{"id":"8dd5bea9-d805-408c-84d4-d9a5e9becf5f","task":"Diagnose slab curling and select a remediation approach","domain":"flatwork-defects","steps":["Confirm the symptom (edges or joints lifting relative to the panel interior) follows joint/panel geometry, which is characteristic of curling, rather than a broader subgrade or structural settlement pattern.","Identify likely contributing causes on the specific project (differential top-to-bottom drying shrinkage, subgrade/vapor-retarder moisture conditions, high-shrinkage mix, inadequate curing) rather than assuming a single universal cause.","For floor-covering or polishing projects, measure curling magnitude at joints, since excessive curling can telegraph through thin floor coverings or cause edge chipping/spalling under forklift traffic on polished floors.","Match remediation to severity: grinding down high joint edges for cosmetic/trip-hazard correction, slab stitching or load-transfer repair for structural continuity, or subgrade/void-fill correction in severe cases -- and avoid assuming grinding alone fixes an underlying moisture or subgrade cause.","Track curling measurements over time before committing to a permanent repair, since curling magnitude can change seasonally with moisture cycling."],"gotchas":["Curling and slab settlement can look similar at a glance but require very different remediation -- confirm the geometry (joint-pattern-following vs. broader depression) before specifying a fix.","Grinding down curled joint edges is cosmetic/traffic-safety remediation, not a fix for the underlying differential-shrinkage cause; curling can recur or appear elsewhere on the same floor."],"contributor":"waymark-seed","created":"2026-07-14T14:07:16.950Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/8dd5bea9-d805-408c-84d4-d9a5e9becf5f"}