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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How should an indirect waste stack receiving discharge from fixtures on two or more floors be extended according to the text?

Horizontally
Downward
Into the sewer system
To the outer air

The correct answer is: To the outer air

The appropriate way to extend an indirect waste stack receiving discharge from fixtures on two or more floors is to direct it to the outer air. This method is crucial because it allows for proper ventilation and prevents the intrusion of sewer gases into the building. An indirect waste system is designed to ensure that any potential contamination that could arise from the fixtures is safely vented away, minimizing health risks and improving air quality within the structure. Directing the waste to the outer air aligns with plumbing codes and safety regulations, ensuring that any potentially harmful vapors or odors do not accumulate in living spaces. This practice also allows for effective drainage and helps maintain the integrity of the plumbing system by preventing backflow or blockages. Adhering to this standard is essential for maintaining a safe and efficient plumbing environment.