HVAC DUCT GAUGE SELECTION
HVAC DUCT GAUGE SELECTION
(OP)
Hi guys,
I need some help here. I have the SMACNA HVAC duct construction standards book open in front of me. I am designing a 72" X 43" supply duct with a 3" in. wg static pressure and 29400 CFM. I would like to determine the appropriate sheet metal gauge to use for this application but I am not really sure what to do Table 1-6 in the booklet does not have anything beyond circular diameter of 24". Any guidance would be appreciated.
I need some help here. I have the SMACNA HVAC duct construction standards book open in front of me. I am designing a 72" X 43" supply duct with a 3" in. wg static pressure and 29400 CFM. I would like to determine the appropriate sheet metal gauge to use for this application but I am not really sure what to do Table 1-6 in the booklet does not have anything beyond circular diameter of 24". Any guidance would be appreciated.





RE: HVAC DUCT GAUGE SELECTION
i don't have whole smacna book, but i do have table excerpts, and in some of my tables 28" is smallest dimension, while largest one is " over 96" "
be sure to make difference between true circular ducts and equivalent diameters of rectangular ducts, as the tables are not interchangeable, stiffness and construction are different.
RE: HVAC DUCT GAUGE SELECTION
RE: HVAC DUCT GAUGE SELECTION