Mechanical · M-BHZ4F

Round and Rectangular Duct Hangers

Materials

Steel Metal (misc.)

Elements

Bracing Site / Paving

Connections

Bolted Connection

About this detail

Round and rectangular ducts are suspended using various configurations of hanger straps, threaded rods, angles, and collars. Smaller round ducts utilize a one-and-a-half-inch by twelve-gauge split ring collar around the duct secured with a quarter-inch bolt, nut, and star washer or two number ten by five-eighths inch sheet metal screws, supported by a three-eighths-inch diameter rod or one-inch by sixteen-gauge hanger strap with nuts and locknuts. Larger round ducts twenty-five inches and greater employ a one-inch by twenty-gauge continuous collar drawn tight around the duct with adjacent straps, supported by two hanger straps or rods. Rectangular ducts utilize bottom angles, top and bottom angles measuring two inches by two inches by one-eighth inch, and one-inch by twenty-gauge minimum straps over the duct secured with sheet metal screws and trim cut at forty-five degrees. Attachments to overhead structure follow structural engineer requirements and weight limitations, with sway and seismic bracing per SMACNA seismic guidelines.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details