IP review #3 Flashcards
1
Q
- A potato peeler is supplied with water by which method?
a. Over-rim cold water supply
b. Below-rim cold water supply
c. Over-rim hot water supply
d. Below-rim cold water supply
A
a. Over-rim cold water supply
- requires an air gap
2
Q
- A nominally–vertical pipe is one which is installed at an angle of:
a. 45° with the vertical
b. 45° with the horizontal
c. More than 45° with the horizontal
d. All of the above
A
d. All of the above
3
Q
- The maximum permitted length of a fixture outlet pipe is:
a. 600 mm
b. 750mm
c. 900 mm
d. 1200 mm
A
d. 1200 mm
4
Q
- Which of the following statements is true?
a. All traps (other than a water closet) must have a clean out at the lowest part or must be removable
b. Lavatories, sinks and laundry trays shall have a clean out at the lowest part of the trap or it shall be removable
c. Drum traps may never be used
d. Bell traps are permitted in drainage systems if used in conjunction with an interceptor
A
b. Lavatories, sinks and laundry trays shall have a clean out at the lowest part of the trap or it shall be removable
5
Q
- The minimum permits will create on a 2 inch trap arm is:
a. 1/8” per foot (1 in 100)
b. 1/4” per foot (1 in 50)
c. one pipe diameter
d. two pipe diameter
A
b. 1/4” per foot (1 in 50)
6
Q
- The minimum permissible length of a 2 inch trap arm is:
a. 2” (50 mm)
b. 4” (100 mm)
c. 6” (150 mm)
d. there is no minimum length
A
b. 4” (100 mm)
2x diameter of the pipe
7
Q
- The outside water, sanitary and storm drain piping is shown on the:
a. site plan
b. cross section
c. basement plan
d. structural plan
A
a. site plan
8
Q
- Measurements for floor heights and drop ceilings, for rough-in purposes, are taken from the building:
a. floor plan
b. front elevation plan
c. cross-sectional elevation plan
d. specifications
A
c. Cross-sectional elevation plan
9
Q
- Which of the following test may be used on a completed job to test the fixture settings?
a. water test
b. air test
c. vacuum test
d. final test
A
d. final test
10
Q
- The trap seal ensures that:
a. Pipes will be self scouring
b. Waste water will not flow back into the fixture
c. Sewage will mix with water before entering the drainage system
d. Sewer gases will not enter the room
A
d. Sewer gases will not enter the room
11
Q
- The purpose of a trap primer is to:
a. Test the back pressure in the stack
b. Prevent syphoning out of the trap
c. Add water to the trap
d. Equalize the air pressure on both sides of a trap
A
c. Add water to the trap
12
Q
- The outlet of fixture taps must be above the flood rim level rim of the fixture to:
a. Prevent a cross connection
b. Prevent syphoning out of the trap
c. Prevent water hammer in the system
d. Aerate the water leaving the faucet
A
a. Prevent a cross connection
13
Q
- An 8 inch building train with a maximum load of 1700 fixture units must be laid with a minimum grade per foot of:
a. 1/16” (1 in 200)
b. 1/8” (1 in 100)
c. 1/4” (1 in 50)
d. 1/2” (1 in 25)
A
c. 1/4” (1 in 50)
14
Q
- The maximum number of fixture units that can drain into a 3 inch soil or waste stack from one story and a five storey building is:
a. 18
b. 20
c. 30
d. 60
A
a. 18
15
Q
- The minimum size of stack vent required for a 4 inch soil or waste stack carrying 90 fixture units, and the length of the stack vent is 10.68m is:
a. 4”
b. 3”
c. 2 1/2”
d. 2”
A
b.3”
16
Q
- The TY required for the connection of the 1 1/4” trap arm to the wet vent from a water closet would be:
a. 1 1/2” x 1 1/2” x 1 1/4”
b. 1 1/2” x 1 1/4” x 1 1/2”
c. 2” x 2” x 1 1/4”
d. 2” x 1 1/2” x 1 1/4”
A
d. 2” x 1 1/2” x 1 1/4”
branch size is last
17
Q
- The maximum cumulative change in direction on a trap arm serving a basin is:
a. 45°
b. 90°
c. 135°
d. 225°
A
c. 135°
18
Q
- Drainage lines from refrigerators and other food containers should be:
a. Connected directly to the drainage system
b. Connected with no siphon and traps
c. Trapped and discharged through an indirect connection
d. Connected to a grease interceptor
A
c. Trapped and discharged through an indirect connection
19
Q
- Which of the following has no thread “makeup”?
a. a malleable iron coupling
b. a flanged union
c. a ground face union
d. a reducing coupling
A
b. a flanged union
20
Q
- What is the distance from the finished floor to the pipe invert?
a. 399.50’
b. 3.25’
c. 2’
d. 0.75’
A
b. 3.25’
60’ x 1/4” per foot = 1.25
- 25 + 1.25 = 401.75
- 75 - 398.5 = 3.25’
21
Q
- The minimum temperature required in the water supply to a commercial dishwasher, to bacteria kill is:
a. 77°C
b. 82°C
c. 96°C
d. 100°C
A
b. 82°C
(180-32) / 1.8 = 82.2 C
180 F
22
Q
- When water runs continually into the overflow tube in the water closet tank, the fault is likely in the:
a. trip lever linkage
b. lift wire or guide
c. flapper
d. ballcock valve
A
d. ballcock valve
23
Q
- Which of the following traps are not permitted?
a. a trap with a trap seal depth less than 100 mm
b. a drum trap
c. a “P” trap
d. a bell trap
A
d. a bell trap
24
Q
- An oil interceptor requires:
a. no vent
b. one vents
c. two vents
d. three vents
A
c. two vents
25
Q
- The minimum size of a supply pipe to a lavatory shall not be less than:
a. 1/2”
b/ 3/8” ID
c. 6 mm OD
d. 6 mm ID
A
b/ 3/8” ID
26
Q
- A tank pan installed under a hot water storage tank shall have sides walls not less than:
a. 15mm
b. 20mm
c. 25mm
d. 30mm
A
c. 25mm
27
Q
- The type of connection between the relief valve discharge of a hot water storage heater and the tank pan drain would be called a(n):
a. local vent
b. continuous waste
c. continuous vent
d. air break
A
d. air break
28
Q
- What is the max total fall allowed on a trap arm serving a commercial garbage grinder?
a. 1”
b. 2”
c. 3”
d. 4”
A
b. 2”
29
Q
- Yoke vents are required in some cases where:
a. A soil-or-waste stack receives the discharge from fixtures located on more than 4 storeys
b. A soil-or-waste stack receives the discharge from fixtures located on more than 5 storeys
c. A soil-or-waste stack receives the discharge from fixtures located on more than 10 storeys
d. A soil-or-waste stack receives the discharge from fixtures located on more than 11 storeys
A
d. A soil-or-waste stack receives the discharge from fixtures located on more than 11 storeys
30
Q
- Vent stacks are required where:
a. A soil-or-waste stack receives the discharge from fixtures located on more than 4 storeys
b. A soil-or-waste stack receives the discharge from fixtures located on more than 5 storeys
c. A soil-or-waste stack receives the discharge from fixtures located on more than 10 storeys
d. A soil-or-waste stack receives the discharge from fixtures located on more than 11 storeys
A
a. A soil-or-waste stack receives the discharge from fixtures located on more than 4 storeys
31
Q
- What is the max number of 90 degree bends which may be used on the trap arm from a water closet?
a. one
b. two
c. three
d. 90s may not be used
A
b. two
2 90s and a 45
225 degrees of change
32
Q
- The minimum size of a yoke vent, used in conjunction with a vent stack, shall not be less than:
a. the soil-or-waste stack
b. the vent stack
c. the smallest pipe to which it is connected
d. none of the above
A
d. none of the above
one size smaller than the smallest pipe
33
Q
- According to the National Plumbing Code, a given number of fixture units are allowed to drain to the lower end of a vent stack. The maximum hydraulic load is:
a. 1 1/2 FUs
b. 2 1/2 FUs
c. 3 FUs
d. 8 FUs
A
d. 8 FUs
34
Q
- The downstream end of a P-trap may be connected to the trap arm by:
a. a running thread
b. a union with a gasket seal
c. a slip joint
d. a lock nut
A
c. a slip joint
35
Q
- During the installation of a venting system using DWV copper tube, it becomes necessary to offset around a column. This may be accomplished by:
a. bending the tube using an approved bender
b. changing the location of the piping
c. drilling a hole through the beam or column
d. offsetting using approved fittings
A
d. offsetting using approved fittings
36
Q
- The total fall on a 130 m horizontal drain installed at 1:50 grade would be:
a. .167 m
b. 1.3 m
c. 2.6 m
d. 3m
A
c. 2.6 m
37
Q
- In reference to a hot water heating system, the type of air vent required to be used on an inaccessible main would be:
a. a ball vent
b. a coin vent
c. a float vent
d. a manual vent
A
c. a float vent
38
Q
- A hydromassage tub has which of the following?
a. a 2” trap
b. jets from above the water line
c. correctly sized supply lines
d. one vacuum breaker
A
b. jets from above the water line
39
Q
- This backflow preventer is designed for high hazard applications:
a. DCVA
b. RPBA
c. PVBA
d. AVB
A
b. RPBA
40
Q
- The type of copper most used in a residential hot water heating system is:
a. type “L”
b. type “K”
c. type “M”
d. type “H”
A
c. type “M”
red
41
Q
- The type of copper tube found in the radiation of a hot water heating system is:
a. type “L”
b. type “K”
c. type “M”
d. type “H”
A
d. type “H”
white
42
Q
- The length of a standard pipe wrench is measured between:
a. the outside of the hook jaw and the end of the handle
b. the inside of the hook jaw and the end of the handle
c. face of the heel jaw and the end of the handle
d. inside of the hook jaw to the end of the handle when fully open
A
c. face of the heel jaw and the end of the handle
43
Q
- To prevent overflow in a sink that is not fitted with an integral overflow, it is accepted to use a(n):
a. standing waste
b. float valve
c. automatic siphon
d. supply regulator
A
a. standing waste
44
Q
- The valve symbol pictured above is:
a. a screwed angle globe valve
b. a flanged angle globe valve
c. a soldered angle globe vlave
d. a screwed angle gate valve
A
a. a screwed angle globe valve
45
Q
- The valve symbol pictured above is a screwed:
a. vertical swing check valve
b. horizontal swing check valve
c. horizontal flow control valve
d. horizontal ball check valve
A
b. horizontal swing check valve
46
Q
- The valve symbol pictured above is a flanged:
a. ball valve
b. safety valve
c. pressure reducing valve
d. pressure relief valve
A
c. pressure reducing valve
47
Q
- The two fitting symbols shown above are:
a. couplings
b. a screwed union
c. a flanged union
d. both a and c
A
d. both a and c
48
Q
- In which of the following locations would a slip joint not be permitted?
a. anywhere on the venting system
b. on the inlet to a trap
c. to connect a trap arm to a trap
d. on the fixture outlet of a 3-compartment sink
A
a. anywhere on the venting system
49
Q
- When wet venting a WC through a lav, the wet vented portion must be:
a. 1 1/4”
b. 1 1/2”
c. 2”
d. 3”
A
c. 2”
50
Q
- What is the max length of a 1 1/4” continuous vent?
a. 4m
b. 7m
c. 9m
d. no maximum
A
c. 9m
51
Q
- The max number of fixture units which may drain from a 2” SOWS?
a. 6
b. 8
c. 18
d. 24
A
d. 24
52
Q
- The max number of fixture units which may drain from any one floor in a 2” SOWS?
a. 6
b. 8
c. 18
d. 24
A
a. 6
53
Q
- The max number of WC which may drain to a 3” SOWS?
a. 2
b. 4
c. 6
d. 8
A
c. 6
54
Q
- What is the minimum distance a vent may terminate from a property line, other than a property line adjacent to a street?
a. 1 m
b. 1.8 m
c. 2 m
d. 3.5 m
A
b. 1.8 m
55
Q
- When indirect wastes connect fixtures on three or more storeys, they must:
a. be vented into the main stack
b. have a vent that terminates separately
c. have an air gap of at least 1 pipe diameter
d. have an air gap of at least 2 pipe diameter
A
b. have a vent that terminates separately
56
Q
- To size a vent other than an individual or dual vent, the following info must be used:
a. size of the traps being served
b. total number of fixture units
c. length of vent
d. all of the above
A
d. all of the above
57
Q
- What is the minimum permissible length of a trap arm serving a vented 3” floor basin:
a. 3 “ (75mm)
b. 6” (150mm)
c. 18” (450mm)
d. none of the above
A
b. 6” (150mm)
58
Q
- Give the measurement of pipe “A” to “B” using 45 degree fittings (assuming an equal spread offset).
a. 22.97”
b. 76”
c. 77.52”
d. 80”
A
c. 77.52”
tan22. 5 x 6
59
Q
- How many fixture units is a “lip” wall hung urinal with a 2” integral trap?
a. 1.5
b. 2
c. 3
d. 4
A
c. 3
60
Q
- An invert elevation would be an elevation at:
a. the bottom underside of the pipe
b. the upper inside of the pipe
c. the top outside of the pipe
d. the bottom inside of the pipe
A
d. the bottom inside of the pipe
61
Q
- The max allowable cumulative change in direction on a trap arm for a fixture other than one that operates using siphonic action is:
a. 45 degrees
b. 90 degrees
c. 135 degrees
d. 225 degrees
A
c. 135 degrees
62
Q
- The max distance allowed from the trap to the vent is measured from:
a. centre of fixture outlet pipe to centre of vent
b. trap weir to the vent fitting
c. trap dip to centre of vent
d. centre of fixture outlet pipe to vent fitting
A
b. trap weir to the vent fitting
63
Q
- A stack vent is:
a. the continuation of the SOWS above the highest fixture
b. the continuation of the SOWS above the highest fixture connected on the furthest stack from the building sewer serving one or more WC’s
c. the continuation of the SOWS above a wet-vented fixture
d. the continuation of the main vent above the lowest fixture connected
A
a. the continuation of the SOWS above the highest fixture
64
Q
- The valve shown above are all:
a. flanged globe valve
b. straight globe valve
c. straight gate valves
d. straight ball valves
A
b. straight globe valve
65
Q
- The valve shown are all:
a. flanged safety valves
b. soldered safety valves
c. straight safety valves
d. straight fire valves
A
c. straight safety valves
66
Q
- The valve shown are all:
a. flanged gate valves
b. flanged globe valves
c. flanged ball valves
d. straight gate valves
A
d. straight gate valves
67
Q
- The two fittings shown are:
a. a plan view of a flanged gate valves
b. flanged reducing couplings
c. funnel fittings
d. welded reducing couplings
A
b. flanged reducing couplings
68
Q
- What is the minimum permissible arm length for an unvented 3” floor drain?
a. 3” (75mm)
b. 6” (150mm)
c. 18” (450mm)
d. none of the above
A
c. 18” (450mm)
69
Q
- A drainage system that does not drain by gravity to the building sewer is:
a. a force main
b. a subsoil drainage system
c. a subdrainage system
d. a pumped discharge
A
c. a subdrainage system
70
Q
- Which of the following is the correct system to drain a transformer vault?
a. directly to a sanitary drainage system
b. directly to a storm drainage system
c. directly to a combined drainage system
d. none of the above
A
d. none of the above
71
Q
- Which of the following may be unvented?
a. any floor drain in a washroom
b. any floor drain provided the trap arm is neither too long nor too short and there is not too much grade
c. a floor drain; 3” or larger; trap arm length not longer than 450mm; less grade than diameter of trap arm
d. a floor drain 3” or larger, trap arm length at least 450mm, less grade than the diameter of the trap arm
A
d. a floor drain 3” or larger, trap arm length at least 450mm, less grade than the diameter of the trap arm
72
Q
- What is the minimum horizontal distance that a vent may terminate from an opening window?
a. 1 m
b. 1.8 m
c. 2 m
d. 3.5 m
A
d. 3.5 m
73
Q
- Which of the following is a result of negative pressure?
a. backpressure
b. reverse drainage
c. backsiphonage
d. backspillage
A
c. backsiphonage
74
Q
- When converted, 300 fixture units becomes:
a. 900 L
b. 2730 L
c. 3000 L
d. 7380 L
A
b. 2730 L
300 x 9.1
75
Q
- What is the max load that may be put onto a 4” wet vent?
a. 4 FU
b. 6 FU
c. 14 FU
d. 36 FU
A
d. 36 FU
76
Q
- The purpose of a yoke vent is to:
a. vent the SOWS
b. vent the vent stack
c. maintain equal pressure between the vent stack and the SOWS
d. relieve pressure at the base of the SOWS
A
c. maintain equal pressure between the vent stack and the SOWS
77
Q
- Variations of pressure in a drainage system should not exceed:
a. 14.74 psi
b. .433 psi
c. 1” mercury column
d. 1” water column
A
d. 1” water column
78
Q
- What is the minimum distance that a flow meter should be installed upstream of a fitting?
a. as close as possible
b. 5 pipe diameters
c. 10 pipe diameters
d. all of the above
A
b. 5 pipe diameters
79
Q
- What would cause a flux to be “charred”?
a. underheating
b. overheating
c. slow heating
d. too much flux
A
b. overheating
80
Q
- A pipe has an ID of 12” and a W.T of 3/8”. If 1” of insulation is to be installed on the pipe, what would be the ID of a permanent sleeve if the job specifications require 1” clearance outside the insulation?
a. 12 3/4”
b. 14 3/8”
c. 16 3/4”
d. 20”
A
c. 16 3/4”
81
Q
- The line pictured represents:
a. a hot water line
b. a cold water line
c. a return hot water line
d. a hidden line
A
b. a cold water line
82
Q
- The line pictured represents:
a. a cold water line
b. a hot water line
c. a return hot water line
d. a vent line
A
b. a hot water line
83
Q
- In addition to the dials for reading a water meter, the meter has another dial commonly called a test dial. What is its purpose?
a. to check for leaks
b. to test the water consumption of the fixtures
c. to measure velocity
d. both a and b
A
d. both a and b
84
Q
- Which of the following best describes the regulation of the length of time for a piston or diaphragm flush valve to effect a flush?
a. size of the orifice
b. length of the valve stem
c. discharge pressure
d. length of the flush handle
A
a. size of the orifice
85
Q
- Select the plan view from the iso drawing
a. A
b. B
c. C
d. D
A
c. C
86
Q
- If a 1” pipe is supplying water to a tank installed with the pipe 6” from the edge of the fixture, what would be the minimum air gap?
a. 1”
b. 2”
c. 3”
d. 6”
A
b. 2”
87
Q
- What is the minimum permitted final rinse temperature on a commercial dishwasher?
a. 212 degree F
b. 180 degree F
c. 160 degree F
d. 100 degree F
A
b. 180 degree F
88
Q
- What type of valve is normally used between a water softener and a water heater to prevent reverse flow?
a. globe
b. gate
c. check
d. PRV
A
c. check
89
Q
- What is the max permitted change of direction between a clean out and the piping it serves?
a. 22 1/2 degrees
b. 45 degrees
c. 90 degrees
d. no max
A
b. 45 degrees
90
Q
- What is the minimum distance a vent pipe shall terminate above a roof?
a. 1” (25mm)
b. 6” (150mm)
c. 10” (250mm)
d. 12” (300mm)
A
b. 6” (150mm)
91
Q
- What is the minimum distance any vent (other than a F.A.I.) may terminate above ground?
a. 1 m
b. 2 m
c. 3 m
d. 3.5 m
A
b. 2 m
92
Q
- What is the minimum distance a vent may terminate above an opening door or window, or an air inlet if the vent is too close horizontally?
a. 150mm
b. 300mm
c. 1m
d. 2m
A
c. 1m
93
Q
- When the centreline of the outlet of a wall hung toilet is 5 1/4” above the finished floor, it is roughed in for a:
a. reverse trap bowl
b. blowout bowl
c. sipohon jet bowl
d. washdown bowl
A
b. blowout bowl
94
Q
- The part of a drainage system that cannot drain by gravity into the building sewer is called a(n):
a. anti-gravity
b. sub-storm drain
c. building subdrain
d. building anti-subdrain
A
c. building subdrain
95
Q
- A drain line 1m outside a building which is intended to convey both sewage and storm water is called a:
a. sand and storm drain
b, combined building drain
c. combined waste and drain system
d. combined building sewer
A
d. combined building sewer
96
Q
- Developed length means:
a. any pipe that is longer than 2 feet
b. the length along the centreline of the pipe and fittings
c. the nominal diameter measured around the circumference
d. the horizontal length including the vertical drop
A
b. the length along the centreline of the pipe and fittings
97
Q
- A vent taken off a battery of 8” WC from the fixture drain of the most upstream fixture is called:
a. a continuous vent
b. a circuit vent
c. a loop vent
d. a stack vent
A
b. a circuit vent
98
Q
- Directly connected means:
a. a gas tight joint
b. a water tight joint
c. an air tight joint
d. all of the above
A
d. all of the above
99
Q
- A fixture drain is defined as:
a. a pipe connecting a trap to some other part of a drainage system
b. a pipe that connects the waste opening of the fixture to the trap
c. a pipe that connects the trap to a vent
d. a pipe that connects a horizontal branch to a vent
A
a. a pipe connecting a trap to some other part of a drainage system
100
Q
- When relating piping terminology to a triangle, the term “run” for the reference angle would be:
a. the hypotenuse
b. the side opposite
c. the side adjacent
d. the travel
A
c. the side adjacent
101
Q
- Which of the following must be indirectly connected?
a. a dental cuspidor
b. a sterilizer
c. a drinking fountain
d. all of the above
A
b. a sterilizer
102
Q
- Which of the following must drain to the sanitary drainage system?
a. a sterilizer
b. a drinking fountain
c. a water treatment device
d. none of the above
A
a. a sterilizer
103
Q
- Which of the following may be drained to a storm drainage system?
a. a flood display case
b. a sterilizer
c. a transformer vault drain
d. a drinking fountain
A
d. a drinking fountain
104
Q
- Select the front elevation for the iso drawing shown:
a. A
b. B
c. C
d. D
A
b. B
105
Q
- Which of the following would not be permitted:
a. A drinking fountain indirectly connected
b. a drinking fountain to the storm system
c. a drinking fountain with no trap
d. a drinking fountain to the sanitary system
A
c. a drinking fountain with no trap
106
Q
- Which of the following must not be installed upstream of a grease interceptor:
a. a pot sink
b. a potato peeler
c. a dishwasher
d. an unvented cleanout floor drain
A
b. a potato peeler
107
Q
- What would the minimum size of cleanout be for a 4” branch
a. 3”
b. 4”
c. any size
d. no cleanout required
A
a. 3”
108
Q
- An expansion tank for a hot water heating system should be able to accommodate what extra percentage of volume for expansion of water?
a. 2%
b. 3%
c. 4%
d. 5%
A
b. 3%
109
Q
- A mop service sink should be equipped with:
a. integral stops
b, a vacuum breaker
c. a wall bracket
d. all of the above
A
d. all of the above
110
Q
- The approx height of a “barrier-free” toilet to the top of the seat is:
a. 12”
b. 15”
c. 18”
d. 21”
A
c. 18”
111
Q
- A ‘lanyard” or safety line:
a. should attach to the back of the harness
b. should attach to the front of the harness
c. should attach to the side of the harness
d. is only required if over 20’ above grade
A
a. should attach to the back of the harness
112
Q
- When using a powder actuated tool, the intended surface cannot be scratched with a nail. The proper reaction is to:
a. load and fire the heaviest charge
b. not fire into the material
c. start with the lightest load and fire several test shots
d. get someone else to fire the load
A
b. not fire into the material
113
Q
- A header is a pipe designed to:
a. connect the tops of two or more stack vents or vent stacks
c. connect two or more vents into a stack vent, vent stack or terminate them in open air
c. connect the tops of vents and terminate them in open air
d. connect at its lower end to a branch and at its upper end to a stack vent or vent stack
A
a. connect the tops of two or more stack vents or vent stacks
114
Q
- A pipe that is connected at its bottom end to a fixture drain and serves a number of fixtures is called a:
a. continuous vent
b. circuit vent
c. stack vent
d. branch vent
A
b. circuit vent
115
Q
- The type of heating system most likely to be used in an apartment building would be a:
a. monoflow and reverse return
b. perimeter loop and reverse return
c. direct return
d. reverse return
A
d. reverse return
116
Q
- The most upstream valve on a water service is the:
a. corporation curb stop
b. curb cock
c. stop cock
d. compression stop-and-drain
A
a. corporation curb stop
117
Q
- The type of valve used to even out the distribution on a split-zone heating system is a:
a. ball cock
b. check valve
c. control valve
d. balancing valve
A
d. balancing valve
118
Q
- The volume of a cylinder is 45,000 cubic inches and its diameter is 30”. What would be its height:
a. 4.91
b. 5.31
c. 6.25
d. 26.04
A
b. 5.31
119
Q
- To protect a dishwasher from what hammer, a:
a. check valve is used
b. shock stop is used
c. backflow preventer is used
d. pressure reducing valve is used
A
b. shock stop is used
120
Q
- A grade of 1:200 is approx. _____ inches/foot grade and exactly ____ grade:
a. 1/8 - 1%
b. 1/4 - 2%
c. 1/16 - 0.5%
d. 1/2 - 4$
A
c. 1/16 - 0.5%
121
Q
- 3 categories of cross connection hazards are:
a. low, medium, severe
b. severe, moderate, minor
c. unhealthy, healthy and potable
d. high, moderate and low
A
b. severe, moderate, minor
122
Q
- What is the max permissible length of a fixture outlet pipe when a grease interceptor is used as a trap?
a. 100mm
b. 450mm
c. 900mm
d. 1200mm
A
d. 1200mm
123
Q
- What is the max permissible length of a fixture outlet pipe installed at 49 F and operating at 180 F (C.O.E. for steel is 0.0000067)
a. .2633 inches
b. 2.6 inches
c. 3.15 inches
d. 4.21 inches
A
c. 3.15 inches
124
Q
- Which of the following is the steepest slope?
a. 30 cm per 30 m
b. 2%
c. 1:50
d. 1/4” per foot
A
d. 1/4” per foot
125
Q
- Which is the accepted method of retaining a benchmark in a concrete slab?
a. a brass plug
b. a centre punch
c. a chalk mark
d. crossed chalk line
A
a. a brass plug
126
Q
- Which type of copper tube is only produced as hard drawn type:
a. type K
b. type L
c. type M
d. type DWV
A
d. type DWV
127
Q
- The type of copper tubing recommended for all general plumbing work areL
a. type K and L hard
b. type E, P hard
c. type M, L soft
d. type DWV, hard and soft
A
a. type K and L hard
128
Q
- the height of the instrument between shots 1 and 2 is:
a. 109.300
b. 100.666
c. 99.435
d. 91.67
A
c. 99.435
129
Q
- The shot at number 2 is:
a. a foresight of 5.125
b. a foresight of 5.135
c. a back sight of 5.125
d. a back sight of 5.135
A
a. a foresight of 5.125
130
Q
- the elevation point at point “A” is:
a. 4.125
b. 94.31
c. 94.875
d. 104.125
A
b. 94.31
131
Q
- The height of the instrument between shots number 3 and 4 is:
a. 97.535
b. 2.315
c. 3.065
d. 96.625
A
d. 96.625
132
Q
- The elevation at point “B” is:
a. 3.065
b. 93.935
c. 96.935
d. 103.065
A
b. 93.935
133
Q
- The type of copper tubing not permitted for vents and drain lines is:
a. hard drawn Type L
b. soft drawn Types K and L
c. hard drawn Type M
d. type DWV
A
b. soft drawn Types K and L
134
Q
- To hold a piece of machinery to a concrete floor, a plumbing would use:
a. a plastic plug
b. a “U” bolt
c. an expansion shield and bolt
d. a toggle bolt
A
c. an expansion shield and bolt
135
Q
- An end switch is a component of which type of heating control?
a. zone valve
b. aquastat
c. thermostat
d. mixing valve
A
a. zone valve
136
Q
- An aquastat measures:
a. air temperature
b. water pressure
c. water temperature
d. air pressure
A
c. water temperature
137
Q
- If there is a vent on the flow control fitting, where should this vent terminate?
a. tee it back to the general venting system
b. plug the fitting
c. to outside air independently
d. to above the flood level rim of the highest fixture
A
a. tee it back to the general venting system
138
Q
- What is the minimum permissible seal depth for an interceptor used as a trap?
a. 1 1/4”
b. 1 1/2”
c. 2”
d. the diameter of the inlet to the interceptor
A
b. 1 1/2”
139
Q
- What is the max distance that an approved interceptor may be installed from the fixture outlet that it serves, if the interceptor is to serve as the fixture’s trap?
a. 30”
b. 36”
c. 42”
d. 48”
A
d. 48”
140
Q
- The minimum size of a common trap permissible on a 3-compartment large commercial service sink is:
a. 1 1/2”
b. 2”
c. 2 1/2”
d. 3”
A
b. 2”
141
Q
- If a sanitary building sewer is installed at a grade of 3/32 inch / feet and has 402 fixture units drain into it, what is the minimum size of the pipe:
a. 4”
b. 5”
c. 6”
d. 8”
A
c. 6”
142
Q
- If a branch is install that a grade of 1/4” per foot and has 3 tank type water closets and 3 basins straining to it, what size must is be?
a. 3”
b. 4”
c. 5”
d. 6”
A
b. 4”
143
Q
- What is the minimum size of any drainage pipe permitted by the plumbing code?
a. 1 1/4”
b. 1”
c. 3/4”
d. 1/2”
A
c. 3/4”
144
Q
- The type of piping material which is not recommended for urinal waste is:
a. copper
b. galvanized steel
c. lead
d. cast iron
A
a. copper
145
Q
- For domestic pneumatic water system, the normal cut and/cut out pressures are:
a. 15/30 psi
b. 20/40 psi
c. 25/50 psi
d. 30/40 psi
A
b. 20/40 psi
146
Q
- The term “cross connection” in plumbing refers to:
a. Any connection made by the means of a cross fitting
b. Waste connection made using a double TY fitting
c. A physical connection made where any other substance may enter the potable system
d. Water pipes that are crossed over on back-to-back fixtures
A
c. A physical connection made where any other substance may enter the portable system
147
Q
- Which of the following is a true statement?
a. Acid neutralizer should be installed in an “out-of-the-way” location
b. Acid neutralizers are usually automatic in their operation and hence require little attention
c. Acid neutralizer which use marble chips or limestones must have the marble chips or limestones replaced periodically
d. There is a flow control fitting on the outlet of most acid neutralizer
A
c. Acid neutralizer which use marble chips or limestones must have the marble chips or limestones replaced periodically
148
Q
- Which of the following materials would not be suitable for a chemical waste system?
a. Silicone iron
b. Type K copper
c. Poly propylene
d. Lead
A
b. Type K copper
149
Q
- A neutralizer contains 96 US gallons in measures 3 feet long and 2 feet wide, what is its height?
a. 1’ - 1 5/8”
b. 2’ - 1 5/8”
c. 2’ - 6 3/4”
d. 2’ - 10 3/4”
A
b. 2’ - 1 5/8”
150
Q
- Which of the following must not discharge through a grease interceptor?
a. Potato peeler
b. Garbage grinder
c. Water closet
d. All of the above
A
d. All of the above
151
Q
- The name used to commonly describe a type of shower faucet that will prevent scalding of the bather is a:
a. Pressure balancing (compensating) valve
b. Quick opening valves
c. Automatic control valve
d. Quick closing valve
A
a. Pressure balancing (compensating) valve
152
Q
- When a plumber uses a toilet auger to clear a blockage in a bowl, which of the following would he do first?
a. Push the auger handle into the sheath and then direct the auger spring into the trap way
b. Flush the bowl several times to clean the bowl before using the auger
c. Pull the auger handle out of the sheath to react the auger spring, then place the gooseneck end of the sheath into the opening of the trap way
A
c. Pull the auger handle out of the sheath to react the auger spring, then place the gooseneck end of the sheath into the opening of the trap way
153
Q
- The drip line on a fire line must be installed:
a. Downstream of the check
b. Upstream of the check
c. Between the valve and the union
d. None of the above
A
b. Upstream of the check
154
Q
- When a fire line is connected to the water service, it would be connected at which of the following points?
a. Downstream of the meter
b. Downstream of the domestic water shut off
c. Upstream of the meter
d. Upstream of the backflow preventer
A
c. Upstream of the meter
155
Q
- If a 3 inch branch is 44 feet long, what is the minimum amount of total fall allowed:
a. 5 1/2”
b. 10”
c. 11”
d. 22”
A
c. 11”
156
Q
- The use of a water jacket to cool the grease interceptor is prohibited because:
a. There is danger of cross connection or backflow
b. It is important to conserve water
c. It is desirable to have effluent from its interceptor as warm as possible
d. Both A and C
A
a. There is danger of cross connection or backflow
157
Q
- When a recirculation line is needed on a domestic hot water system, the circulation of water is not helped by:
a. Water pressure in the system
b. Difference in temperature between supply and return
c. The height of the supply and return risers
d. The grade on the horizontal runs
A
a. Water pressure in the system
158
Q
- Circulating pumps on a force circulating domestic hot water system could be controlled by: (note: many circulators in these systems run continuously)
a. Thermometers
b. Pressure switches
c. Aqua stats
d. Velocity (sail) switches
A
c. Aqua stats
159
Q
- Fluctuation in pressure on a pneumatic water system whenever a faucet is opened indicates:
a. Supply lines are too small
b. Pressure switch is faulty
c. The pump delivery is below normal
d. There is not enough air in the tank
A
d. There is not enough air in the tank
160
Q
- How is copper annealed?
a. Extreme heat
b. stretching
c. dipping in a 5% acid solution
d. freezing
A
a. Extreme heat
161
Q
- Water closet in a public washroom must be:
a. Wash out – splits seat
b. wash out – closed front seat
c. Syphon jet – open front seat
d. Syphon jet – closed front seat
A
c. Syphon jet – open front seat
162
Q
- Water is the most dense at:
a. 0°C
b. 4°C
c. 32°C
d. 100°C
A
b. 4°C (39 F)
163
Q
- A cylindrical tank has a diameter of 8 feet and is 75% full of oil. Approximately how many imperial gallons of oil are there in the tank if it is 14’ high
a. 708
b. 3293
c. 4391
d. 5269
A
b. 3293
164
Q
- A piece of 2 inch pipe measures 4 feet 4 1/2 inches centre to centre with a 90° elbow on each end. What will the ant and measurement be, if the throw is 2 1/4 inch and the make up is 5/8 inch?
a. 49 inches
b. 49 1/4 inches
c. 50 1/4 inches
d. 58 5/8 inches
A
b. 49 1/4 inches
165
Q
- A rolled offset is to be made using 45° fittings. If the pipe is to roll 12 inches and the offset is 14 inches, what will the C-C length of the centre piece be?
a. 18.43 inches
b. 23.99 inches
c. 25.79 inches
d. 26.07 inches
A
d. 26.07 inches
166
Q
- The minimum size of a sump pump vent is:
a. 1 1/4”
b. 1 1/2”
c. 2”
d. 3”
A
c. 2”
167
Q
- Maximum number of toilets that may be connected to a wet vented soil or waste stack is?
a. 2
b. 4
c. 6
d. not allowed
A
a. 2
168
Q
- Location for toilets installed on a wet vented soil or waste stack is:
a. on the top floor only
b. on the lowest floor only
c. anywhere on the stack
d. they are not allowed
A
b. on the lowest floor only
169
Q
- A relief vent installed in conjunction with a circuit fan is required when:
a. more than 3 FU discharge past the connection to downstream piping
b. more than 4 FU discharge past the connection to downstream piping
c. more than 6 FU discharge past the connection to downstream piping
d. more than 8 FU discharge past the connection to downstream piping
A
c. more than 6 FU discharge past the connection to downstream piping
170
Q
- Which arrangement may allow a fixture to self siphon?
a. trap too close to vent fitting
b. vent pipe oversized
c. trap too far below fixture
d. faucet discharge directly into fixture outlet
A
a. trap too close to vent fitting
c. trap too far below fixture
171
Q
- Where does the building sewer begin?
a. one meter inside the foundation wall
b. at the base of the main stack
c. at the main building cleanout
d. one meter outside the foundation wall
A
d. one meter outside the foundation wall
172
Q
- What material is often used for the manufacturing of valve parts because of its high resistance to corrosion?
a. vitrified porcelain
b. acrylic plastic
c. polyester resin
d. brass
A
d. brass
173
Q
- What is an escutcheon?
a. Chrome-plated flange
b. pop-up plug
c. decorative faucet
d. water fountain outlet
A
a. Chrome-plated flange
174
Q
- What is the max permitted flow rate to a shower head?
a. 13.25 L/min
b. 7.6 L/min
c. 6.0 L/min
d. 2.5 L/min
A
b. 7.6 L/min
175
Q
- What fitting is used to rough-in the water supply for a shower head?
a. wing back
b. spout back
c. street tee
d. angle strap
A
a. wing back
176
Q
- What do plumbing codes define?
a. suggested guidelines for the installation of fixtures
b. minimum requirements for the installation of fixtures
c. recommended design for the installation of fixtures
d. best practices for the installation of fixtures
A
b. minimum requirements for the installation of fixtures
177
Q
- What should not be used to tighten the lock nut securing the drain plug fitting to a basin’s outlet?
a. adjustable wrench
b. pipe wrench
c. spud wrench
d. hex wrench
A
b. pipe wrench
178
Q
- Who has the “final word” regarding the acceptance of plumbing fixture installation?
a. the installer of the fixture
b. the owner of the fixture
c. the manufacturer of the fixture
d. the authority having jurisdiction
A
d. the authority having jurisdiction
179
Q
- Why should the discharge hose from a dishwasher be mounted as high as possible under the countertop before being connected to the sink drain fitting or garbage grinder?
a. to prevent backflow
b. to prevent water hammer
c. to provide for expansion
c. to permit removal and replacement
A
a. to prevent backflow
180
Q
- What is the minimum required height of a clothes washer standpipe
a. 300 mm
b. 450 mm
c. 600 mm
d. 750 mm
A
c. 600 mm
181
Q
- What is the minimum required length of copper tubing that should be installed when connecting to the top of a storage tank-type water heater?
a. 300 mm
b. 450 mm
c. 600 mm
d. 750 mm
A
b. 450 mm
182
Q
- What would a “bathroom group” consist of?
a. one lav, one WC, and one bathtub
b. one lav, one WC, and one bathtub or max one shower head
c. one lav, one WC, and one shower
d. one lav, one WC
A
b. one lav, one WC, and one bathtub or max one shower head
183
Q
- What vent serves 2 fixtures and connects at the junction of the trap arms?
a, individual vent
b. continuous vent
c. dual vent
d. branch vent
A
c. dual vent
184
Q
- What is the name for a vent that serves only one fixture?
a. individual vent
b. continuous vent
c. dual vent
d. branch vent
A
a. individual vent
185
Q
- When a drainage pipe is physically connected in such a way that water or gas cannot escape from the connection, it is said to be connected in which way?
a. air break connected
b. air gap connected
c. indirectly connected
d. directly connected
A
d. directly connected
186
Q
- What trade term is used to describe a trap for a fixture that is also used as the main support for the fixture?
a. a drum trap
b. a trap standard
c. a crown vented trap
d. a bell trap
A
b. a trap standard
187
Q
- Except for column showers, what is the minimum dimension between two adjacent shower heads?
a. 730 mm
b. 690 mm
c. 750 mm
d. 800 mm
A
c. 750 mm
188
Q
- What is the minimum trap seal depth for a lab sink that drains to an acid waste system?
a. 25mm
b. 33mm
c. 38mm
d. 50mm
A
d. 50mm
189
Q
- What is the minimum depth of lead in a cold-caulked lead drainage joint?
a. 15mm
b. 25mm
c. 50mm
d. 75mm
A
b. 25mm
190
Q
- Cold-caulked joints shall only be used in which of the following bell and spigot piping systems?
a. water systems
b. drainage systems
c. venting systems
d. any of the above
A
d. any of the above
191
Q
- When installing a lead stub during the rough-in of a WC, what type of floor flange shall be used when the toilet is set in place?
a. ABS
b. cast iron
c. lead
d. brass
A
d. brass
192
Q
- Urinals shall not be installed in which of the following areas?
a. buildings of residential occupancy
b, where the wall and floor surfaces are pervious to water
c. where there is no emergency floor drain
d. all of the above
A
b, where the wall and floor surfaces are pervious to water
193
Q
- A backwater valve, when installed in a single family dwelling building drain, shall meet which of the following requirements?
a. normally closed
b. normally open
c. larger than 4” NPS
d. Not allowed by code on a building drain of building sewer
A
b. normally open
194
Q
- During a typical DWV installation, how many tests are performed on the system?
a. 2
b. 3
c. 4
d. 5
A
b. 3
195
Q
- When a fire-stopping material is said to be”intumescent”, what property does it have?
a. the ability to shrink when cooled
b. the ability to expand when cooled
c. the ability to shrink when heated
d. the ability to expand when heated
A
d. the ability to expand when heated
196
Q
- A flow control roof drain system requires special building design considerations. Which of the following would be most important?
a. the slope of the roof
b. the structural design of the roof
c. the height of the parapet wall
d. the area of the roof
A
b. the structural design of the roof
197
Q
- A pH level of 4 indicates that a substance is:
a. alkaline
b. neutral
c. acetic
d. acidic
A
d. acidic
198
Q
- A water test for a water distribution system may be done with:
a. air at a minimum of 700 kPA
b. minimum pressure of 100psi
c. air in the system
d. potable water only
A
d. potable water only
199
Q
- If you were to rough in a bank of water closets, could you have one shut off valve to serve the bank?
a. yes, as long as there are no more than 6 WC on that bank
b. no, the limit is 3 WC on one valve
c. yes, as long as the water closets are tank type
d. no, one valve is required per WC
A
d. no, one valve is required per WC
200
Q
- The only time you can inter connect public and private water systems is:
a. when the water from the public and the private is constantly monitored for cleanliness
b. when the approved backflow device is used
c. it cannot ever be done
d. when the public water is a well and the private is a cistern
A
c. it cannot ever be done
