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2021 Uniform Plumbing Code Study Guide > SIZING: DFU, WSFU, VENT, BTU > Flashcards

SIZING: DFU, WSFU, VENT, BTU Flashcards

1
Q

Maximum units for 1-1/4” drainage piping if draining vertically

A

1 Unit

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2
Q

Maximum units for 1-1/4” drainage piping if draining horizontally

A

1 Unit

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3
Q

Maximum units for 1-1/2” drainage piping if draining vertically

A

2 units (Except sinks, urinals, and dishwashers exceeding 1 fixture unit)

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4
Q

Maximum units for 1-1/2” drainage piping if draining horizontally

A

1 unit

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5
Q

Maximum units for 2” drainage piping if draining vertically

A

16 units (except six-unit traps or water closets)

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6
Q

Maximum units for 2” drainage piping if draining horizontally

A

8 units (except six-unit traps or water closets)

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7
Q

Maximum units for 3” drainage piping if draining vertically

A

48 units (only 4 water closets or six-unit traps allowed on a vertical pipe or stack)

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8
Q

Maximum units for 3” drainage piping if draining horizontally

A

35 units (not to exceed 3 water closets or six-unit traps on a horizontal branch or drain)

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9
Q

Maximum units for 4” drainage piping if draining horizontally

A

216 units (based on 1/4” per foot slope. For 1/8” per foot slope, multiply fixture units by a factor of 0.8)

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10
Q

Maximum units for 4” drainage piping if draining vertically

A

256 units

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11
Q

True or False: There is no maximum length for drainage piping in a horizontal orientation.

A

True. Maximum horizontal length for drainage piping is unlimited.

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12
Q

What is the maximum length allowed for 1-1/4” drainage piping in a vertical orientation?

A

45 feet

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13
Q

What is the maximum length allowed for 1-1/2” drainage piping in a vertical orientation?

A

65 feet

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14
Q

What is the maximum length allowed for 2” drainage piping in a vertical orientation?

A

85 feet

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15
Q

What is the maximum length allowed for 3” drainage piping in a vertical orientation?

A

212 feet

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16
Q

What is the maximum length allowed for 4” drainage piping in a vertical orientation?

A

300 feet.

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17
Q

True or false?
In vent piping, both the horizontal and vertical carry the same values for maximum length and maximum units.

A

True.

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18
Q

Maximum venting units for 1-1/4” pipe?

A

1 unit

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19
Q

Maximum venting units for 1-1/2” pipe?

A

8 units. (Except six-unit traps or water closets)

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20
Q

Maximum venting units for 2” pipe?

A

24 units

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21
Q

Maximum venting units for 3” pipe?

A

84 units

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22
Q

Maximum venting units for 4” pipe?

A

256 units (same as the vertical drainage units for 4”)

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23
Q

Maximum length in feet for 1-1/4” vent piping

A

45 feet

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24
Q

Maximum length in feet for 1-1/2” vent piping

A

60 feet

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25
Maximum length in feet for 2” vent piping
120 feet
26
Maximum length in feet for 3” vent piping
212 feet
27
Maximum length in feet for 4” vent piping
300 feet
28
Maximum DFU for a trap and trap arm in 1-1/4”
1unit
29
Maximum DFU for a trap and trap arm in 1-1/2”
3 units
30
Maximum DFU for a trap and trap arm in 2”
4 units
31
Maximum DFU for a trap and trap arm in 3”
6 units
32
Maximum DFU for a trap and trap arm in 4”
8 units
33
What is the equivalent fixture unit value for “Up to 7-1/2 GPM” in intermittent discharge capacity?
Equals 1 fixture unit
34
What is the equivalent fixture unit value for “greater than 7-1/2 to 15 GPM” in intermittent discharge capacity?
Equals 2 fixture units
35
What is the equivalent fixture unit value for “greater than 15 to 30 GPM” in intermittent discharge capacity?
Equals 4 fixture units
36
What is the equivalent fixture unit value for “greater than 30 to 50 GPM” in intermittent discharge capacity?
Equals 6 fixture units.
37
What is the minimum size trap and trap arm for a bathtub or combination bath/shower?
1-1/2”
38
What is the minimum size trap and trap arm for a clothes washer, domestic, standpipe?
2”
39
What is the minimum size trap and trap arm for a drinking fountain or water cooler?
1-1/4”
40
What is the minimum size trap and trap arm for a floor drain?
2”
41
What is the minimum size trap and trap arm for a shower?
2”
42
What is the minimum size trap and trap arm for a lavatory?
1-1/4”
43
What is the minimum size trap and trap arm for a bar sink?
1-1/2”
44
What is the minimum size trap and trap arm for a commercial sink with food waste?
1-1/2”
45
What is the minimum size trap and trap arm for a kitchen sink, domestic?
1-1/2”
46
What is the minimum size trap and trap arm for a laundry sink?
1-1/2”
47
What is the minimum size trap and trap arm for a urinal, integral trap?
2”
48
What is the minimum size trap and trap arm for a water closet?
3”
49
What is the drainage fixture unit value for a bathtub or combination bath/shower?
2.0 DFU
50
What is the drainage fixture unit value for a bidet with a 1-1/4” trap?
1 DFU
51
What is the drainage fixture unit value for a bidet with a 1-1/2” trap?
2.0 DFU
52
What is the drainage fixture unit value for a clothes washer, domestic, standpipe?
3.0 DFU
53
What is the drainage fixture unit value for a dishwasher, domestic, with independent drain?
2.0 DFU
54
What is the drainage fixture unit value for a drinking fountain/water cooler?
0.5 DFU
55
What is the drainage fixture unit value for floor drain?
2.0 DFU
56
What is the drainage fixture unit value for shower, single-head trap?
2.0 DFU
57
What is the drainage fixture unit value for each additional shower head in a multi-head shower?
1.0 DFU
58
What is the drainage fixture unit value for a lavatory?
1.0 DFU
59
What is the drainage fixture unit value for a bar sink?
1.0 DFU
60
What is the drainage fixture unit value for a kitchen sink?
2.0 DFU
61
What is the drainage fixture unit value for a laundry sink?
2.0 DFU
62
What is the drainage fixture unit value for a urinal?
2.0 DFU
63
What is the drainage fixture unit value for a water closet with a 1.6GPF tank or flushometer valve?
3.0 private, 4.0 public
64
What is the drainage fixture unit value for a water closet with a greater than 1.6 GPF tank or flushometer valve?
4.0 private, 6.0 public
65
What is the minimum allowed fixture branch pipe size, in inches, for a bathtub or combination bath/shower?
1/2”
66
What is the minimum allowed fixture branch pipe size, in inches, for a bidet?
1/2”
67
What is the minimum allowed fixture branch pipe size, in inches, for a clothes washer? (WSFU)
1/2”
68
What is the minimum allowed fixture branch pipe size, in inches, for a dishwasher?
1/2”
69
What is the minimum allowed fixture branch pipe size, in inches, for a drinking fountain or water cooler?
1/2”
70
What is the minimum allowed fixture branch pipe size, in inches, for a hose bibb?
1/2”
71
What is the minimum allowed fixture branch pipe size, in inches, for a lavatory?
1/2”
72
What is the minimum allowed fixture branch pipe size, in inches, for any kind of sink?
1/2”
73
What is the minimum allowed fixture branch pipe size, in inches, for a shower head?
1/2”
74
What is the minimum allowed fixture branch pipe size, in inches, for a urinal with a flushometer valve?
3/4”
75
What is the minimum allowed fixture branch pipe size, in inches, for a urinal with a flush tank?
1/2”
76
What is the minimum allowed fixture branch pipe size, in inches, for a tank-style water closet?
1/2”
77
What is the minimum allowed fixture branch pipe size, in inches, for a water closet, flushometer valve?
1”
78
What is the Water Supply Fixture Unit value for a bathtub or combination bath/shower?
4.0 WSFU
79
What is the Water Supply Fixture Unit value for a bidet?
1.0 WSFU
80
What is the Water Supply Fixture Unit value for a clothes washer?
4.0 WSFU
81
What is the Water Supply Fixture Unit value for a dishwasher, domestic?
1.5 WSFU
82
What is the Water Supply Fixture Unit value for a drinking fountain or water cooler?
0.5 WSFU
83
What is the Water Supply Fixture Unit value for a hose Bibb?
2.5 WSFU
84
What is the Water Supply Fixture Unit value for each additional hose Bibb?
1.0 WSFU
85
What is the Water Supply Fixture Unit value for a lavatory?
1.0 WSFU
86
What is the Water Supply Fixture Unit value for a bar sink?
1.0 private, 2.0 public
87
What is the Water Supply Fixture Unit value for a kitchen sink, with or without dishwasher?
1.5 WSFU
88
What is the Water Supply Fixture Unit value for a laundry sink?
1.5 WSFU
89
What is the Water Supply Fixture Unit value for a shower, per head?
2.0 WSFU
90
What is the Water Supply Fixture Unit value for a flush tank urinal?
2.0 WSFU
91
What is the Water Supply Fixture Unit value for a 1.6. GPF tank water closet?
2.5 WSFU
92
What is the WSFU value for 1 water closet flushometer valve?
40 WSFU
93
When there are 2 water closet flushometer valves, what is the WSFU value of the second valve?
30 WSFU
94
When there are 3 water closet flushometer valves, what is the WSFU value of the third valve?
20 WSFU
95
When there are 4 water closet flushometer valves, what is the WSFU value of the fourth valve?
15 WSFU
96
When there are 5 or more water closet flushometer valves, what is the WSFU value of the fifth, and each additional valve?
10 WSFU each
97
What is the WSFU value for 1 urinal with a flushometer valve?
20 WSFU (which is half the value of a WC Flushometer valve)
98
When there are 2 urinal flushometer valves, what is the WSFU value of the second valve?
15 WSFU
99
When there are 3 urinal flushometer valves, what is the WSFU value of the third valve?
10 WSFU
100
When there are 4 urinal flushometer valves, what is the WSFU value of the fourth valve?
8 WSFU
101
When there are 5 or more urinal flushometer valves, what is the WSFU value for the fifth, and each additional valve?
5 WSFU each
102
What is the approximate BTU/H input for a single-family warm air furnace, according to table 1208.4.1?
100,000 btu/h
103
What is the approximate BTU/H input for a multi-family warm air furnace, per unit, according to table 1208.4.1?
60,000 btu/h
104
What is the approximate BTU/H input for a single-family hydronic boiler, according to table 1208.4.1?
100,000 btu/h
105
What is the approximate BTU/H input for a 30 to 40 gallon tank water heater, according to table 1208.4.1?
35,000 Btu/h
106
What is the approximate BTU/H input for a 50 gallon tank water heater, according to table 1208.4.1?
50,000 Btu/h
107
What is the approximate BTU/H input for a domestic range, according to table 1208.4.1?
65,000 Btu/h
108
What is the approximate BTU/H input for a gas refrigerator , according to table 1208.4.1?
3000 Btu/h
109
What is the approximate BTU/H input for a clothes dryer, according to table 1208.4.1?
35,000 Btu/h
110
What is the approximate BTU/H input for a gas fireplace, direct vent, according to table 1208.4.1?
40,000 Btu/h
111
What is the approximate BTU/H input for a gas log, according to table 1208.4.1?
80,000 Btu/h
112
What is the approximate BTU/H input for a barbecue, according to table 1208.4.1?
40,000 Btu

2021 Uniform Plumbing Code Study Guide (17 decks)

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