MI Plumber study plan

Map the code-adoption and permitting chain in Michigan from plumbing permit application through rough-in and final inspection, listing each inspection stage in order

Define the core drainage terms (fixture unit, building drain, building sewer, branch, stack, developed length) in your own words without referring to notes

Trace a 3-inch building drain from the stack base to the public sewer on paper, labeling slope, cleanout locations, and fittings by type

Calculate the required fall over 20, 40, and 60 feet of horizontal drain at 1/4 inch per foot and at 1/8 inch per foot

Identify which drain fittings are permitted for horizontal-to-vertical and vertical-to-horizontal direction changes

Size a building drain and building sewer from a fixture-unit table for a single-family dwelling and a small commercial restroom group

Determine when a wet vent is permitted and mark three compliant wet-vent layouts on a practice plan

Select the correct fitting for each of eight direction-change scenarios, citing the reason (fixture drain, soil stack, waste stack, horizontal branch)

Locate required cleanouts at the base of stacks, at 100-foot intervals, at aggregate direction changes, and at the building sewer

Explain the restrictions on vertical drops into horizontal drains and the fixture-unit limits for a single horizontal branch

Distinguish vent stack, stack vent, wet vent, common vent, individual vent, and circuit vent by function and by where each terminates

Size vent piping from the fixture-unit vent table for stacks serving up to four branch intervals

Apply the rules for vent terminal height above roof, distance from openings, and termination through a wall versus roof

Design a circuit-vented battery of fixtures on a practice restroom layout and verify the relief vent

Correct five deliberately flawed vent diagrams by identifying the specific code violation in each

Size a water service and meter from fixture units and developed length using a sizing table

Compute pressure loss across meter, fittings, elevation, and friction for a two-story residential supply run

Select the correct backflow protection device for a boiler feed, irrigation connection, and hose bibb application

Lay out hot and cold distribution with a recirculation loop sized for a 60-foot developed run

Convert between fixture units, gallons per minute, and velocity limits when checking a branch for oversizing

State the minimum fixture clearances, rough-in dimensions, and water closet compartment sizes for a residential bathroom group

Verify a fixture installation against accessibility requirements for reach range, knee clearance, and grab bar location

Select the correct trap type, trap arm length, and vent distance for a lavatory, sink, and floor drain

Size and locate a grease interceptor and a clothes-washer standpipe for a small commercial kitchen and laundry

Explain the treatment and venting requirements for special wastes including dental, chemical, and acid waste

Size roof drains, leaders, and storm building drains for a given roof area, rainfall rate, and slope

Convert an isometric plumbing drawing into a plan view and an elevation view with correct pipe sizes carried across

Compute a roof catchment area from building dimensions and apply the rainfall intensity figure to get a design flow

Calculate developed length from an isometric including fittings and elevation changes

Check a submitted layout for drainage slope, vent length, and pipe size errors and list each correction

Execute a trenching and shoring safety checklist and identify confined-space entry requirements for a sewer pit

Select the correct tool and method for cutting and joining ABS, PVC, copper, and PEX, then describe the pressure test for each system

Identify gas piping materials, sizing methods, and the required shutoff, sediment trap, and connector locations for a residential range and water heater

Outline combustion air, venting, and clearance-to-combustible requirements for a Category I appliance

Complete the permit-to-inspection paperwork trail for a gas appliance replacement, including the required tests and sign-offs

Complete three timed 60-question mixed-domain practice exams and score each domain separately

Re-teach your two weakest domains from memory on a blank sheet and check against the code book

Build a one-page quick-reference card of fixture-unit tables, slope rules, and vent distances you will mentally verify before answering

Review every missed question from weeks 1 through 7 and write the correct rule and citation for each