Plumbing Journeyman License

Horizontal drain slopes, building drain sizing, building sewer requirements, fittings for direction changes, and cleanout placement.

Trap purpose, seal depth, trap siphonage, trap arm lengths, trap primers, and prohibited traps.

Vent purpose, sizing, types (wet vent, AAV, combination), vent termination, stack venting, and developed length limits.

Supply pipe materials, sizing methods, water velocity, friction loss, pressure calculations, and pipe support spacing.

Cross-connections, backflow types, air gaps, RPZ assemblies, testing frequency, and hazard classification.

Water heater sizing, T&P relief valves, anti-scald devices, expansion tanks, maximum temperatures, and discharge requirements.

Clothes washer drains, dishwasher connections, grease interceptors, floor drains, and fixture-specific requirements.

DWV water and air tests, supply pressure tests, septic systems, sewage ejectors, gray water, and building subdrains.

WaterSense standards, flow rate limits, corrosion prevention, soldering techniques, solvent welding, and pipe materials.