Plumbing Fixtures & Appliances

Question 1

What is the maximum flow rate for a residential showerhead under current federal EPAct standards?

Accepted Answer

2.5 GPM

Answer

1.5 GPM

Answer

2.0 GPM

Answer

3.0 GPM

Question 2

What is the maximum flush volume for a water closet (toilet) under federal standards?

Accepted Answer

1.6 GPF

Answer

1.0 GPF

Answer

1.28 GPF

Answer

2.0 GPF

Question 3

What is the minimum rough-in distance from the back wall for a standard toilet rough-in?

Accepted Answer

12 inches

Answer

10 inches

Answer

14 inches

Answer

16 inches

Question 4

What type of wax ring alternative provides a better seal for uneven floors when installing a toilet?

Accepted Answer

Double-stacked wax ring or foam gasket seal

Answer

Silicone caulk only

Answer

Plumber's putty

Answer

Teflon tape wrap

Question 5

What is the purpose of a P-trap under a kitchen sink?

Accepted Answer

To hold a water seal that blocks sewer gases from entering

Answer

To filter food particles from drain water

Answer

To regulate water pressure to the faucet

Answer

To connect hot and cold supply lines

Question 6

What is the correct rough-in height for a bathroom lavatory (sink) drain?

Accepted Answer

16–20 inches AFF

Answer

12 inches AFF

Answer

24 inches AFF

Answer

30 inches AFF