NV Journeyman Plumber study plan

Define the terms slope, fall, crown, invert, grade, developed length, and fixture unit, and state where each appears in a drainage design calculation.

Compute pipe slope from rise and run in both percent and inches per foot, and convert between the two for at least ten practice pairs.

Identify the maximum allowable trap-to-vent distance and the horizontal drain slope requirements by pipe size, and record them in a one-page reference sheet.

Trace a soil stack from fixture to building drain and label every fitting, cleanout, and transition on a hand sketch.

Size a horizontal branch and a building drain using fixture units, and justify each step of the table lookup.

Explain the difference between a trap arm, a vent stack, a stack vent, and a yoke vent, and sketch where each is permitted.

Determine vent sizing for a given stack and fixture load, and identify at least three prohibited vent configurations.

Compare the trap seal requirements, vent distance limits, and prohibited trap types for sinks, floor drains, and lavatories.

Size water service and distribution piping from fixture units and pressure loss, and state the assumed residual pressure at each step.

Calculate developed length including fittings and elevation, and explain how each affects pipe sizing.

Identify the conditions that create a cross-connection and list at least five backflow prevention assemblies or devices with their approved applications.

Explain the difference between backpressure and backsiphonage, and select the correct protection for each of five described scenarios.

Describe the required testing and inspection intervals for a reduced-pressure principle assembly.

State the clearance, relief valve, and drain pan requirements for a residential water heater and explain the consequence of each omission.

Match fixture types to their minimum trap size, water supply requirements, and required clearances.

Explain thermal expansion, temperature and pressure relief discharge termination, and the approved piping material for the relief line.

Verify water heater venting and combustion air requirements against the installation instructions for one common appliance type.

Size a natural gas branch line from appliance input ratings and length, and state the assumed pressure drop and specific gravity.

Explain the bonding, clearance, and prohibited location requirements for gas piping, and identify at least four prohibited installations.

Describe the sequence of a rough-in inspection and a final inspection, and list what an inspector typically verifies at each stage.

Identify when a permit is required and when it is not, and describe the consequences of working without one.

Summarize the licensing structure for plumbers in Nevada, including the classifications, renewal cycle, and continuing education obligation, and cite the governing authority for each.

Explain the role of the state contractors board versus the local jurisdiction for permits and inspections in a Nevada project.

List the required safety practices for confined space entry, trenching and shoring, and soldering or brazing with open flame.

Select the correct tool and safety precaution for five described field tasks, and state one common misuse for each.

Read a plumbing isometric and identify the drainage, vent, and water lines by symbol and line weight.

Convert an isometric into a material takeoff listing pipe, fittings, and fixtures with quantities and sizes.

Describe the purpose and sizing approach for grease interceptors, sand traps, and oil separators, and identify which wastes require each.

Explain the venting and cleaning requirements for interceptors and the restrictions on discharging special wastes to the sanitary system.

Complete a full-length timed practice exam under exam conditions and score it by domain.

Review every missed question and write the governing rule or calculation in your own words.

Re-drill the two lowest-scoring domains until each reaches your target accuracy.

Recite the key code thresholds, clearances, and licensing facts from memory without notes.