MD Plumber study plan

List the four exam domains and write, from memory, the weight each carries so you can allocate remaining study time.

Define the core hydraulic and materials vocabulary of general plumbing: head pressure, fixture unit, developed length, slope, trap seal, air gap, and backflow.

Locate the current Maryland plumbing regulations and the adopted model code edition, and record how amendments are published and where local jurisdictions post their own amendments.

Tabulate pipe materials (copper types K/L/M, PEX, CPVC, PVC, cast iron, galvanized steel) with their typical supply or drainage use and the joining method for each.

Solve ten unit-conversion and pressure/head problems (psi to feet of head, slope as percent versus inches per foot) without a reference.

Explain how fixture units convert to probable demand and how drainage fixture units size a building drain, in your own words.

Describe the purpose and operation of the venting system: individual, common, wet, circuit, and stack vents, plus air admittance valves and where Maryland restricts them.

Outline the permit and inspection sequence for a residential plumbing alteration in Maryland, from application through final inspection.

Identify which work a Maryland-licensed master plumber must supervise versus what a licensed journeyman may perform independently.

Work twenty practice items on pipe sizing, slope, and venting, and log every miss with the reason it was missed.

Diagram a complete water supply system from meter or well through backflow protection, distribution, and fixture branches, labeling shutoffs and valves.

Calculate minimum pipe size for a small dwelling using fixture units and a demand table, showing each step.

Describe thermal expansion control, water hammer arrestors, and pressure-reducing valve placement and settings.

Compare direct, hydro-pneumatic, and gravity water supply arrangements and state where each is appropriate.

Draw the drainage path for a two-story house including stack, building drain, and building sewer, marking cleanout locations.

Size and slope a building drain and sewer for a given fixture-unit load, and state the minimum and maximum slope rules and why each exists.

Explain trap arm length limits, trap seal depth, and the conditions that cause siphonage or backpressure.

Describe indirect waste, air gaps, and backflow prevention assemblies, and match each to a scenario such as a boiler drain or a mop sink.

Identify the storm drainage requirements Maryland applies and how they differ from sanitary drainage rules.

Answer twenty drainage and venting practice questions under a 25-minute timer.

Specify water closets, lavatories, sinks, bathtubs, showers, and floor drains by their rough-in dimensions, trap requirements, and supply connections.

Explain the installation requirements for water heaters: relief valve discharge, drain pan, seismic or support strapping, and venting of gas units.

Describe fixture clearance and accessibility requirements for a residential bathroom, including a lavatory, water closet, and tub or shower.

Trace the drainage and supply connections for a washing machine, dishwasher, and garbage disposal, noting air gap and backflow needs.

List common fixture installation defects an inspector would flag and the code basis for each.

Describe the testing and inspection requirements for new drainage and water supply systems before concealment.

Explain the requirements for special fixtures and equipment: drinking fountains, commercial sinks, grease interceptors, and hose bibbs.

Match Maryland-specific licensing, insurance, and continuing-education obligations to the master plumber role.

Identify the code provisions most often tested on Maryland exams by reviewing your miss log from weeks 1 through 5.

Practice ten scenario questions that combine a fixture with a code requirement and justify each answer in writing.

Complete a full-length timed practice exam and record the score by domain.

Re-study the two lowest-scoring domains using targeted drills rather than full review.

Re-derive from memory the sizing, slope, and venting rules you missed, and check each against the code.

Build a flashcard set of at least forty facts drawn only from your miss log.

Explain aloud, without notes, the permit and inspection process and the drainage sizing method.

Clear the remediation list from week 7 and re-test each item until you answer correctly twice in a row.

Take two more timed practice exams and compare domain scores to week 7 to confirm improvement.

Review the reference sheet, fixture table, and riser diagram, correcting anything you now know is wrong.

Rehearse exam logistics: allowed references, time per question, and a strategy for flagging and returning to hard items.

Write a short final self-assessment naming your remaining risks and the three facts you must confirm before test day.