(1)
Galvanized steel or aluminum supply ducts shall conform to Table 9.33.6.5.
(2)
The design of fittings for ducts shall conform to ANSI/SMACNA 006, “HVAC Duct Construction Standards – Metal and Flexible,” except that metal thicknesses shall conform to Table 9.33.6.5.
Table 9.33.6.5. Minimum Metal Thickness of Ducts
Forming Part of Article 9.33.6.5.
