Massachusetts Plumbers Journeyman Practice Exam

When connecting three or more fittings together, how often should a hanger be placed based on the standard?

1. A. One hanger per fitting

2. B. One hanger every six feet

3. C. One hanger for every three feet or part thereof

4. D. No hanger required

The correct answer is: C. One hanger for every three feet or part thereof

The correct response states that a hanger should be placed one for every three feet or part thereof when connecting three or more fittings together. This guideline is based on industry standards which ensure that the piping system is adequately supported, preventing excessive sagging and potential damage over time. Proper support is critical in plumbing installations, as it helps to maintain the integrity of the piping system and allows for ease of maintenance. By having a hanger every three feet or part thereof, you ensure that the fittings remain secure, aligned, and functional under various conditions, such as temperature changes and pressure fluctuations. The other choices do not conform to commonly accepted practices for plumbing installations. For instance, stating one hanger per fitting may lead to inadequate support if the fittings are spaced far apart. Suggesting one hanger every six feet could potentially allow for excessive movement or sagging of the pipes. Lastly, claiming that no hanger is required ignores the need for structural stability in plumbing systems.