CO Plumber study plan

Define the basic plumbing system flow path - service, meter, distribution, fixture supply, drain, vent, building drain - and sketch it from memory

Identify the safety hazards and required PPE for common tasks: soldering, solvent cementing, trenching, and working in confined spaces

Explain the difference between potable water, gray water, and black water, and state the cross-connection risk for each

Calculate simple pipe volume, pressure/head, and fixture-unit counts using the formulas provided in study material

List the hand and power tools used for cutting, reaming, bending, and joining pipe and state one safe-use rule for each

Identify copper, PEX, CPVC, PVC, ABS, cast iron, and galvanized steel by appearance, marking, and typical application

Match each material to its approved joining method and the fittings commonly used with it

Explain water distribution sizing concepts - fixture units, developed length, pressure loss - and work three sample sizing problems

Describe drain/waste/vent sizing and slope requirements and compute slope drop over a given run

Distinguish trap, vent, and cleanout functions and locate them correctly on a sample layout

Demonstrate (or narrate step-by-step) the soldering process for copper, including fluxing, heat control, and leak-check

Sequence the solvent-cementing procedure for PVC and ABS, including primer, cure times, and temperature adjustments

Install or describe correctly three PEX connection types: crimp, clamp, and expansion

Specify hanger and support spacing and required support types for horizontal and vertical runs of each material

Diagnose six common joint failures (cold solder joint, insufficient primer, over-crimped ring, etc.) and state the correction for each

Locate and read the code chapters governing materials, joints, and support, and summarize the approval and prohibitions for each material

Compare a sample installation list against code requirements and mark every non-compliant item with the rule violated

Explain the permit process for piping work: when a permit is required, who may pull it, and what inspections follow

Practice 40 mixed questions on piping systems and materials under timed conditions

Re-teach the three concepts missed most often in your practice set, in writing

Identify the components and installation requirements for water closets, lavatories, sinks, tubs, and shower valves

Explain fixture clearances, minimum fixture counts, and accessible-fixture requirements for a typical dwelling

Describe water heater types (tank, tankless, electric, gas) and their venting, combustion-air, and relief-valve requirements

Trace the function of the T&P relief valve, expansion tank, and drain pan, and state the consequence of each failing

Diagnose five fixture/appliance symptoms (low hot-water volume, sewer odor, running toilet, scald risk, relief-valve discharge) and name the likely cause

Summarize the code requirements for fixture installation, water heater installation, and relief-valve discharge piping

Compare a sample water heater installation scenario against code and list every correction needed

Explain the inspection sequence for a fixture or water heater replacement, from permit to final

Answer 40 mixed fixture/appliance and code questions under timed conditions

Rewrite in your own words the five code provisions you find hardest to remember

Outline the Colorado plumbing licensure structure - apprentice, journeyman, master - and the scope of work allowed at each level

Describe the permit application, inspection request, and final approval workflow for a residential project

List the most commonly cited inspection failures and the code provision behind each

Explain the adopted code edition and how local amendments can differ from the state baseline

Walk through a mock rough-in and final inspection, stating what an inspector checks at each stage

Complete two full-length timed practice exams covering all four domains

Score each exam by domain and rank your three weakest areas

Re-study only the ranked weak areas, using the correction logs from weeks 1-7

Re-drill previously missed questions until each is answered correctly twice

Write a final one-page formula, sizing, and code-number reference sheet from memory