NFPA Codes and Trench Drain
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Various NFPA codes require surface drainage system components to be made of non-combustible materials. The intent of these codes is to prevent the spread of flame. Since trenches are collection points of flammable liquids and heavier than air vapors, trench drains can spread fire and contribute to smoke development even when empty. All ABT Inc’s Polyester Polymer Concrete products carry the UL 723 Classified mark for Class A fire rating for flame spread and smoke development.
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