How To Support Round Ducts On Roof

Hanger and support spacings are greater for round ducts.

How to support round ducts on roof.

Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations. Round duct size equipment rail length. When assembling pipe start at one end and work the seam together like a zipper. About duct suspension and support systems lindab offers a range of products for hanging circular and rectangular duct systems.

Made in america with a 20 year warranty. Our standard construction uses our spiral duct as the outer shell and a round metal longitudinal seam duct for the inner shell. Optional crossbracing systems specifically designed for high wind applications improve rooftop wind ratings. And this is truly a round duct not an 8 or 12 sided adaptation from rectangular duct.

Up to 12 diameter. Typical round duct hangers. 7 0 72 1 4 to 84 dia. Support systems for ductwork may provide restraint in three directions against displacement and rotation.

Round spiral ducts are generally 30 percent less weight than equivalent rectangular ducts. 6 0 60 1 4 to 72 dia. Use your leg a workbench or the ground to support the back side of the pipe. This support can meet nearly all height requirements above the roof surface and is approved for seismic and high wind applications.

Sketches as indicated in sans 10173 2003. 4 0 36 1 4 to 48 dia. Hangers for round ducts. 5 0 48 1 4 to 60 dia.

Use one hand to keep the two edges close and the other to apply downward pressure. 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. It includes hangers wall and ceiling attachment joining material duct attachment etc. For round ducts larger than 1 600mm diameter the support system must be engineered for the duct mass.

2 0 12 1 4 to 24 dia. 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. 3 0 24 1 4 to 36 dia.

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