A maximum 10-inch steel pipe or 4-inch copper pipe passes through a minimum 2-1/2-inch concrete floor with a 0-inch to 2-inch annular space. The annular space is packed with 2 inches of mineral wool packing material and sealed with a minimum 1/2-inch deep SpecSeal LCI sealant. Fire wraps measuring 36 inches high and 12 inches high are installed around the pipe per STI System # F-A-1093 to achieve a 2-hour F and T rating.
STI SYSTEM # F-A-1093 STEEL PIPE THROUGH CONCRETE FLOOR 2 HR. FIRESTOP FOR A MAX. 10" DIA. CONCRETE FLOOR MIN. 2-1/2" 1-1/2" FIRE WRAP 12" H MAX 10" STEEL OR 4" COPPER PIPE 0" TO 2" ANNULAR SPACE. PACKING MATERIAL. MINERAL WOOL 2" DEEP SEALANT 1/2" MIN DEEP SPEC SEAL LCI F RATING=2 HR T RATING=2 HR 1-1/2" FIRE WRAP 36" H PIPE PENETRATION DETAIL - FLOOR 2 5
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