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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At what rate does thermal expansion typically occur in PVC pipes?

A. 1/4" inch per ten feet length per 100°F temperature change
B. 1/2" inch per ten feet length per 100°F temperature change
C. 3/8" inch per ten feet length per 100°F temperature change
D. 1" inch per ten feet length per 100°F temperature change

The correct answer is: C. 3/8" inch per ten feet length per 100°F temperature change

Thermal expansion in PVC pipes typically occurs at a rate of 3/8" inch per ten feet length per 100°F temperature change. This means that for every 100°F increase or decrease in temperature, a PVC pipe will expand or contract by 3/8" inch for every ten feet of its length. This property is important to consider in plumbing installations to allow for proper spacing and movement of the pipes to prevent damage due to temperature changes. Option A, B, and D are incorrect as they do not reflect the standard rate of thermal expansion for PVC pipes, which is 3/8" inch per ten feet length per 100°F temperature change.