Chapter 6: Water Supply and Distribution

Question 1

The code requirement for “an adequate supply of potable running water is for _________.

Answer 1

Cleansing and sanitation (601.1)

Question 2

The primary reason for installing backflow prevention assemblies is to _______________.

Answer 2

prevent pollution or contamination of the potable water supply (602)

Question 3

the minimum height of the atmospheric vacuum breaker above the highest part of the urinal equipped with a flushometer valve is _______ inches.

Answer 3

6 inches (603.4.1)

Question 4

The minimum height of the atmospheric vacuum breaker above all downstream piping for lawn sprinkler system atmospheric vacuum breakers is ___________ inch(es).

Answer 4

12 inches (Table 6-2)

Question 5

PEX tubing shall not be installed within the first _________ of piping connected to a water heater.

Answer 5

18 inches (604.11.2)

Question 6

Ballcocks in water closet tanks shall be installed so that the critical level of the water inlet is above the full opening of the overflow pipe at least ___________ inch(es).

Answer 6

1 inch (603.4.2)

Question 7

Each outlet on a nonpoable waterline that mayh be used for drinking purposes shall be posted __________.

Answer 7

CAUTION- NONPOTABLE WATER DO NOT DRINK

Question 8

The piping material not approved in the cold water piping located inside a building is ____.

Answer 8

PVC, asbestos cement, and PE (Table 6-4)

Question 9

Copper water tube Type M may be installed within a building _________.

Answer 9

Above ground only (604.2)

Question 10

A water piping system with a pressure of 110 psi will require a(n) __________.

Answer 10

Pressure regulator and strainer (608.2)

Question 11

Combination temperature and pressure relief valves shall be installed _________.

Answer 11

Based on their listing requirements and the manufacturer’s instructions (608.3)

Question 12

Water piping may be installed in the same trench with sewer piping made of __________.

Answer 12

Cast iron (609.2)

Question 13

CPVC water pipe may be used for hot and cold distribution systems ___________.

Answer 13

Within a building (Table 6-4)

Question 14

Unions shall be installed in a water supply system within 12 inches of __________.

Answer 14

Regulating equipment (609.5)

Question 15

Each pressure-relief valve installed inside of the building shall have a ___________.

Answer 15

Full size drain extended to the outside (608.5)

Question 16

The quantity of water required to be supplied to every plumbing fixture shall be presented by _________,

Answer 16

Fixture units (610.3)

Question 17

Hard-drawn copper tubing, marked with a blue stripe, is referred to as _________.

Answer 17

Type “L” (604.3)

Question 18

The color stripe on Type “K” hard-drawn copper is ____________.

Answer 18

Green (604.3)

Question 19

Except for plastic piping, water supply water piping systems may be tested with _______.

Answer 19

50 psi air pressure (609.4)

Question 20

The duration for a water system pressure test shall be for a period of not less than _______ minutes.

Answer 20

15 minutes (609.4)

Question 21

In occupancies where plumbing systems are installed for ______, hot water shall be required for bathing and washing purposes.

Answer 21

Public use (601.1)

Question 22

Except as required in sections 1610.0 and 1617.0, nonpatable water systems shall have a _______ with uppercase lettering with the words “CAUTION: NONPOTABLE WATER, DO NOT DRINK.”

Answer 22

Yellow background (601.2.2)

Question 23

Plastic materials for _________ piping outside underground shall have a blue insulated copper tracer wire or other approved conductor installed adjacent to the piping.

Answer 23

Water service (604.8)