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How often should hard drawn copper Tube be supported for 1 inch and smaller tube and at what intervals for larger sizes?

  1. 6 ft, 7 ft

  2. 8 ft, 10 ft

  3. 10 ft, 12 ft

  4. 12 ft, 14 ft

The correct answer is: 8 ft, 10 ft

The guideline for supporting hard drawn copper tubing is clearly outlined in plumbing codes to ensure safety, functionality, and durability of the piping system. For copper tubes that are 1 inch in diameter or smaller, the support interval is set at 8 feet. This intervals help prevent sagging or bending which could lead to stress and potential failure over time. For larger copper tubes exceeding 1 inch in diameter, a support interval of 10 feet is mandated. This is because larger pipes tend to be heavier and require adequate support to maintain their structural integrity and prevent undue strain on joints and fittings. These support standards are essential for promoting the longevity of the plumbing systems and to mitigate the risks associated with improper installation practices. Knowing these intervals equips someone working in plumbing with the necessary information to adhere to the Illinois Plumbing Code, thus ensuring compliance and enhancing overall system performance.