Structural · S-3EWRM

Piping and Conduit Penetrations thru Slab or Wall

Elements

Walls Floors / Slabs Reinforcing Roof / Floor Openings

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Concrete slabs or walls pierced by piping and conduit sleeves require specific dimensional clearances and spacing limits. The maximum sleeve diameter is restricted to one-third of the slab thickness or two inches, whichever is smaller, with additional restrictions applied for post-tensioned slabs. Clear distances between adjacent sleeves must maintain a minimum spacing of three times the sleeve diameter or four inches, whichever is greater. When required clear distances between multiple sleeves cannot be achieved, the congested area must be treated and reinforced as a structural opening.

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