While discussing safety requirements for a new facility I noticed the plans mentioned “EI 120.” I’d seen other ratings before, but this one caught my attention because it seemed to imply a higher level of protection. It made me wonder how to properly interpret that kind of marking in real building projects
The ei 120 fire rating is essentially a way of showing that a construction element is designed to provide both integrity and insulation for a defined period. It highlights that the barrier isn’t only about stopping flames but also about controlling heat transfer. In practice, it represents a more advanced level of protection that’s typically used where higher safety standards are necessary
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