Rhode Island Journeyman Plumber Practice Exam

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Study for the Rhode Island Journeyman Plumber Exam. Prepare with flashcards and multiple choice questions with detailed explanations. Ace your exam!

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What is the minimum trap seal required for each fixture trap?

1 inch
2 inches
3 inches
4 inches

The correct answer is: 2 inches

The minimum trap seal required for each fixture trap is typically set at 2 inches. This measurement ensures that the trap retains enough water to effectively create a barrier against sewer gases and other unpleasant odors. A trap seal that is too shallow may allow these harmful gases to escape into the living space, posing health risks and violating plumbing codes. Additionally, having a 2-inch trap seal balances the need for functionality, as it can accommodate standard fixture drainage without risking drainage issues or trap siphoning. This measurement is a key concept in plumbing standards aimed at safeguarding health and ensuring proper waste management.