Massachusetts Plumbers Journeyman Practice Exam

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Study for the Massachusetts Plumbers Journeyman Exam. Prepare with multiple choice questions, hints, and detailed explanations. Ace your licensing exam with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the maximum permitted distance from the fixture outlet to the trap weir?

12 inches
18 inches
24 inches
30 inches

The correct answer is: 24 inches

The maximum permitted distance from the fixture outlet to the trap weir is 24 inches. This measurement is critical to ensure that the trap can effectively maintain a seal and prevent sewer gases from entering the living space. When the distance is too great, there is a risk of insufficient water flow allowing the trap to dry out, which can compromise its function. The 24-inch maximum is established to help maintain an efficient drainage system while ensuring that traps are adequately filled and functioning as intended. This specific distance aligns with plumbing codes that are designed to promote proper drainage and sanitation. Keeping the distance within this limit assists in achieving optimal performance in plumbing systems.