A pipe penetrates an ACP ceiling system maintaining one inch of clearance around the penetration and the line of the runner beyond. An escutcheon with a one and a half inch flange is installed typically at the ceiling line. Oversized holes are not required at sprinkler heads with flexible fittings.
PIPE PENETRATION ACP CEILING SYSTEM LINE OF RUNNER BEYOND 1" 1" ESCUTCHEON WITH 1-1/2" FLANGE TYP 1 1/2" OVERSIZED HOLE NOT REQ @ SPRINKER HEADS W/ FLEXIBLE FITTINGS
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