Massachusetts Plumbers Journeyman Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Massachusetts Plumbers Journeyman Exam with confidence. Engage with interactive quizzes and challenging questions designed to enhance your knowledge and understanding. Equip yourself before the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

How should horizontal drainage piping that is larger than three inches in diameter be installed in terms of pitch?

1/16 inch per foot
1/8 inch per foot
1/4 inch per foot
1/2 inch per foot

The correct answer is: 1/8 inch per foot

The correct pitch for horizontal drainage piping larger than three inches in diameter is typically 1/8 inch per foot. This pitch ensures that solids can effectively move through the pipes without causing blockages while allowing liquids to drain efficiently. Piping with this slope provides a balance that helps maintain flow velocity, minimizing the risk of waste accumulation. A pitch that is too steep can lead to issues such as the transportation of solids without sufficient liquid, while a pitch that is too shallow may not promote adequate drainage. Therefore, the 1/8 inch per foot pitch is a standard practice in plumbing for larger horizontal drainage pipes to ensure both proper function and efficiency.