How To Support Round Ducts On Roof

Your performance is the same as for our other round duct products.

How to support round ducts on roof.

Typical round duct hangers. Made in america with a 20 year warranty. 6 0 60 1 4 to 72 dia. Hangers for round ducts.

Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations. Assemble the metal ducting like a zipper. Optional crossbracing systems specifically designed for high wind applications improve rooftop wind ratings. About duct suspension and support systems lindab offers a range of products for hanging circular and rectangular duct systems.

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. Engineered rooftop pipe and duct support systems mechanical unit supports bridge crossovers platforms and more. Hanger and support spacings are greater for round ducts. 7 0 72 1 4 to 84 dia.

When assembling pipe start at one end and work the seam together like a zipper. 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. 3 0 24 1 4 to 36 dia. Round spiral ducts are generally 30 percent less weight than equivalent rectangular ducts.

5 0 48 1 4 to 60 dia. Our standard construction uses our spiral duct as the outer shell and a round metal longitudinal seam duct for the inner shell. It includes hangers wall and ceiling attachment joining material duct attachment etc. 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.

Support systems for ductwork may provide restraint in three directions against displacement and rotation. Use your leg a workbench or the ground to support the back side of the pipe. 4 0 36 1 4 to 48 dia. And this is truly a round duct not an 8 or 12 sided adaptation from rectangular duct.

The php d duct support leverages a goal post design with a single crossbar below the duct to support all sizes of square or round ducting cable trays and piping. Up to 12 diameter. Round duct size equipment rail length. For round ducts larger than 1 600mm diameter the support system must be engineered for the duct mass.

This support can meet nearly all height requirements above the roof surface and is approved for seismic and high wind applications.