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The UT-JP exam has 100 questions and runs 4 hours.
These 10 free UT-JP questions are organized by exam domain, so you can see how each part of the Utah Journeyman Plumber License Exam blueprint is tested. Reveal the answer and explanation under each question.
A small process-water bypass needs frequent manual adjustment over a range of flows. A gate valve left partly open has developed chatter and seat damage. All replacement choices are rated for the water temperature and pressure. Which valve design is intended for this throttling duty?
Correct answer: D - A globe valve with a regulating disc
A sink has a 2-inch trap arm with a 7-foot developed length and a uniform total fall of 3 inches before a dry vent rises vertically from the drain’s crown. The installer points out that the run is shorter than the 8-foot distance listed for a 2-inch trap arm in the 2024 IPC. Which revision corrects the venting defect?
Correct answer: A - Move the vent takeoff upstream, where total fall from the trap is 1½ inches
Size the common gas segment serving a furnace rated 110,000 Btu/h input and 88,000 Btu/h output, plus a water heater rated 40,000 Btu/h input. Natural gas has a heating value of 1,000 Btu/ft³. The longest-length method applies; the design length to the most remote outlet, including fitting allowances, is 55 feet. For Schedule 40 metallic pipe, gas specific gravity 0.60, inlet pressure below 2 psi, and a 0.5-inch-water-column pressure drop, the available table capacities are: 40-foot row: ½ inch = 81 CFH; ¾ inch = 170 CFH; 1 inch = 320 CFH; 1¼ inches = 657 CFH. 60-foot row: ½ inch = 65 CFH; ¾ inch = 137 CFH; 1 inch = 257 CFH; 1¼ inches = 528 CFH. What is the smallest listed nominal size that carries the required load?
Correct answer: C - 1 inch
At an ice-bin inspection, the 1-inch effective drain opening is secured 2½ inches above the flood-level rim of a properly sized, accessible, trapped and vented floor sink. There is no splashing. The indirect pipe has 24 inches of horizontal length and 48 inches of total developed length, with no separate trap. Under the 2024 IPC, how should this connection be evaluated?
Correct answer: A - Accept it; the air gap is adequate and a separate indirect-pipe trap is not required
A drainage section labels the upstream invert-the inside bottom of the pipe-at elevation 100.000 feet. The straight run extends 24 horizontal feet downstream at ¼ inch per foot. Its inside diameter is 4.00 inches throughout. A hanger-layout detail calls for the downstream pipe centerline elevation on the same datum, not its invert or crown. What elevation belongs on that detail, rounded to 0.001 foot?
Correct answer: B - 99.667 feet
A hotel distributes tempered hot water through an ASSE 1017 mixing valve. For a new individual shower, the installer proposes a conventional two-handle valve, arguing that the central mixing valve already provides all required scald protection. Which change satisfies the individual-shower control requirement of the 2024 IPC?
Correct answer: D - Fit an ASSE 1016 compensating shower valve and set its limit stop
During an authorized sewer-vault entry, a calibrated monitor reads 20.8% oxygen and 18% of the lower flammable limit. The entrants have no symptoms and are repairing a cold-water line without hot work. What instruction must the attendant give immediately?
Correct answer: B - Exit the vault now; entry must remain suspended until reauthorized
For an 8-foot sewer trench, a competent person finds dry, cohesive soil with an unconfined compressive strength of 1.8 tons/ft². Visible fissures are present; there is no seepage, submergence, granular soil or adverse layering. The crew will use ordinary simple sloping, not a short-term exception. Which determination matches OSHA soil-classification and sloping rules?
Correct answer: A - Type B; the ordinary maximum slope is 1H:1V
A restaurant reports poor faucet flow whenever two fixtures are used together. Gauges immediately before and after the water-service strainer both read 64 psi with all outlets closed. During the complaint, the upstream gauge reads 62 psi and the downstream gauge reads 28 psi. The gauges are at the same elevation, with only the strainer between them. Where do these readings locate the excessive pressure loss?
Correct answer: C - Across the strainer between the two gauges
A Utah residential boiler previously operated without chemical treatment and has an ASSE 1012 backflow preventer on its potable makeup line. A retrofit will introduce a toxic corrosion inhibitor, and boiler pressure can exceed supply pressure. The revised design retains a hard-piped makeup connection. Which replacement assembly is suitable for the resulting hazard?
Correct answer: C - An ASSE 1013 reduced-pressure-principle backflow prevention assembly
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