Plumbing Code Book Quiz

What is the minimum slope required for a horizontal drainage pipe that is 3 inches in diameter according to the 2018 Uniform Plumbing Code?

• 1/8 inch per foot

• 1/4 inch per foot

• 1/2 inch per foot

• 3/4 inch per foot

According to the 2018 Uniform Plumbing Code, what is the maximum allowable distance between cleanouts in a horizontal drainage pipe?

• 50 feet

• 75 feet

• 100 feet

• 150 feet

What is the minimum size of a vent pipe serving a water closet according to the 2018 Uniform Plumbing Code?

• 1 inch

• 1.5 inches

• 2 inches

• 3 inches

According to the 2018 Uniform Plumbing Code, what is the minimum air gap required for a lavatory faucet?

• 1 inch

• 1.5 inches

• 2 inches

• 2.5 inches

What is the maximum allowable temperature for hot water delivered to public lavatories according to the 2018 Uniform Plumbing Code?

• 110°F

• 120°F

• 130°F

• 140°F

According to the 2018 Uniform Plumbing Code, what is the minimum size of a building sewer?

• 2 inches

• 3 inches

• 4 inches

• 6 inches

What is the minimum height for a vacuum breaker installed on a hose bibb according to the 2018 Uniform Plumbing Code?

• 4 inches above the highest point of usage

• 6 inches above the highest point of usage

• 8 inches above the highest point of usage

• 12 inches above the highest point of usage

According to the 2018 Uniform Plumbing Code, what is the minimum size of a trap arm for a 1.5-inch drain pipe?

• 1 inch

• 1.25 inches

• 1.5 inches

• 2 inches

What is the maximum allowable length of a trap arm for a 2-inch drain pipe according to the 2018 Uniform Plumbing Code?

• 3 feet

• 4 feet

• 5 feet

• 6 feet

According to the 2018 Uniform Plumbing Code, what is the minimum size of a vent pipe for a kitchen sink?

• 1 inch

• 1.25 inches

• 1.5 inches

• 2 inches