CHI Plumbing Systems Inspection Flashcards
6 cards from real CHI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CHI Plumbing Systems Inspection flashcards as text
What is the proper installation requirement for a shower pan liner when a home inspector evaluates a tile shower with a mortar bed?
Answer: The liner must extend at least 2 inches above the top of the curb
Shower pan liners must extend at least 2 inches above the top of the threshold or curb to contain any water that penetrates the tile surface.
A home inspector finds a water heater with a manufacture date 18 years ago still in service. What should the report note?
Answer: The unit has exceeded its typical service life and replacement should be budgeted
Standard tank water heaters have a typical service life of 8–12 years; a unit at 18 years is well past its expected lifespan and at elevated risk of failure.
Which of the following correctly describes a cross-connection hazard in residential plumbing?
Answer: A physical link between a potable supply line and a non-potable source
A cross-connection is any physical link between the potable water supply and a contaminated or non-potable source that could allow contamination to enter the drinking water.
During an inspection, the home inspector checks for functional flow by running multiple fixtures simultaneously. Which combination best tests the system under load?
Answer: Shower, toilet flush, and laundry cold fill simultaneously
Running the shower, flushing a toilet, and filling the laundry simultaneously draws significant volume and reveals pressure drop issues that low-demand testing would miss.
What is the significance of a 'wet vent' in a residential plumbing system?
Answer: A single pipe that serves as both a drain and a vent for a fixture
A wet vent is a pipe that simultaneously carries wastewater from one fixture and provides venting for another fixture, an arrangement permitted under specific code conditions.
A home inspector notes that the temperature and pressure relief (TPR) valve on a water heater has a discharge pipe that terminates outside the building through an exterior wall. Is this acceptable?
Answer: Yes, if the pipe is sloped downward and terminates within 6 inches of grade
Exterior termination of a TPR discharge pipe is acceptable when the pipe slopes downward, is protected from freezing, and ends close to grade to prevent scalding hazards.