Harmonized Plumbing Level 2 SLE Prep – Block D Drainage Systems (PDF)

Block D: Drainage Systems

Stop guessing on DWV sizing questions.

Drainage is the biggest block in Level 2, and it's where a lot of apprentices lose the most marks. You have to name every pipe correctly before you can size it, the venting tables override each other, and the drawings on the exam are built to catch you out. This block breaks it all down in plain language, written by a working BC plumber and plumbing instructor, then tests you the way the exam will.

What's inside

- 7 lessons: DWV terms and pipe identification, sizing drainage pipes, sizing vents, code requirements and prohibitions, drawings and installation, storm drainage, and testing and drain cleaning. Each one has worked examples and quick-check questions.

- Review quiz: 60 exam-style multiple-choice questions, including isometric drawings where you identify and size the pipes, written to the same standards as trade exam items.

- Full answer key: every question comes with the correct answer, the chapter it comes from, and a one-line explanation of why.

Who it's for: Level 2 plumbing apprentices getting ready for their block exam, or anyone who wants a solid review of DWV and storm sizing before heading back to school.

Study the lesson, take the quiz, and check the key. Then do it again until it sticks.

Independent study resource. Not affiliated with or endorsed by SkilledTradesBC or any training institution.