.
Known gotchas
Joint density is tested at a location and against a target distinct from mat/lot density (often a lower minimum, e.g., roughly 90.5% for some agencies) — applying the mat-density target to the joint gives a false pass/fail.
Per-lineal-foot incentive caps and pay-factor curves are state-specific (e.g., a documented Wisconsin maximum incentive rate) and don't transfer to a different state's contract.
Most joint-density-improvement techniques (echelon paving, joint heaters, edge restraints) require additional equipment, material, or labor cost that needs to be planned and priced before bidding, not discovered mid-job.
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