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!

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What should be the minimum width of an exposed surface on each side of a wiped joint?

¾ inch
1 inch
1 ½ inches
2 inches

The correct answer is: ¾ inch

The correct minimum width for an exposed surface on each side of a wiped joint is generally set at 1 inch. This measurement is crucial because it provides sufficient surface area for the joint to bond effectively, ensuring durability and reducing the risk of leaks. A wider exposed surface can help accommodate the thermal expansion and contraction of pipes, which is vital in maintaining the integrity of the plumbing system over time. While a width of ¾ inch may seem minimal, it does not meet the standard practices for establishing a secure and reliable wiped joint. A 1-inch width strikes a balance between adequacy for bonding and practical considerations in installation. In plumbing, adhering to these standards helps ensure compliance with codes and assists in preventing future issues.