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The WI-JP exam has 207 questions and runs 6 hours.
After a check valve is added to a home's water service, pressure on the house side rises gradually from 60 to 105 psi during water-heater recovery. Upstream pressure stays at 60 psi, the heater cycles normally, and opening a faucet immediately relieves the increase. Which repair addresses the cause of this pattern?
Correct answer: C - Install a properly sized and precharged potable-water expansion tank.
A 2-inch trap arm has a developed length of 5.5 feet and slopes 1/4 inch per foot into a vertical sanitary tee, with the vent continuing upward. To improve the sweep into the vertical drain, the installer proposes a wye-pattern fitting at the same location. How does that change affect Wisconsin's trap-to-vent distance limit?
Correct answer: A - The sanitary tee complies; the wye-pattern connection would exceed its 4.5-foot limit.
Effluent entering a mound has monthly average BOD5 of 24 mg/L and TSS of 46 mg/L; the other influent limits are satisfied. The proposed sand-fill loading rate is 2.0 gallons per square foot per day. What do these results require for that loading rate?
Correct answer: C - Limit the rate to 1.0 because TSS exceeds 30 mg/L.
A residential sprinkler in an NFPA 13D (2019) design protects an 18-foot by 18-foot area. The required density is 0.05 gpm/ft², but the sprinkler's listing requires 20 gpm at that spacing. Its K-factor is 5.6 gpm/√psi. Of the following residual pressures at the sprinkler, which is the lowest that satisfies the required discharge?
Correct answer: D - 14 psi
During a plumbing renovation, a worker enters a sewage pump chamber without entry precautions and collapses. You are outside the opening. No retrieval line is attached, and neither you nor the other workers are trained for confined-space rescue. What is the immediate response?
Correct answer: B - Call emergency rescue and prevent anyone else from entering the chamber.
A proposed 4-inch sanitary stack has five branch intervals and carries 360 drainage fixture units in total. Side connections within one interval contribute 100 dfu. The designer cites the 500-dfu total-stack allowance. Does that allowance establish that the proposed stack size is adequate?
Correct answer: D - No; the 100-dfu interval exceeds the separate 90-dfu side-connection limit.
A proposed soil treatment site has an estimated daily wastewater flow of 900 gallons and a design wastewater flow of 1,350 gallons. Its evaluation includes one soil pit and two 2-inch hand-auger borings. All three profiles are properly located and described, and the pit establishes the application rate. Considering the minimum number and type of explorations, what is the correct finding?
Correct answer: B - The three evaluations meet the minimum; estimated daily flow governs the pit count.
A chemical-feed loop can reach 85 psi while its potable makeup supply is at 60 psi. The process liquid is toxic, and the makeup connection remains under continuous pressure between cycles. Which of these devices is suitable for protecting the potable supply from this combination of conditions?
Correct answer: A - Reduced-pressure-principle assembly, ASSE 1013.
A public building's holding-tank design uses an established estimated daily wastewater flow of 540 gallons and a design wastewater flow of 810 gallons. The supplier offers the liquid capacities listed below. Select the smallest offered tank that meets the DSPS holding-capacity requirement.
Correct answer: A - 3,000 gallons
A commercial roof has primary drains and secondary overflow drains. Their piping remains separate inside the building but joins one storm line below grade. That shared line has been sized for the combined flow. Which drawing revision is still necessary?
Correct answer: C - Route the secondary system independently to a separate, observable discharge.
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