Question 1
Under the Uniform Plumbing Code (UPC), what is the maximum Drainage Fixture Unit (DFU) capacity for a 4-inch horizontal building drain installed at a slope of 1/4 inch per foot (2% slope)?
Correct Answer:
216 DFU
Question 2
What is the maximum allowable horizontal distance from the trap weir to the vent fitting for a 2-inch fixture trap arm under standard plumbing code provisions?
Correct Answer:
5 feet 0 inches
Question 3
What is the minimum required horizontal slope per foot for drainage piping with a diameter of 2-1/2 inches or smaller?
Correct Answer:
1/4 inch per foot
Question 4
A commercial building drain cleanout is installed on a 4-inch pipe. What minimum clearance must be provided in front of the cleanout opening for rodding and maintenance access?
Correct Answer:
18 inches
Question 5
In a commercial restroom battery, what is the maximum number of floor-outlet water closets or fixtures that can be served by a single circuit vent on a horizontal branch drain?
Correct Answer:
8 fixtures
Question 1
Exam overview

About this Exam

Prepare with the AZ ROC C-37 Plumbing (Commercial) Practice Questions - Arizona ROC C-37 CR-37 Plumbing (Commercial) Examination Exam practice quiz. This question bank includes 100 questions covering commercial, water, installed, minimum, and horizontal. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

More details

Additional Information

AZ ROC C-37 Plumbing (Commercial) Practice Questions - Arizona ROC C-37 CR-37 Plumbing (Commercial) Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on commercial, water, installed, minimum, and horizontal. 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.

Quiz information

Frequently Asked Questions

The complete question count is available after full access is unlocked.
No fixed duration is currently configured for this quiz.
Question explanations are included where they are available in the quiz content, helping you review the reasoning after answering.
Yes. You can retake the practice test again as you continue studying during your available access period.
After your access is confirmed, you can continue into the complete practice exam from this quiz flow.
Unless explicitly stated otherwise, this page provides independent practice material for study and exam preparation and is not the official examination itself.
Keep studying

Related Questions