Mechanical · M-92NF6

Seismic Fan and VAV Box Installation Detail

Materials

Elements

Floors / Slabs Bracing Connections / Plates

About this detail

An in-line or variable air volume box is suspended from the overhead structure using a minimum of two 1-inch, 20-gauge sheet metal hanger straps wrapped around the entire unit. The straps attach to the building structure and at all corners of the unit, extending out and up at a forty-five degree minimum angle. Accompanying notes specify seismic requirements for Seismic Category D per SMACNA, IBC, and ASCE 7, including weight and flexibility exemptions.

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