How To Support Round Ducts On Roof

And this is truly a round duct not an 8 or 12 sided adaptation from rectangular duct.

How to support round ducts on roof.

Hanger and support spacings are greater for round ducts. Made in america with a 20 year warranty. 7 0 72 1 4 to 84 dia. 6 0 60 1 4 to 72 dia.

Your performance is the same as for our other round duct products. 5 0 48 1 4 to 60 dia. It includes hangers wall and ceiling attachment joining material duct attachment etc. This support can meet nearly all height requirements above the roof surface and is approved for seismic and high wind applications.

Round duct size equipment rail length. Up to 12 diameter. Our standard construction uses our spiral duct as the outer shell and a round metal longitudinal seam duct for the inner shell. 3 0 24 1 4 to 36 dia.

Our rooftop duct supports and other roof support systems offer a wide range of options for supporting hvac ductwork supports on top of rubber membrane steel and concrete roofs. Use your leg a workbench or the ground to support the back side of the pipe. Typical round duct hangers. 2 0 12 1 4 to 24 dia.

Use one hand to keep the two edges close and the other to apply downward pressure. 4 0 36 1 4 to 48 dia. Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations. When assembling pipe start at one end and work the seam together like a zipper.

Round spiral ducts are generally 30 percent less weight than equivalent rectangular ducts. Hangers for round ducts. The duct hangers for round ducts shown in figure 2 give an idea of the way in which the ducting is hung from a slab or roof trusses. Sketches as indicated in sans 10173 2003.

Engineered rooftop pipe and duct support systems mechanical unit supports bridge crossovers platforms and more. Assemble the metal ducting like a zipper. Support systems for ductwork may provide restraint in three directions against displacement and rotation. Since gravity is the first force you must design for in a roof support system you can see where a lighter duct will be desirable.

About duct suspension and support systems lindab offers a range of products for hanging circular and rectangular duct systems.