Question: Structural steel is often treated with a protective coating (called an intumescent coating) that insulates steel against damage from fire. Coatings are rated according to
Structural steel is often treated with a protective coating (called an intumescent coating) that insulates steel against damage from fire. Coatings are rated according to the number of hours of high-temperature exposure the treated steel can withstand, but if the coating is not applied with a mean thickness with the range specified by its manufacturer, the protection it provides will last for a shorter time than its rating
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