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Sheet and tubular copper and brass for the following uses shall be not less than:
  1. General use - 12 oz. per square foot
  2. Flashing for vent pipes - 8 oz. per square foot
  3. Fixture traps and trap arms - 17 gauge or ASME A112.18.2/CSA B125.2
  4. Fixture tailpieces - 20 gauge or ASME A112.18.2/CSA B125.2
  5. Tailpieces with dishwasher connections - ASME A112.18.2/CSA B125.2
  6. Continuous wastes - 20 gauge or ASME A112.18.2/CSA B125.2

Related Code Sections

3.2.1 Materials, Miscellaneous Materials
Sheet and tubular copper and brass for the following uses shall be not less than: General use - 12 oz. per square foot Flashing for vent pipes - 8 ...