Monthly Plumbing Quiz: September 2023

Good codes and regulations help ensure the proper operation of systems while protecting people’s health and safety. So how much do you know about codes and regulations? Take our quiz and find out—you could win a $25 gift card.
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1. The Uniform Plumbing Code Appendix M, the Water Demand Calculator, is an updated pipe-sizing formula for single and multifamily buildings that accurately predicts peak water demand to determine correct pipe sizes. Right-sized plumbing can:

a. Promote safer water by reducing stagnation time.

b. Reduce costs associated with unnecessarily large pipe diameters.

c. Deliver hot water faster.

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2. According to the International Plumbing Code, tempered water shall be supplied through a water temperature limiting device that conforms to ASSE 1070 and shall limit the tempered water to a maximum of –

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b. 120 degrees F

c. 130 degrees F

d. 140 degrees F

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3. According to the Uniform Plumbing Code, the maximum allowable lead content in pipes, pipe fittings, plumbing fixtures and fixtures intended to convey or dispense water for human consumption – with respect to their wetted surfaces – shall not be more than a weighted average of—

a. 0.15 percent

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c. 0.33 percent

d. 0.5 percent

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4. According to the Uniform Plumbing Code, which of the following fittings are prohibited from use as a drainage fitting?

a. Double hub fitting

b. Single or double tee branch

c. Running thread

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Photo: IAPMO

5. According to the Uniform Mechanical Code, potable water systems need to be identified with a _________ background with __________ lettering.

a. black, white

b. white, black

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d. yellow, green

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