MN Plumber case studies
MN Plumber · Put your knowledge to work in context.
The Minnesota plumber licensing exam is the state's credentialing test for individuals seeking to work as journeyman or master plumbers. It is designed for plumbing professionals who have completed the required apprenticeship or work experience and want to demonstrate their knowledge of the Minnesota Plumbing Code and safe installation practices. The MN Plumber case studies are 5 cases and about 3,635 words.
1Finishing a Red-Tagged Garage Conversion Without a Valid Permit
You are the master plumber who qualifies a two-person plumbing contractor in Minnesota. Paul homeowner calls about a garage conversion done by the previous owner: a toilet, lavatory, shower, and laundry sink were tied into the 4-inch building drain, and a 2-inch vent was run through the roof, all without a permit.
744 words, about 4 min2Second-Floor Bathroom Branch: Slope, Trap Arm, and Wet Vent in a Tight Ceiling
A general contractor is remodeling a 1950s two-story house in Duluth. The second-floor bathroom is moving to the other side of the house, 24 feet (developed length) from the existing 3-inch cast-iron stack.
763 words, about 4 min3Water Heater Replacement with a Plugged T&P Valve and a Closed System
A homeowner replaces a 40-gallon atmospheric gas water heater with a 50-gallon, 40,000 BTU/h unit in a 6-foot by 6-foot basement closet with an 8-foot ceiling. The closet has louvered bifold doors and no dedicated combustion-air ducts.
711 words, about 4 min4Nightly RPZ Discharge in an Office Building with Multiple Cross-Connections
A 1-1/2-inch domestic water service enters a three-story office building and immediately passes through a reduced-pressure zone (RPZ) backflow assembly at the meter. The basement cafeteria has a carbonated beverage dispenser with a CO2 tank and a booster pump, a 1-inch irrigation line tapped downstream of the RPZ serving 12 pop-up sprinkler heads with a fertilizer injection system, a boiler fill line with chemical treatment, and a mop sink with a threaded hose bibb on the loading dock.
650 words, about 3 min5Sizing a Gas Run for a Shop Heater and Correcting Garage Installation Defects
A 40-foot by 50-foot detached shop has a 100,000 BTU/h suspended furnace, a 40,000 BTU/h water heater, and a new 75,000 BTU/h unit heater. The gas meter is at the front wall and supplies 7 inches water column; the longest run from the meter to the new unit heater is 60 feet.
767 words, about 4 min