Level II Chapter 1 Worksheet - NCDOI - Home Page€¦ · · 2016-12-28Level II Chapter 1 Worksheet ... Chapter 4 Answer Key 1. C 421.1 2. B TABLE 403.1 3. B ... Chapter 9 Worksheet

2012 NC Plumbing Code – Level 2 Page 1 of 26 Revised: 10/2016

Level II Chapter 1 Worksheet 1. For applicability requirements of the Plumbing Code, refer to: a. Building Code b. Administration and Enforcement Code c. Plumbing Code d. Residential Code 2. The provisions of the Plumbing Code shall apply to: a. every plumbing installation b. alterations and repairs c. replacements d. all of the above 3. The provisions of the Plumbing Code shall NOT apply to: a. Gas-fired water heaters b. Water heater venting systems c. Fuel gas piping d. All of the above


Level II Chapter 1 Answer Key

1. C 102

2. D 102

3. D 101.2


Level II Chapter 2 Worksheet

1. A water supply pipe connecting the fixture with the fixture branch? a. water distribution pipe b. fixture supply c. fixture branch d. water service pipe 2. A method of venting a fixture or fixtures through the soil or waste stack? a. stack venting b. special waste pipe c. indirect waste pipe d. vent stack


Level II Chapter 2 Answer Key 1. B

2. A



1. Annular spaces between sleeves and pipe in fire resistant rated assemblies shall be firestopped in accordance with:

a. Building Code b. Fire Code c. Electrical Code d. Mechanical Code 2. The top of water pipes, installed below grade outside the building, shall be:

a. Above the frost line b. Minimum 12 feet below finished grade c. Maximum 12 inches below finished grade d. Below the frost line or minimum of 12 inches below finished grade whichever

is greater. 3. Water piping installed in an unconditioned attic shall be insulated with a minimum R

factor of: a. 6.00 b. 6.25 c. 6.50 d. 6.75 4. Trenching installed parallel to footings shall not extend below the bearing plane of

the footing: a. 40 degree b. 45 degree c. 50 degree d. 55 degree 5. Cutting, notching or bored joist must comply with: a. The North Carolina Residential Code b. International Building Code or Appendix F in this code. c. International Building Code d. International Plumbing Code and the North Carolina Residential Code


6. A pipe exposed within a plenum shall comply with the: a. Plumbing Code b. Building Code c. Fire Code d. Mechanical Code 7. One inch copper tube shall be supported vertically at intervals not exceeding: a. 4 ft. b. 6 ft. c. 8 ft. d. 10 ft. 8. Two inch CPVC pipe shall be supported horizontally at intervals no more than: a. 2 ft. b. 4 ft. c. 6 ft. d. 8 ft. 9. All plastic piping of a plumbing system shall be tested with: a. Water b. Air c. Soap d. Water or air 10. Drainage piping shall be tested with a minimum head of water of: a. 5 ft. b. 10 ft. c. 15 ft. d. 20 ft. 11. The water distribution system shall be tested with air at a pressure not less

than________.

a. 50 psi b. 75 psi c. 100 psi

d. 150 psi


12. Where piping is less than 1.5 inches from the edge of the wood member it is incorporated in, it shall be protected by: I. Minimum .062 inch thick steel shield plates II. Shall extend a minimum of 1” above sole and 1” below top plates

a. I only b. II only c. Both I and II d. Neither I nor II

13. Sway bracing shall be provided at changes in direction greater than ________and for pipe sizes _______ and larger a. 22 degrees / 2 inch b. 22 degrees / 3 inch c. 45 degrees / 4 inch d. 45 degrees / 3 inch

14. Manhole covers shall be sealed when located below the design flood level.

a. True b. False


Level II Chapter 3 Answer Key 1. A 305.4

2. D 305.6

3. C 305.6

4. B 307.5

5. B 307.2

6. D 307.6

7. D TABLE 308.5

8. B TABLE 308.5

9. D 312.1

10. B 312.2

11. C 312.5

12. D 305.8

13. C 308.6

14. A 309.2



1. Whirlpool bathtubs shall meet the requirements of:

a. ASTM D 4451 b. ASME A112.19.7 c. ASME A112.19.7M d. N.C. Electrical Code

2. How many shower/tubs are required in a female dormitory, housing 120 girls?

a. 12 b. 15 c. 19 d. 23

3. How many urinals would be required in the men’s restroom in a football stadium

having a seating capacity of 40,000 people? a. 83

b. 0 c. 117 d. 168

4. How many water closets are required in the women’s restroom of a 5 theater

complex with a common lobby, with all of the motion picture theaters having 200 seats each? a. 8 b. 11 c. 9 d. 13

5. A restaurant has a seating capacity of 700 people. How many water closets

would be required in the women’s restroom? a. 5 b. 6 c. 7 d. 8



1. C 421.1

2. B TABLE 403.1

3. B 419.2 AND TABLE 403.1

4. A 419.2 AND TABLE 403.1

5. A 419.2 AND TABLE 403.1



1. The maximum allowable water usage for a metering lavatory faucet in a school is?

a. 2.2 gal per minute b. 0.25 gal per cycle c. 0.50 gal per minute d. 100 gal per minute

2. When pressure in the system exceeds_______ a pressure reducing valve will be

required?

a. 100 psi b. 75 psi c. 80 psi d. none of the above

3. What is the minimum size required for a water service? a. one half inch

b. three quarter inch c. one inch d. one and one quarter inch

4. What is the color identification for non-potable water within a building?

a. green/white b. red/white c. yellow/black d. black/yellow

5. How close is the main full open valve required to be from the door when installed in

the crawl space?

a. 8 ft b. 5 ft c. 2 ft d. 3 ft



1. B 604 TABLE 604.4

2. C 604.8

3. B 603.1

4. C TABLE 608.8.2

5. D 606.1



1. Any pipe or fitting that makes an angle of more than _____ with the vertical, is considered to be a horizontal pipe.

a. 60 degrees b. 45 degrees c. 30 degrees d. 90 degrees

2. Horizontal building drains 3 inch in diameter and larger shall be installed with a fall of not less than _____ per foot.

a. 1/4 inch b. 1/8 inch c. 1/2 inch d. 1 inch

3. Cleanouts for piping in a crawl space of 20 inches shall be located _____. a. in the crawl space. b. at any convenient location c. flush with the finished wall, floor or grade or extended to the outside of the building. d. no cleanout is required

4. Manholes serving building sewers 8 inches and larger shall be located at intervals not exceeding ______.

a. 75 feet b. 100 feet c. 50 feet d. 400 feet

5. What is the fixture unit value and minimum size trap for a domestic shower stall?

a. #2 at 2 inches b. #2 at 1½ inches c. #3 at 2 inches d. #4 at 3 inches


6. What is the maximum number of fixture units that may be connected to a 6 inch building sewer with 1/4 inch fall per foot?

a. not allowed b. 700 fixture units c. no limit of fixture units d. 840 fixture units

7. Cast iron building sewer pipe shall comply with what standard _____.

a. ANSI B 16.43 b. ASTM A 74 c. ASTM C 1053 d. ASTM C 76

8. The maximum capacity of a 2” sewage ejector is:

a. 10 gpm b. 21 gpm c. 15 gpm d. 30 gpm

9. If a short sweep fitting is used between pipes from horizontal to horizontal, the maximum

lavatory drain shall be:

a. 1 ½ “ b. 2” c. 2 ½ “ d. 3”



1. B SECTION 2 DEFINITIONS

2. B T - 704.1

3. C 708.4

4. D 708.3.2

5. B T - 709.1

6. D T - 710.1 (1)

7. B T - 702.3

8. B T - 712.4.2

9. B T - 706.3 NOTE A


Level II

Chapter 8 Worksheet

1. A restaurant has an indirect waste line discharging into a floor drain located in a closet and an additional indirect waste is discharged into a floor drain located in a toilet room. Which of the following makes this a code violation?

a. waste receptors shall not be installed in a closet b. waste receptors shall not be installed in a toilet room c. Both A and B d. None of the above

2. What is the minimum air gap required by the code for a 2 inch drain?

a. 2 b. 3 c. 4 d. 6

3. Indirect waste pipe exceeding _______ inches horizontal/developed or ______ inches in total developed lengths shall be trapped.

a. 18, 24 b. 24, 48 c. 36, 48 d. 30, 54

4. The outlet of the laundry tray shall be a maximum horizontal distance of _______inches from the standpipe trap.

a. 18 b. 24 c. 30 d. 42

5. The vertical standpipe inlet for a washing machine drain to the trap weir shall be a minimum of ______ inches?

a. 24 b. 18 c. 12 d. 36


Level II Chapter 8 Answer Key 1. C 802.3

2. C 802.2.1

3. B 802.2

4. C 802.4

5. B 802.4



1. On the lower floors of multi- story buildings, when wet venting, with 7 bathtubs, what size vent stack is required?

a. 2 b. 2½ c. 3 d. 4

2. With vertical combination waste and wet venting, a 4” diameter stack with a maximum length of 100’ would be required for 6 public use water closets.

a. True b. False

3. A 4” diameter drain having 300 fixture units, 60 foot long vent, requires a vent stack of ___________.

a. 2” b. 2½” c. 3” d. 4”

4. Can the waste pipe from one or two lavatories be used as a wet vent for one or two bathtubs or shower on the top floor of a multi-story building?

a. Yes b. No

5. A domestic bathtub has a 1½ p-trap and a 2” waste arm. What is the maximum length of this trap arm to its vent

terminal?

a. 5 feet b. 8 feet c. 6 feet d. 10 feet


6. A multi-story apartment building is using wet vent tubs and shower on all floors. there are 6 tubs and 5 showers. The minimum size vent stack is? a. 3 inches b. 2 inches c. 2½ inches d. 4 inches

7. A 4 inch soil stack has 250 dfu connected to it. This stack is vented with a 3” stack vent. What would be the maximum permitted length of this stack vent? a. 170 feet b. 260 feet c. 70 feet d. 250 feet

8. A 4” soil stack receives the discharge of 180 dfu. This soil stack is stack vented to the open air, but this vent is not the main vent for the building. The stack vent portion is 36 feet, what is its minimum size? a. 1½ inches b. 2 inches c. 2½ inches d. 3 inches

9. A 5 inch horizontal branch is required to have a relief vent. The relief vent is serving as a relief for 96 dfu. The developed length of this vent is 24 feet. What is the minimum allowed size of this relief vent? a. 1½ inches b. 2 inches c. 2½ inches d. 3 inches


Level II Chapter 9 Answer Key 1. C T 909.4

2. B 910.2

3. C T 916.1

4. B 909.4

5. C T 906.1

6. D T 909.4

7. A T 916.1

8. C T 916.1

9. C T 916.1



1. Which of the following is an approved trap?

a. S-trap b. Bell-trap c. P-trap d. Crown-trap

2. Sand and similar interceptors for heavy solids shall have a water seal of not less

than _____ inches. a. 1 b. 2 c. 4 d. 6

3. Each interceptor shall be ________.

a. properly vented b. at least 3 inches in diameter c. galvanized d. designed to become air bound

4. Traps shall have a water seal of not more than ____ inches and not less

than_______ inches. a. 3 & 2 b. 4 & 1 c. 2 & 4 d. 4 & 2

5. An intercepting device shall prevent the passage of solids of ____ inch and larger.

a. ½ b. ¼ c. ¾ d. 1


6. Interceptors shall be maintained in efficient operating condition by ____ removal of accumulated grease. a. annual b. semi-annual c. monthly d. periodic

7. A combination plumbing fixture may be installed on one trap, if one compartment is

not more than ____ inches deeper than the other and the waste outlets are not more than ____ inches apart. a. 6 & 30 b. 12 & 24 c. 6 & 18 d. 4 & 24



1. C 1002.3

2. D 1003.5

3. A 1003.9

4. D 1002.4

5. A 1003.6

6. D 1003.10

7. A 1002.1 #2



1. When roof drains are provided they shall have strainers extending not less than

_________ inches above the surface of the roof immediately adjacent to the roof drain. a. 3 b. 4 c. 5 d. 6

2. What is the maximum projected roof area that a 4 inch vertical leader can handle at

4” rain fall per hour? a. 1,880 b. 2,650 c. 3,760 d. 4,600

3. A roof has an area of 4,600 square feet. What is the minimum size horizontal drain

required if it has 1/4” per foot fall at 4” rain fall per hour? a. 4” b. 5” c. 6” d. 8”

4. Secondary roof drain systems are sized according to what rain flow rate?

a. 100 year, 15 minute precipitation b. 100 year, 60 minute precipitation c. 60 year, 15 minute precipitation d. 60 year, 60 minute precipitation


5. A receptacle designed to collect surface or rain water from an open area is a a. Conductor b. Leader c. Backwater device d. Area drain

6. Which of the following shall not be connected to a storm drain?

a. Roof leaders b. Floor drains c. Area drains d. Roof conductors



1. B 1105.1

2. D T - 1106.2

3. B T - 1106.3

4. A F - 1106.1A

5. D DEF 202

6. B 1104.3

Documents

Level II Chapter 1 Worksheet - NCDOI - Home Page€¦ · · 2016-12-28Level II Chapter 1 Worksheet ... Chapter 4 Answer Key 1. C 421.1 2. B TABLE 403.1 3. B ... Chapter 9 Worksheet