Mechanical · M-MXS4F

Standard Metal Roof Deck (20 Ga Min.)

Materials

Steel Timber / Wood Metal (misc.)

Elements

Roofs Ceilings Decks Bracing Insulation Connections / Plates

Connections

Bolted Connection Deck Attachment

About this detail

Mechanical supports and seismic bracing attach to a standard metal roof deck with a minimum twenty gauge thickness, rigid insulation, and finished roofing over cover board. A Unistrut P1000 channel, minimum twenty-four inches long, is secured to the underside of the roof deck using two number fourteen Tek screws at each end. Threaded rods, hanger straps, and seismic cables are anchored to the Unistrut channel using spring stud nuts, washers, and locknuts. Seismic bracing features a three-eighths-inch diameter aircraft cable looped over a wire rope thimble and secured with two U-bolt clips, connected to a pin shackle and an 18-gauge bent plate clip or an Elcen number 207P bridge clevis attached to blocking. Vertical duct supports utilize three-eighths-inch diameter threaded rods with rod couplings and sheet metal hanger straps folded over for double thickness at the channel connection.

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