Journeyman Plumber Exam practice questions
205 free questions with answers and explanations.
- 201.A plumber is installing a gas-fired commercial water heater in a mechanical room. The manufacturer's instructions specify that the appliance requires 100 cubic feet per minute (CFM) of combustion air. The mechanical room has two permanent openings to the outdoors: a high opening measuring 12 inches x 12 inches and a low opening measuring 18 inches x 6 inches. Are these combustion air openings adequate for the water heater?Gas Piping
- 202.A plumber is installing a gas clothes dryer in a residential laundry room. What is the maximum allowable length for a flexible gas appliance connector used for this installation, according to most plumbing codes?Gas Piping
- 203.A plumber is installing a water service line from a municipal main to a new commercial building. The building's water demand requires a 2-inch diameter service line. What is the minimum burial depth required for this water service pipe in an area where the frost line is 30 inches deep, assuming local code mandates a minimum of 6 inches below the frost line?Water Supply Systems
- 204.A plumber is inspecting the venting system for a Category I natural draft gas furnace. The vent connector from the furnace to the chimney has a horizontal run of 8 feet. The furnace has an outlet collar of 6 inches in diameter. What is the minimum required rise for this horizontal vent connector, according to standard plumbing and mechanical codes?Gas Piping
- 205.A plumber is installing a new natural gas line in a residential home. According to most plumbing codes, what is the minimum working pressure at which the gas piping system must be tested?Gas Piping