Question 1
Per the International Plumbing Code (IPC) as adopted in Arizona, what is the maximum static water pressure allowed at a plumbing fixture before a pressure reducing valve (PRV) must be installed?
Correct Answer:
80 psi
Question 2
A contractor is calculating total Water Supply Fixture Units (WSFU) for a home containing 1 bathroom group with a tank-flush water closet (2.5 WSFU), a lavatory (1.0 WSFU), a shower (2.0 WSFU), plus 1 kitchen sink (1.5 WSFU). What is the total WSFU load?
Correct Answer:
7.0 WSFU
Question 3
Water is being pumped upward to a fixture location 40 feet above the main supply line elevation. Assuming no pipe friction losses, what is the static pressure drop due to elevation alone?
Correct Answer:
17.32 psi
Question 4
When sizing a water supply service pipe using the standard IPC developed length sizing method, what percentage allowance is standardly added to the measured length of pipe to account for friction loss through fittings and valves if exact fitting losses are not itemized?
Correct Answer:
50 percent
Question 5
Which backflow prevention assembly is required for high-hazard cross-connections subject to continuous backpressure or backsiphonage, and requires an air gap drain discharge line that must never be submerged?
Correct Answer:
Reduced Pressure Principle Backflow Preventer (RPZ)
Question 1
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Prepare with the AZ ROC R-37 Plumbing & Solar Practice Questions - Arizona ROC R-37 Plumbing Including Solar (Residential) Examination Exam practice quiz. This question bank includes 100 questions covering water, solar, horizontal, pressure, and fixture. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AZ ROC R-37 Plumbing & Solar Practice Questions - Arizona ROC R-37 Plumbing Including Solar (Residential) Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on water, solar, horizontal, pressure, and fixture. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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