WI Plumber study guide
WI Plumber · Work through your exam, one topic at a time.
Plumbing credentials in Wisconsin are issued by the Department of Safety and Professional Services (DSPS). The DSPS professions list includes several plumbing-related credentials, among them Journeyman Plumber, Master Plumber, Plumbing Apprentice, Journeyman Plumber Restricted Appliance, Journeyman Plumber Restricted Service, Master Plumber Restricted Appliance, Master Plumber Restricted Service, Plumbing Learner Restricted Appliance, Plumbing Learner Restricted Service, Pipelayer, Commercial Plumbing Inspector, and UDC Plumbing Inspector. The WI Plumber study guide has 5 sections and about 1,848 words.
01General Plumbing Knowledge and Safety
Domain 1 covers the fundamentals every other domain assumes: how water comes in and waste goes out, which pipe materials are approved for which service, how joints are made, how systems are tested, and how to work without injuring yourself or the occupant. Materials and joining.
370 words, about 2 min02Water Supply and Distribution Systems
The water supply domain tests three linked skills: sizing, pressure, and protection of the potable supply. Add the water supply fixture units (WSFU) for every fixture served (a tank-type water closet is commonly 2.5, a lavatory 1, a bathtub or shower 2; confirm against the table in your code book).
362 words, about 2 min03Drain, Waste, and Vent Systems
DWV questions reward understanding the why: every rule exists to keep the trap seal, 2 to 4 inches of water, intact. Horizontal drainage runs at 1/4 in per foot for 2 in and smaller, and 1/8 in per foot for 3 in and larger.
398 words, about 2 min04Fixtures, Fixture Fittings, and Appliances
This domain asks three questions about every item: which fixture, installed how, and protected how? Water closets and flush systems.
340 words, about 2 min05Plumbing Code, Permits, and Administration
Every other domain assumes you can find the rule. This domain tests whether you know who enforces it and how work gets approved.
378 words, about 2 min