North Carolina Mechanical Code Complete Practice Exam 2025

Question: 1 / 1485

What material is specified for aluminum dryer ducts?

26 gauge

Aluminum dryer ducts are specified to be constructed using 26 gauge material to ensure a balance between adequate strength and flexibility. This gauge is robust enough to withstand the heat generated by dryer exhaust, helping to prevent potential fire hazards. Additionally, 26 gauge aluminum provides good resistance to deformation, allowing for proper installation without easily bending or collapsing, which is crucial for maintaining airflow efficiency and reducing lint buildup—a significant factor in dryer safety. Using heavier or lighter gauges, like 28, 30, or 32, would either compromise the structural integrity needed for safe operation or not meet building code requirements related to ductwork for dryers.

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28 gauge

30 gauge

32 gauge

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