Fire performance isn't simply the core; bracket alloys, screw qualities, and finish systems all affect scores

https://www.scribd.com/document/1041762894/Cupolas-with-a-Century-in-Mind-The-Instance-for-Hand-Fabricated-Copper-Craft-224458

Fire efficiency isn't just the core; brace alloys, bolt grades, and surface systems all affect ratings, so settings up are evaluated with each other for real-world compliance.