Clearance requirements for a pipe penetrating one-hour and two-hour fire-rated partitions. Dimensions indicate a pipe size of one and one-quarter inches minimum with clearances ranging from one-half to one inch for the two-hour fire-rated partition, and zero to seven-eighths inches for the one-hour fire-rated partition.
1/2" - 1" ( 1 1/4" PIPE MIN) 1 HOUR FIRE-RATED PARTITION 2 HOUR FIRE-RATED PARTITION 1 1/4" 0" - 7/8" (1 1/4" PIPE MAX)
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