Free Journeyman Plumber Exam Questions That Helps Candidates Pass

Vertical cast iron piping must be supported at its base and at each floor level. Journeyman exams test this requirement because incorrect support causes settlement, joint stress, and system failure.

Ice machines must discharge through an indirect waste connection with an air gap to prevent contamination. Direct connections are prohibited because they could allow sewage to back up into potable ice. Journeyman exams test fixture connection rules to ensure public health protection.

DWV systems tested with air must withstand 5 psi for 15 minutes or 10 psi for 15 minutes depending on code. Hydrostatic tests use a 10-foot head of water. Journeyman exams stress this because safety and inspection requirements must be strictly followed.

Water supply systems must be hydrostatically tested at 150 psi or 50 psi above working pressure, whichever is greater. Journeyman exams stress this because inspectors enforce this standard to verify leak-free installations.

Federal standards limit showerheads to 2.5 gallons per minute at 80 psi. Some states (e.g., California) mandate stricter limits, such as 2.0 gpm. Journeyman exams test this because conservation rules are enforceable code requirements.