🚰 Bluegrass Plumb Line · KRS 318 · 815 KAR Chapter 20

Kentucky plumbing
exam prep that cites
Kentucky law.

The journeyman and master plumber exams in Kentucky are not generic code tests. They lean on KRS Chapter 318 and the Kentucky State Plumbing Code in 815 KAR Chapter 20 — and on a practical portion that national courses barely mention. This bench drills all of it.

360+plumbing questions
134flashcards
5sizing exercises
12wkstudy plan
What is on the exam

Three things trip people up

Kentucky-specific law

Licensing classes, apprentice ratios, permits, inspections, and the administrative rules that live in KRS 318 and 815 KAR 20. A national question bank simply does not have these, and they are free points if you have seen them before.

The drawing portion

Isometric riser diagrams, fixture-unit loading, developed length, vent sizing. We drill the sizing tables the same way the exam asks — per 815 KAR 20:120 for water distribution and the DFU tables for drainage.

The practical

A caulked lead-and-oakum joint and a copper offset made with 45° ells. The single most common failure is cutting the pieces wrong — so we teach the takeoff method and drill offset multipliers until they are reflex.

Exam format, fees, and application deadlines are set by the Kentucky Department of Housing, Buildings and Construction — confirm the current details with the Division of Plumbing before you apply. Applications generally need to be in Frankfort well ahead of the exam date, so start that paperwork early.
Inside the bench

Everything you need in one browser tab

  • 360+ questions with a written explanation and a code or statute citation on every one
  • Scenario questions — the applied, “here is a job, now size it” kind, not just recall
  • Timed exam simulators at 20, 40, and 60 questions, with a pass line on your score trend
  • Printable paper practice exams with a separate answer key — for the kitchen table
  • Offset Trainer — endless generated problems across 22½°, 30°, 45°, and 60° offsets
  • Five sizing exercises including water distribution per 815 KAR 20:120
  • 134 flashcards with a listen mode that reads them to you while you drive
  • Number Race — a timed drill on the numbers you have to know cold
  • Miss deck and weakest-topic tracker so you study the gap, not the comfort zone
  • Printable cheat sheets — 13 cards covering the values that show up again and again
A taste

What a question looks like

A 3-inch horizontal drain line serves a battery of fixtures. Which slope satisfies the minimum grade requirement?

  • ⅛ inch per foot
  • ¼ inch per foot
  • ½ inch per foot
  • 1 inch per foot

Why: Drain lines 3 inches and smaller require a minimum of ¼ inch per foot of fall. The ⅛-inch minimum applies to larger diameters. Every question in the bank carries this kind of explanation, so a wrong answer teaches you something instead of just costing a point.

Plans

Plumbing access

Every plan opens the whole plumbing bench. No locked questions.

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Questions

Journeyman or master — which does this cover?

Both. The bank spans the shared technical ground and the additional law, business, and supervision material the master exam adds. You can drill by category, so if you are only sitting the journeyman you can weight your time accordingly.

Do I need the Kentucky code book?

Yes, and you should order it early. Our cheat sheets and study guide are aids for memorizing structure and numbers; the adopted code is what governs. Knowing where things live in your own book is worth real points.

How much time should I give it?

The built-in plan runs twelve weeks at roughly three to five hours a week, front-loaded on law and sizing. If your date is closer than that, the plan compresses and the readiness gauge will tell you honestly where you stand.

Does the practical prep replace hands-on practice?

No. Pour lead and cut copper with your own hands. What we do is make sure your measurements are right — the takeoff math, the offset multipliers, and the sequence — because that is where most people lose the practical.

Not sitting the exam yet?

Leave an email and we will let you know when the plumbing bank gets a significant update or Kentucky adopts a new code edition.