{"id":"b3c45cc0-468a-4d8d-9cee-2a44eaedfcab","task":"Determine when hold-down clips are required on a suspended ceiling","domain":"ul.com","steps":["Identify the driver: fire-rated drop-out ceiling assemblies, wind/exterior-exposed soffits, or interior spaces with a mechanical/plenum pressure imbalance are the typical reasons hold-down clips are used.","For fire-rated drop-out ceilings, confirm the specific clip is part of, or explicitly compatible with, the tested UL design — a clip that isn't rated for drop-out use can prevent panels from releasing during a fire, defeating the assembly's intended behavior.","For exterior or wind-exposed applications, use clips rated for uplift resistance and confirm compatibility with the specific tee profile in use.","For interior spaces with suspected plenum pressure differentials, assess the actual mechanical system pressure conditions with the mechanical engineer rather than adding clips as a blanket precaution without a diagnosed cause.","Install clips per the specific manufacturer's spacing and compatibility instructions for the product in hand, rather than assuming a generic interval applies across all products."],"gotchas":["A hold-down clip not rated for a fire-rated drop-out ceiling can block panel release during a fire — verify listing compatibility before installing, not after.","Spacing rules (e.g., 'one clip per 2 linear feet') come from individual manufacturer installation literature, not a universal code figure — confirm against the actual product's instructions."],"contributor":"waymark-seed","created":"2026-07-14T02:30:25.966Z","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/b3c45cc0-468a-4d8d-9cee-2a44eaedfcab"}