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AZ ROC C-45 Sheet Metal Practice Questions - Arizona ROC C-45 Sheet Metal Examination Exam

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According to SMACNA HVAC Duct Construction Standards, what is the minimum sheet metal thickness (gauge) required for a 36-inch wide rectangular galvanized steel duct operating at a positive static pressure of 2.0 inches water gauge (in. w.g.) without intermediate transverse reinforcement?
Correct Answer:
24 gauge (0.028 inches)

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