How To Support Round Ducts On Roof

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.

How to support round ducts on roof.

Made in america with a 20 year warranty. 7 0 72 1 4 to 84 dia. Round spiral ducts are generally 30 percent less weight than equivalent rectangular ducts. Assemble the metal ducting like a zipper.

Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations. About duct suspension and support systems lindab offers a range of products for hanging circular and rectangular duct systems. Optional crossbracing systems specifically designed for high wind applications improve rooftop wind ratings. 3 0 24 1 4 to 36 dia.

6 0 60 1 4 to 72 dia. Engineered rooftop pipe and duct support systems mechanical unit supports bridge crossovers platforms and more. Up to 12 diameter. Your performance is the same as for our other round duct products.

4 0 36 1 4 to 48 dia. 2 0 12 1 4 to 24 dia. Hanger and support spacings are greater for round ducts. Round duct size equipment rail length.

Hangers for round ducts. Support systems for ductwork may provide restraint in three directions against displacement and rotation. Our standard construction uses our spiral duct as the outer shell and a round metal longitudinal seam duct for the inner shell. This support can meet nearly all height requirements above the roof surface and is approved for seismic and high wind applications.

It includes hangers wall and ceiling attachment joining material duct attachment etc. Use your leg a workbench or the ground to support the back side of the pipe. 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. 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.

When assembling pipe start at one end and work the seam together like a zipper. For round ducts larger than 1 600mm diameter the support system must be engineered for the duct mass. 5 0 48 1 4 to 60 dia. Use one hand to keep the two edges close and the other to apply downward pressure.

Typical round duct hangers.