Fixture Installation Flashcards
6 cards from real 306A practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Fixture Installation flashcards as text
What is the purpose of a 'rough-in valve' for a shower installation?
Answer: To provide the valve body and connections that are concealed within the wall, with the trim kit added later
A rough-in valve is installed within the wall during the framing stage, providing all pipe connections and the mixing mechanism. After the wall is finished, the trim kit (handle, escutcheon, showerhead) is attached to the valve body.
When installing a urinal, what is the standard height from the floor to the top of the urinal rim?
Answer: 600 mm (24 inches)
Standard urinals are installed with the rim at approximately 600 mm (24 inches) from the finished floor. Accessible urinals have a lower rim height of approximately 430 mm (17 inches).
What is the function of a waste and overflow assembly on a bathtub?
Answer: To connect the tub drain and overflow to a single outlet pipe while allowing the user to fill or drain the tub
The waste and overflow assembly connects the drain opening at the bottom of the tub and the overflow opening near the top to a single outlet pipe. The stopper mechanism allows the user to fill the tub or let it drain.
What is the recommended method for supporting a cast iron bathtub?
Answer: Set it in a mortar bed and provide a ledger board at the wall for the rim
Cast iron bathtubs are extremely heavy (often over 150 kg empty) and must be set in a mortar bed that distributes the weight evenly. A ledger board secured to the wall studs supports the tub rim at the wall.
What must be considered when installing a fixture on a floor that has radiant heating?
Answer: The location of radiant heating tubing must be mapped to avoid drilling or screwing into the heated floor
Before drilling into a floor with radiant heating, the exact location of the heating tubing must be determined to avoid puncturing it, which would cause leaks and system failure. Installation methods may need to be adapted.
What is the correct method for connecting a free-standing tub drain to the building drainage?
Answer: A flexible connector or adjustable trap assembly that accommodates the freestanding tub's position
Free-standing tubs require flexible or adjustable trap assemblies because the drain location is typically in the middle of the floor, away from walls, making rigid connections impractical. The flexible connection accommodates alignment and allows for future maintenance access.