Level III Chapter 1 Worksheet

Transcription

1 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 2012 NC Plumbing Code Level 3 Page 1 of 14 Revised: 10/2016

2 Chapter 1 Answer Key 1. C D D NC Plumbing Code Level 3 Page 2 of 14 Revised: 10/2016

3 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 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, 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 NC Plumbing Code Level 3 Page 3 of 14 Revised: 10/2016

4 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 NC Plumbing Code Level 3 Page 4 of 14 Revised: 10/2016

5 Chapter 8 Answer Key 1. C C B C B NC Plumbing Code Level 3 Page 5 of 14 Revised: 10/2016

6 Chapter 9 Worksheet 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 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 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 2012 NC Plumbing Code Level 3 Page 6 of 14 Revised: 10/2016

7 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 2012 NC Plumbing Code Level 3 Page 7 of 14 Revised: 10/2016

8 Chapter 9 Answer Key 1. C T B C T B C T D T A T C T C T NC Plumbing Code Level 3 Page 8 of 14 Revised: 10/2016

9 Chapter 10 Worksheet 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 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 NC Plumbing Code Level 3 Page 9 of 14 Revised: 10/2016

10 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 & NC Plumbing Code Level 3 Page 10 of 14 Revised: 10/2016

11 Chapter 10 Answer Key 1. C D A D A D A # NC Plumbing Code Level 3 Page 11 of 14 Revised: 10/2016

12 Chapter 11 Worksheet 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 What is the maximum projected roof area that a 4 inch vertical leader can handle with a 4 inches per hour rainfall? a. 18,400 square feet b. 9,200 square feet c. 6,130 square feet d. 4,600 square feet 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 and 4 inches per hour rainfall? a. 4 b. 5 c. 6 d 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 2012 NC Plumbing Code Level 3 Page 12 of 14 Revised: 10/2016

13 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 2012 NC Plumbing Code Level 3 Page 13 of 14 Revised: 10/2016

14 Chapter 11 Answer Key 1. B D B A F A 5. D B NC Plumbing Code Level 3 Page 14 of 14 Revised: 10/2016