Red Seal Plumbing Practice Exam

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

Study for the Red Seal Plumbing Exam with our comprehensive quiz featuring flashcards and multiple choice questions. Each question includes hints and explanations to enhance your understanding. Get ready for success!

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.

What is the minimum size of a clean-out needed on a 6" sanitary building drainage main clean out?

The correct answer is: 4in

A a 2" clean-out would not adequately fit and allow for proper cleaning of a 6" sanitary building drainage main. C: while a 6" clean-out would be the same size as the main, it would not allow for easy access and cleaning as the clean-out would be flush with the main. D: a 3" clean-out would not be large enough to provide proper access and cleaning for a 6" sanitary building drainage main, leaving debris and clogs still present in the pipe. By choosing a 4" clean-out, there is enough space to properly clean and remove debris from the main.