Architectural · A-B45KB

Partition Penetration Detail

Materials

Elements

Walls Partitions Ceilings Floors / Slabs Connections / Plates Roof / Floor Openings

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Utility penetrations through acoustical partitions require specific clearance and sealing to maintain sound isolation. Conduits, cables, and pipes are installed with a one-eighth inch typical clearance from the wall to prevent direct contact, sealed with acoustical sealant, caulking compound, closed-cell polyurethane foam, or fire-rated silicone foam. Any gap larger than one-half inch must be covered with gypsum board, lapped a minimum of two inches, and screwed prior to applying the acoustical sealant. Conduit sleeves are utilized for multiple cables, maintaining a one-half inch clearance with the surrounding construction. Cable trays are prohibited from penetrating slab-to-slab partitions directly.

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