Plumbing · P-P4FV7

Pipe Penetration through Floor Slab

Materials

Elements

Stairs Floors / Slabs Insulation Roof / Floor Openings

About this detail

A vertical pipe passes through a core-drilled or knock-out sleeve hole in a concrete floor slab. The annular space is sealed with backing material and sealant at the top and bottom of the penetration. Where fire-rated assemblies occur, a firestopping system comprising sealant, backing material, and insulation is applied to meet the required rating. For uninsulated piping, a riser clamp rests on the top of the slab where applicable. Insulated piping maintains continuous insulation through the penetration assembly.

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