Electrical · E-FXDPB

On-Grade Floor Slab Conduit Stub-Up Details

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A PVC-coated rigid metal conduit transitions from an under-slab direct burial, duct bank, or in-slab run up through the top of a concrete floor slab or housekeeping pad. A PVC-coated rigid metal conduit long radius elbow connects the horizontal run to the vertical stub-up, maintaining a minimum 6-inch extension above the finished slab. A sleeve surrounds the vertical conduit penetration through the concrete, sealed with a watertight conduit seal and Underwriters Laboratories-listed sealant. Compacted stable bedding supports the conduit elbow and under-slab runs. The contractor must coordinate all slab penetrations with the structural engineer.

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