Tato's Final Exam 100
Plumbing Knowledge Assessment
Test your plumbing expertise with our comprehensive quiz designed for professionals and enthusiasts alike. This quiz covers a variety of topics related to plumbing codes, installation practices, and safety standards.
Join us to:
- Challenge your knowledge
- Prepare for certification exams
- Enhance your professional skills
A vent connector which is a part of a gravity-type venting system serving as a gas water heater must have a rise of not less than:
1" per foot
3/4" per foot
1/4" per foot
1 1/2" per foot
ABS-DWV pipe installed in the horizontal position shall have hangers supports installed every ___ feet.
4
6
8
10
Copper tubing marked with a blue stripe is:
Type K
Type L
Type M
Type DWV
Water supply piping shall be designed on the basis of the:
Minimum pressure available
Average pressure available
Maximum pressure available
Working pressure of fixtures and equipment to be served
The maximum number of public use 1.6 GPF gravity tank water closets permitted to be vented by a 2" vent pipe is:
2
4
6
8
A plumbing vent shall terminate with reference to private property lines at least:
12' above
3' away
5' away if next to a driveway
At the property line
The slope of a gravity sewer is usually measured in inches per foot or in percent; a sewer with 1/4" per foot fall has approximately what percentage slope?
1% slope
2% slope
3% slope
4% slope
Plumbing vents shall terminate at least how far from any opening into a building?
6'
8'
10'
12'
Floor Type and wall hung type "trough" urinals _____
Shall be prohibited
Shall use an automatic flushing device
Are not allowed in a residence
Shall have an average of 1.0 gal. Per flush
The acceptable fitting for connecting a horizontal drain line with with another horizontal drain line is a ___ _.
Sanitary tee
Side inlet 1/4 bend
Cross tee
Combination wye & 1/8 bend
When a flushometer valve is installed on a water closet or urinal it shall be equipped with:
An approved vacuum breaker
A reduced pressure backflow prevention
A pressure vacuum breaker
Any vacuum breaker
The maximum permitted offset on a section of 4" type B water heater gravity vent is ___
1/2 in) per ft.
1 in) per ft.
60 degrees from the vertical
75 degrees from the vertical
Which one of the following is not permitted in making up a screwed pipe joint?
Cleaning the threads with wire brush
Blowing compressed air through the pipe
Applying "pipe dope" to the female threads
Leaving a few male threads exposed after screwing the ends together
The critical level on a flush tank ball-cock shall be at least:
1/4" above the full opening of the tank overflow tube
1/2" above the full opening of the tank overflow tube
1" above the full opening of the tank overflow tube
1 1/2" above the full opening of the tank overflow tube
A pressure regulator is required when the water is in excess of
100 P.s.i
80 P.s.i.
125 P.s.i.
150 P.s.i.
Vertical wet venting is permitted for:
Commercial or industrial applications
Single story
All occupancies
Identical fixtures back to back only
Combination waste and vent systems shall be permitted.
In private residences only
Where line sizes are designed two sizes smaller than conventional systems
Where fixtures are adjacent to walls or partitions
Where structural conditions preclude the installation of conventional systems as prescribed by the code
The maximum temperature at which water may be discharged under pressure into a drainage systerm is:
120 F
140 F
180 F
200 F
The minimum distance below the surface of the ground that non-metallic house sewers must be placed is:
6"
1'
2'
3'
The pipe fitting used to connect a 1 1/4" pipe directly to a 1" pipe is called a:
Union
Sleeve
Elbow
Reducer
The size of the supply piping outlet for any gas appliance shall not be less than:
1/8" I.P.S.
1/4" I.P.S.
3/8" I.P.S.
1/2" I.P.S.
The purpose of the Diaphram bypass orifice in a flushometer valve is to:
Create the length of the flushing cycle
Equalize pressure on the inlet and discharge sides of the valve
Increase the wash-out effect
Reduce the drop in pressure of the supply lines
All gas equipment shall have an accessible, approved manual shut-off valve, installed within how many feet of the equipment it serves:
2 ft.
3 ft.
6 ft.
10 ft.
The minimum air pressure required when testing welded gas piping is:
10 P.s.i.
15 P.s.i.
60 P.s.i.
1 1/2 times the proposed maximum working pressure, but not less than 3 psi
A gallon of water weights approximately:
6 1/2 lbs
8 1/3 lbs
7 3/4 lbs
10 lbs
What is the developed length from the meter to the farthest outlet?
83'
90'
95'
97'
What is the total cubic feet per hour demand on the system?
467
590
631
613
The size of the gas pipe at Point 78 is:
1"
1 1/4"
2"
2 1/2"
The size of the gas pipe at Point 79 is:
1"
1 1/4"
1 1/2"
2"
The size of the gas pipe at Point 80 is:
1/2"
3/4"
1"
1 1/4"
What is the cubic feet per hour demand at Point 81?
71
73
78
80
What is the cubic feet per hour demand at Point 82?
45
50
55
60
What is the cubic feet per hour demand at Point 83?
99
127
136
150
The size of the gas pipe at Point 84 is:
1/2"
3/4"
1"
1 1/4"
The size of the gas pipe at Point 85 is:
1/2"
3/4"
1"
1 1/4"
The size of the gas pipe at Point 86 is:
1/2"
3/4"
1"
1 1/4"
The size of the gas pipe at Point 87 is:
1/2"
3/4"
1"
1 1/4"
The size of the gas pipe at Point 88 is:
1"
1 1/4"
1 1/2"
2"
The size of the gas pipe at Point 89 is:
1/2"
1"
3/4"
1 1/4"
The size of the gas pipe at Point 90 is:
1/2"
3/4"
1"
1 1/4"
The size of the gas pipe at Point 91 is:
1/2"
3/4"
1"
1 1/4"
What is the cubic feet per hour demand at point 92?
16
21
36
40
The size of the gas pipe at Point 93 is:
1/2"
3/4"
1"
1 1/4"
What is the cubic feet per hour demand at point 94?
15
22
32
35
What is the cubic feet per hour demand at point 95?
23
25
33
45
The size of the gas pipe at point 96 is:
1/2"
3/4"
1"
1 1/4"
What is the cubic feet per hour demand at point 97?
199
218
240
279
What is the cubic feet per hour demand at point 98?
32
45
40
36
The size of the gas pipe at point 99 is:
1/2"
3/4"
1"
1 1/4"
What is the cubic feet per hour demand at point 100?
32
35
40
45
What is the total number of fixture units on the system?
20
21
29
31
The waste line at point 27 is required to be:
2"
2 1/2"
3"
4"
The waste line at point 28 is required to be:
2"
2 1/2"
3"
4"
The waste line at point 29 is required to be:
2"
2 1/2"
3"
4"
The waste line at point 30 is required to be:
2"
2 1/2"
3"
4"
The Vent line at point 31 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The Vent line at point 32 is required to be:
1 1/4"
1 1/2"
2"
3"
The waste line at point 33 is required to be:
1 1/4"
2"
1 1/2"
3"
The Vent line at point 34 is required to be:
1 1/4"
1 1/2"
2"
3"
How many waste fixture units are required at point 35?
1
2
3
4
The Vent line at point 36 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
How many fixture units are required at point 37?
5
10
11
13
The Vent line at point 38 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The Vent line at point 39 is required to be:
1 1/2"
2"
2 1/2"
3"
The waste line at point 40 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The Vent line at point 41 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The trap arm at point 42 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The waste line at point 43 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The Vent line at point 44 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
How many fixture units are required at point 45?
2
3
4
6
How many fixture units are required at point 46?
1
2
3
4
The Vent line at point 47 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
How many fixture units are required at point 48?
1
2
3
4
The Vent line at point 49 is required to be:
1 1/4"
1 1/2"
2"
2 1/2"
The Vent line at point 50 is required to be:
1 1/2"
2"
3"
4"
What is the developed length from the meter to most remote outlet?
116'
120'
144'
133'
What is the total number of fixture units on the system at point 54?
24
46
42.5
68
What is the required water meter size at point 53?
1"
1 1/4"
1 1/2"
2"
The size of the cold water line at point 54 is required to be:
1"
1 1/4"
1 1/2"
2"
The size of the cold water line at point 55 is required to be:
1/2"
3/4"
1"
1 1/4"
How many fixture units are required at point 56?
2.5
2
3
5
How many fixture units are required at point 57?
1
2
3
4
How many fixture units are required at point 58?
2.5
4
5
6
The size of the cold water line at point 60 is required to be:
1/2"
3/4"
1"
1 1/4"
The size of the cold water line at point 61 is required to be:
1/2"
3/4"
1"
1 1/4"
How many fixture units are required at point 62?
1.5
2
3
4
How many fixture units are required at point 63?
1
2
3
4
The size of the cold water line at point 64 is required to be:
1/2"
3/4"
1"
1 1/4"
The size of the cold water line at point 65 is required to be:
1/2"
3/4"
1"
1 1/4"
The size of the hot water line at point 66 is required to be:
1/2"
3/4"
1"
1 1/4"
The size of the hot water line at point 67 is required to be:
1/2"
3/4"
1"
1 1/4"
The size of the hot water line at point 68 is required to be:
1/2"
3/4"
1"
1 1/4"
How many fixture units are required at point 69?
4
8
16
24
The size of the cold water line at point 70 is required to be:
1/2"
3/4"
1"
1 1/4"
The size of the cold water line at point 71 is required to be:
1/2"
3/4"
1"
1 1/4"
What is the total hot water fixture unit demand?
4
6
8
11
How many fixture units are required at point 73?
1
1.5
3
4
The size of the cold water line at point 74 is required to be:
1/2"
3/4"
1"
1 1/4"
How many fixture units are required at point 75?
1
2
3
4
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