Architectural · A-2JG39

Pipe Penetration Firestop Detail in Concrete Wall

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A minimum five and one-half inch thick normal weight or lightweight concrete or block wall accommodates penetrant openings up to one hundred forty-four square inches with a maximum dimension of twenty-four inches. Up to six pipe penetrations are permitted within the opening, including steel pipe, iron pipe, electrical metallic tubing, copper pipe, copper tubing, or closed-cell foam insulation, with specific size limits per pipe. Mineral wool packed at four pounds per cubic foot is compressed into the annular space to a minimum thickness of three and one-half inches. Fire sealant is applied into the annular space at the wall surface to a minimum depth of one inch, finished flush with the wall surface on both sides.

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