NH Journeyman Plumber study plan

Build a one-page sizing worksheet for a residential DWV system that traces a 3-inch building drain from fixture to stack and labels every trap arm, branch interval, and vent connection

Calculate developed length for a horizontal branch and a vent using the 1/4-inch-per-foot slope rule, then verify the fall over the run in inches

Explain in writing the difference between a wet vent, a common vent, and an individual vent, and where each is permitted

Work 15 practice problems on trap arm length, slope, and fixture unit values, logging each miss with the code section that resolves it

Size a vent stack and a building drain using fixture unit tables for a two-bath dwelling and a small commercial restroom

Diagram a storm drainage system for a flat roof, showing roof drain sizing, leader sizing, and the difference between combined and separate storm systems

Identify the conditions that require a backwater valve, an air admittance valve, or a cleanout, and state the spacing and access rules for each

Solve 15 practice questions on venting and drainage, and rework every missed question until you can explain the correct answer without notes

Size a water service and distribution main for a single-family home using demand-load and fixture-unit methods, and state the assumed pressure at the meter

Calculate pressure loss through a given length of pipe at a stated flow rate, and identify how elevation change affects residual pressure

Describe the purpose and placement of a pressure-reducing valve, a thermal expansion tank, and a backflow preventer in a residential system

Complete 15 practice problems on pipe sizing and pressure, correcting each error against a sizing table

Match each common fixture (water closet, lavatory, sink, shower, floor drain) to its trap size, fixture-unit value, and minimum trap-to-vent distance

Explain the installation requirements for a water heater, including temperature and pressure relief valve discharge, drain pan sizing, and expansion control

Compare tank and tankless water heaters on venting category, combustion air, and clearance requirements, and state when each applies

Answer 20 practice questions on fixtures and water heaters, then rewrite any missed item as a short rule you can recall

Size a natural gas branch line for a range and a water heater using the longest-length and BTU tables, and show the pipe size at each segment

List the requirements for gas piping support, protection, shutoff valves, and sediment traps, and identify where each is required

Describe combustion air requirements for an appliance in a confined space and calculate the required free area for two openings

Complete 15 practice problems on gas sizing and appliance venting, citing the table or rule used for each answer

Map the structure of the New Hampshire plumbing statutes and administrative rules: licensing, permitting, inspection, and enforcement authority

List the adoption and amendment points where the New Hampshire code differs from the model code, and note the practical effect of each

Explain the permit and inspection sequence for a residential remodel and for a new commercial buildout, including who may perform the work

Answer 20 practice questions on New Hampshire law and rules, and flag any item you cannot verify against the statute or rule text

Re-solve the three sizing sheets from weeks 1 through 3 from memory, then compare against the originals and correct discrepancies

Work a 40-question mixed set weighted toward drainage, venting, and water supply, and score it under timed conditions

Build a personal error list of the ten most repeated mistakes and write the correcting rule for each

Rehearse the code-section lookup path for the five topics you miss most often, timing each lookup

Take two full-length timed practice exams that mirror the domain weighting of the real exam and score each

Review every missed question and confirm the correct answer against the code text before moving on

Drill the New Hampshire-specific rules and the fixture and water heater card until recall is immediate

Write a one-page exam-day plan covering pacing per question, when to flag and skip, and how to handle calculation questions