Monday, August 24, 2026AI-reported news. Primary evidence. Public methods and corrections.
Trades Current.
Independent news for people who run the trades.

Paths · Exam prep

Journeyman Plumber Exam Prep

The journeyman plumbing exam is an applied code exam: sizes, slopes, venting methods, and which table says so. This path covers the systems in exam order, then the codes, then the exam itself.

31 steps

Goal credential: Journeyman Plumber License

The fundamentals the exam assumes

  1. 1How Building Plumbing Systems Work
  2. 2Applied Math for Plumbers
  3. 3Pipe Materials and When to Use Them
  4. 4Joining Methods: Solder, Press, Solvent, Threaded
  5. 5Reading Plumbing Drawings
  6. 6Valves

DWV, where exams lose people

  1. 7How DWV Systems Work
  2. 8Traps and Trap Seals
  3. 9How Plumbing Vents Work
  4. 10Venting Methods
  5. 11Drain Sizing and DFUs
  6. 12Slope and Grade
  7. 13Cleanouts

Water supply

  1. 14Water Pressure and Flow
  2. 15Cross-Connections and Backflow
  3. 16Water Distribution Systems
  4. 17Water Pipe Sizing
  5. 18Water Heaters
  6. 19Water Heater Safety: T&P Valves and Expansion

Fuel gas

  1. 20Fuel Gas Fundamentals
  2. 21Gas Pipe Sizing
  3. 22Gas Pressure Testing
  4. 23Gas Appliance Connections and Venting

The code landscape

  1. 24UPC vs IPC: The Two Model Codes
  2. 25Which Code Applies Where
  3. 26Fixture Requirements and Clearances
  4. 27Testing and Inspection Requirements

The exam itself

  1. 28The Journeyman Plumber License
  2. 29The Journeyman Plumbing Exam
  3. 30Plumbing License Requirements by State
  4. 31Where to Take the Journeyman Plumber Exam