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UPC Chapter 6 Water Systems Part 2 Student CopyRV 12.29.20

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Quiz 11. The size of each water meter is based on

the _______ demand of the system. average typical minimum total none of the answers provided

2. The pressure loss through backflow prevention devices shall be included in the pressure loss calculations of the system, and the water supply pipe and meter shall be adequately sized to provide for any such pressure loss.

True False

3. Equivalent fixture values as shown in Table 610.3 are only for cold water demand.

True False

4. The WSFU for a dish washer in a private home is _______ of water.

1.0 1.5 3.0 4.0 5.0

5. To get the total WSFU for a system, add all of the WSFU of the fixtures together.

True False

6. The developed length of the system is the total length of the pipes to the most remote outlet.

1


True False

7. In designing a water system, use the _______ pressure in the water main.

minimum typical average maximum

Quiz 2 – Size Water System for Studio Apartment1. Design pressure at meter base is _______. 25 psi 45 psi 44 psi 52 psi 76 psi

2. The total demand WSFU for the entire system is _______.

5.0 6.5 9.0 15.5 24.0

3. The total WSFU to the water heater demand is _______.

5.0 6.5 7.5 15.5 24.0

4. The longest developed length from the meter to the most remote outlet is ______.

32 ft. 56 ft. 85 ft. 91 ft. 102 ft.

5. The design pressure range for sizing this system is _______.

30-45 psi 46-60 psi 60 psi

6. The maximum allowable length column for this system using Table 610.4 is _______.

40 60 80 100 150

7. The meter and street service is _______. 3/4 inch 1 inch 1-1/2 inches 2 inches

8. The building supply and branch service size is _______.

3/4 inch 1 inch 1-1/2 inch 2 inches

9. The main branch on this system has a total demand of _______ WSFU.

5.0 6.5 9.0 15.5 24.0

10. The branch supply to the water heater is _______.

3/4 inch 1 inch 1-1/2 inches 2 inches

Quiz 3 – Size Water System for Small House.In this quiz use 4.0 WSFU for clothes washer.1. Design pressure at meter base is _______. 35 psi 45 psi 47 psi 52 psi 76 psi


6.5 10.5 16.5 24.0 28.5


6.5 10.5 16.5 24.0 28.5

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4. The longest developed length from the meter to the most remote outlet is _______.

32 ft. 57 ft. 72 ft. 91 ft. 102 ft.


30-45 psi 46-60 psi 60 psi


40 60 80 100 150

7. The meter and street service is _______. 3/4 inch 1 inch 1-1/2 inches 2 inches



9. Branch 1 on this system has a total demand of _______ WSFU.

4.0 6.5 8.0 11.5 16.5

10. The size of the pipe to branch 1 is _______. 3/4 inch 1 inch 1-1/2 inches 2 inches11. Branch 2 on this system has a total demand

of _______ WSFU. 4.0 6.5 8.0 10.5 16.5

12. The size of the pipe to branch 2 is _______. 3/4 inch 1 inch 1-1/2 inches 2 inches

13. The total hot water demand WSFU for the system is _______.

5.0 7.5 10.5 14.0

14. The size of the pipe feeding the water heater is ________.


Quiz 4 – Size Water System for Town HouseIn this quiz use 4.0 WSFU for clothes washer.

1. Design pressure at meter base is _______. 35 psi 38 psi 45 psi 47 psi 52 psi


10.5 16.5 19.5 21.5 28.5


6.5 9.5 10.5 13.0 24.0


32 ft. 70 ft. 80 ft. 84 ft. 96 ft.

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30-45 psi 46-60 psi 60 psi


40 60 80 100 150

7. The meter and street service is ________. 3/4 inch 1 inch 1-1/2 inch 2 inches




6.5 8.0 11.5 16.5 20.5



4.0 6.5 7.5 10.5 12.5

12. The size of the pipe to branch 2 is ________.



7.0 13.0 15.5 18.0

14. The size of the pipe feeding the water heater is _________.


Quiz 5 – Size Water System for Rambler Style Home In this quiz use 4.0 WSFU for clothes washer.

1. Design pressure at meter base is _______. 35 psi 38 psi 45 psi 47 psi 52 psi


10.5 16.5 19.5 20.0 25.5


6.5 9.5 10.5 13.0 17.0


32 ft. 60 ft. 72 ft. 83 ft. 94 ft.


30-45 psi 46-60 psi 60 psi

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40 60 80 100 150

7. The meter and street service is ________. 3/4 inch 1 inch 1-1/2 inches 2 inches

8. The Building Supply and branch service size is ________.



6.5 8.0 11.5 13.0 21.0



4.0 6.5 7.5 10.5 12.5

12. The size of the pipe to branch 2 is _______. 3/4 inch 1 inch 1-1/2 inch 2 inches


4.0 6.5 8.0 10.5 17.0

14. The size of the pipe to branch 3 is _______. 1/2 inch 3/4 inch 1 inch 1-1/2 inch 2 inches


10.0 13.5 17.0 21.5



Quiz 6 – Size Water System for 2 Story HouseIn this quiz use 4.0 WSFU for clothes washer.

1. Design pressure at meter base is _______. 45 psi 47 psi 52 psi 65.5 psi 78 psi


14.5 16.5 19.5 25.5 29.0


9.5 10.5 13.0 18.0 27.5


101 ft. 122 ft. 140 ft. 143 ft.

5


158 ft.


30-45 psi 46-60 psi 60 psi


40 60 80 100 150

7. The meter and street service is _______. 3/4 inch 1 inch 1-1/2 inch 2 inches




6.5 8.0 11.5 13.0 21.0

10. The size of the pipe to branch 1 is _______. 1/2 inch 3/4 inch 1 inch 1-1/2 inches 2 inches


4.0 6.5 7.5 10.5 12.5

12. The size of the pipe to branch 2 is _______. 1/2 inch 3/4 inch 1 inch 1-1/2 inch 2 inches


4.0 6.5 7.5 18 20.5

14. The size of the pipe to branch 3 is _______. 1/2 inch 3/4 inch 1 inch 1-1/2 inches 2 inches


9.5 11.5 15.5 18.0


1/2 inch 3/4 inch 1 inch 1-1/2 inches 2 inches

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Quiz 7 FlushometersQuestions 1 – 10 refer to the above drawing1. Branch A is sized for _______ WSFU. 40 70 90 105 125

2. Branch B is sized for _______ WSFU. 48 55 63 87 118

3. Branch C is sized for _______ WSFU. 48 55 63 87 188

4. Branch D is sized for _______ WSFU. 40 70 90 105 125

5. Branch E is sized for _______ WSFU. 48 55 63 87 118

6. Branch F is sized for _______ WSFU. 93 107 185 278 363

7. Branch G is sized for _______ WSFU. 40 70 90 105 125

8. Branch H is sized for _______ WSFU. 48 55 63 87 118

9. Branch I is sized for _______ WSFU. 93 107 188 278 368

10. Given design minimum pressure of 65 psi, length 90, what is the minimum size for Branch I?

3/4 1 1-1/4 2 2-1/2

7


Questions 11 – 21 refer to the above drawing11. Branch A is sized for _______ WSFU. 40 70 90 105 125

12. Branch B is sized for _______ WSFU. 48 55 63 87 118

13. Branch C is sized for _______ WSFU. 93 107 188 278 363

14. Branch D is sized for _______ WSFU.

40 70 90 105 125

15. Branch E is sized for _______ WSFU. 45 70 90 105 125

16. Branch F is sized for _______ WSFU. 107 118 233 305 500

17. Branch G is sized for _______ WSFU. 45

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70 90 105 125

18. Branch H is sized for _______ WSFU. 107 188 248 253 278

19. Branch I is sized for _______ WSFU. 90 250 375 425 750

20. Branch J is sized for ______ WSFU. 107 188 238 253 278

21. Given design min. press. of 52 psi, length 75, what is the min. size for Branch J?

3/4 1 1-1/4 2 2-1/2

Quiz 8 1. The maximum velocity of water in a cold

water copper pipe is _________ per second. 3 feet 5 feet 8 feet 12 feet 15 feet

2. The maximum velocity of water in a hot water copper pipe is _________ per second.

3 feet 5 feet 8 feet 12 feet 15 feet

3. The maximum velocity of water in a cold water PEX tube is _________ per second.


4. The maximum velocity of water in a hot water PEX tube is _________ per second.


5. Drinking water treatment units shall comply with NSF 42 or NSF 53.

True False

6. Discharge from all drinking water treatment units shall enter the drainage system through an air gap.

True False

7. The tubing to and from drinking water treatment units shall be of a size and material as recommended by the manufacturer.

True False

8. The minimum size connection to a residential water softener is _________. (Hint:- Use Table 611.4 shown in Idaho Amendments)

1/2 inch 3/4 inch 1 inch none of the answers provide

Step 1. Determine design pressure to building.Use minimum pressure at meter plus or minus elevation at 0.5 psi per foot difference.

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Min press – (0.5 x Ft. above) = __________________________________

Min press + (0.5 x Ft. below) = __________________________________

Step 2. Table 610.3 Determine the number of Cold / Hot Water WSFU for the system.TABLE 610.3 WATER SUPPLY FIXTURE UNITS (WSFU)

Fixture Type Fixtures

Cold WSFU

Total WSFU - Cold Hot WSFU

Total WSFU Hot

BathTub / Shower 4.0 4.0

Shower 2.0 2.0

Water Closet 2.5 _________

_

Bath sink 1.0 1.0

LaundryLaundry sink 1.5 1.5

Clothes washer 4.0 4.0

KitchenKitchen sink 1.5 1.5

Dish washer 1.5* 1.5

Hose Bibb 2.5 _________

_

Hose Bibb - Add.

1.0 _________

_

TotalsImportant: Total System WSFU = Total Cold Water WSFU plus dishwasher WFSUBranch 1 Cold WSFU = ___________________________________ = ____________

Hot WSFU = ___________________________________ = ____________

Branch 2 Cold WSFU = ___________________________________ = ____________

Hot WSFU = ___________________________________ = ____________

Branch 3 Cold WSFU = ___________________________________ = ____________

Hot WSFU = ___________________________________ = ____________

Branch 4 Cold WSFU = ___________________________________ = ____________

Hot WSFU = ___________________________________ = ____________

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Total System Demand: Total of Branch 1 + 2 + 3 + 4 = ________________________________

Step 3. Determine the Hot Water demand for system. This will be used in Step 8 to size the branch line to the water heater.Hot water system demand = total of hot water WSFUs from each branch.

Branch 1 – total of hot water WSFU = ___________________________________= ____________




Total Hot Water Demand = Total of Branch 1 + 2 + 3 + 4 hot WSFU = ______________________

Step 4. Determine longest run of pipe to the remote outlet. (From meter base) Branch 1:Length of Cold: ____________________________________________ = ____________Length of Hot: _____________________________________________ = ____________

Branch 2:Length of Cold: ___________________________________________= ____________Length of Hot: ____________________________________________ = ____________



Longest run to remote outlet is __________ ft. (Branch _______ Cold / Hot)

Step 5. Determine the pressure range rows and column for the longest run. Use Table 610.4Always round up to the next vertical column of run of pipe to the remote outlet. Pressure range on Table 610.4 use: (cycle one) 30-45 psi 46–60 psi Over 60 psi

Max allowable length column use: (cycle one)40 60 80 100 150 200 250 300 400 500 600 700

Step 6. Size supply to meter and to building. Use Table 610.4Read the column until the minimum number of fixtures that were determined in Step 2 is found. Read Minimum Size Supply to Meter and to Building from far left column of table.

Use: Meter size 3/4 Building Supply size 3/4 1 11/4

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Use: Meter size 1 Building Supply size 1 11/4 11/2 2Use: Meter size 1 1/2 Building Supply size 11/4 11/2 2Use: Meter size 2 Building Supply size 11/2 2 2 ½

Step 7. Sizing branches.Calculate branch demand WSFU for both the cold and hot water.

Longest run to remote Outlet from Step 4 and the appropriate pressure rows, read the column to the total WSFU for that branch. The far left column will show the minimum branch size. Note that the branch size does NOT need to be larger than the building service size.

Branch 1: ______ (cold water WSFU) + _____ (hot water WSFU) =_____ total: _____” size




Step 8. Size supply ONLY to water heater.Size the pipe to Water Heater using Total Hot Water WSFU from Step 3.

Total system hot water WSFU = ________ total: _______ “size

12


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Quiz 2 – Studio ApartmentAll W. C. – 1.6 Gravity feedMin. Press. at meter – 48 psiHighest outlet above meter – 8 ft.Drawing NOT to Scale.

Pipe Section

Length

A 30 ft.B 16 ft.C 18 ft.D 6 ft.E 4 ft.F 18 ft.G 12 ft.H 15 ft.I 10 ft.


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Pipe Section

Length

Pipe Section

Length

A 20 ft. I 15 ft.B 10 ft. J 2 ft.C 18 ft. K 10 ft.D 15 ft. L 15 ft.E 5 ft. M 5 ft.F 3 ft. N 15 ft.G 20 ft. O 25 ft.H 12 ft.

Quiz 3 – 1 Bedroom Small HouseAll W. C. – 1.6 Gravity feedMin. Press. at meter – 40 psiHighest outlet above meter – 10 ft.Drawing NOT to Scale.


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Pipe Section

Length

Pipe Section

Length

A 20 ft. K 8 ft.B 10 ft. L 10 ft.C 2 ft. M 8 ft.D 3 ft. N 8 ft.E 10 ft. O 10 ft.F 8 ft. P 10 ft.G 3 ft. Q 8 ft.H 18 ft. R 20 ft.I 25 ft. S 12 ft.J 5 ft. T 20 ft.

Quiz 4 – 2 Bedroom Town House 1.5 BathAll W. C. – 1.6 Gravity feedMin. Press. at meter – 43 psiHighest outlet above meter – 10 ft.Drawing NOT to Scale.


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Pipe Section

Length

Pipe Section

Length

A 25 ft. M 10 ft.B 10 ft. N 3 ft.C 2 ft. O 10 ft.D 5 ft. P 8 ft.E 18 ft. Q 3 ft.F 5 ft. R 15 ft.G 3 ft. S 5 ft.H 25 ft. T 18 ft.I 25 ft. U 5 ft.J 5 ft. V 8 ft.K 3 ft. W 18 ft.L 15 ft.

Quiz 5 – Rambler House 2 BathAll W. C. – 1.6 Gravity feedMin. Press. at meter – 52 psiHighest outlet above meter – 10 ft.Drawing NOT to Scale.


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Quiz 6 – 3 Bedroom House 2 Story 2.5 BathAll W. C. – 1.6 Gravity feedMin. Press. at meter – 78 psiHighest outlet above meter – 25 ft.Drawing NOT to Scale.

Pipe Section

Length

Pipe Section

Length

Pipe Section

Length

A 50 ft. J 5 ft. S 3 ft.B 10 ft. K 3 ft. T 25 ft.C 2 ft. L 20 ft. U 5 ft.D 15 ft. M 20 ft. V 20 ft.E 25 ft. N 20 ft. W 5 ft.F 5 ft. O 3 ft. X 10 ft.G 3 ft. P 2 ft. Y 10 ft.H 15 ft. Q 15 ft. Z 20 ft.I 35 ft. R 10 ft.


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