Mechanical · M-6CH9K

Pipe, Duct, Or Conduit Penetration

Materials

insulation

Elements

Decks Floors / Slabs Insulation Roof / Floor Openings

Connections

Expansion / Slip Connection

About this detail

A penetrating pipe, duct, or conduit passes through a structural floor deck with a preferred half-inch perimeter gap maintained to prevent direct contact between the element and the structure. One inch of safing and batt insulation fills the core of the opening. Foam backer rods are installed as required specifically for duct penetrations. The joint is sealed airtight on both sides using acoustical sealant, with non-hardening fire-safing used as an equivalent where required.

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