Mechanical · M-KNV7R

Condensing Unit Mounting Plate and Concrete Pad Details

Materials

Concrete Steel Timber / Wood Metal (misc.)Gypsum / Drywall

Elements

Decks Anchors / Embeds Connections / Plates

Connections

Deck Attachment Embed Plate

About this detail

Equipment mounting assemblies for condensing units and fans incorporate structural steel plates, concrete pads over metal decks, and stud backing connections. Condensing units are mounted onto a concrete pad over a metal deck using 3/8-inch diameter Hilti KB-TZ anchors with 2-inch embedment. The mounting plate (DSI-2) features sixteen pre-punched mounting holes and secures to wall studs or backing with #12 sheet metal screws at each location. The backing consists of studs spaced at 16 inches on center with 5/8-inch gypsum board, connected using three #8 sheet metal screws per stud backing and extending one stud past each end. A 20-gauge plate is provided per QA notes, and the unit must be installed level.

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