A four-inch inner diameter rigid galvanized steel conduit passes through a five-inch inner diameter rigid galvanized steel sleeve embedded in a finished concrete floor slab. Firestop material fills the annular space between the conduit and the sleeve. The sleeve extends one inch above the slab surface and is secured with typical four concrete anchors.
SECTION A A 4" ID RGS CONDUIT FIRESTOP MATERIAL 5" ID RGS SLEEVE FIRESTOP MATERIAL 5" ID RGS SLEEVE TYP. FOUR CONCRETE ANCHORS FINISHED CONCRETE FLOOR SLAB 1" ABOVE SLAB 4" ID RGS CONDUIT
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