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 test is performed on a finished water closet installation to check for leaks at the wax ring seal?
Answer: Fill the bowl with dyed water and check for leaks at the floor connection
Filling the bowl with dyed water and leaving it overnight is a reliable method to detect slow leaks at the wax ring seal. Any coloured water appearing at the base of the toilet indicates a failed seal.
What is the maximum distance from a cleanout to the trap on a fixture with a concealed trap (such as a bathtub)?
Answer: An accessible cleanout must be provided
When a fixture trap is concealed (such as a bathtub trap in a floor or ceiling cavity), an accessible cleanout must be provided within a reasonable distance to allow maintenance access for clearing blockages.
Why should plumber's putty NOT be used on certain types of stone or composite sinks?
Answer: The oils in plumber's putty can stain or damage porous stone and certain composite materials
Plumber's putty contains oils that can leach into porous stone (marble, granite, limestone) and certain composite materials, causing permanent stains or discolouration. Silicone sealant should be used instead for these materials.
What is the proper torque sequence when tightening the closet bolts on a water closet?
Answer: Alternate between bolts, tightening gradually and evenly until snug
The closet bolts should be tightened alternately and gradually to ensure the toilet settles evenly onto the wax ring and flange. Over-tightening or uneven tightening can crack the porcelain base.
What is the standard rough-in height for a shower valve?
Answer: 1200 mm (48 inches) from the shower floor
The standard rough-in height for a shower valve is approximately 1200 mm (48 inches) from the shower floor, though this can be adjusted for specific installations and user preferences.
What must be installed between a water heater discharge pipe and the floor drain?
Answer: An air gap — the pipe must terminate above the flood level rim of the drain
The temperature and pressure (T&P) relief valve discharge pipe must terminate with an air gap above the floor drain to prevent any possibility of contaminated water backflowing into the water heater through the relief valve.