First Year Flashcards
1
Q
When did Canada’s system for model code development and maintenance begin?
A
In the 1930’s.
2
Q
Who decides the content of model codes?
A
The volunteer members.
3
Q
What are the building codes in Canada generally concerned with?
A
Fire safety.
Health[][][][]
Structural sufficiency.
4
Q
Which code may contain retroactive requirements?
A
Fire codes.
5
Q
When does a standard become enforceable?
A
By referencing a standard in a code.
6
Q
Name five standard-writing organizations.
A
BNQ.
CGA.
CGSB.
CS[][][]]
ULC[][]
7
Q
Which two Canadian cities have jurisdiction over construction?
A
Montreal.
Vancouver.
8
Q
How long before the end of a code cycle must a standing committee recieve a proposed change for it to be considered for that code cycle?
A
At least two years before the end of the cycle.
9
Q
When is a task group established?
A
When a proposal is complex and requires significant analysis.
10
Q
What options are available to a standing committee regarding a proposed change?
A
Amend a warding.
Approve a proposal.
Defer the proposal for more information or research.
Reject a proposal[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
11
Q
How long is a code cycle?
A
Five years.
12
Q
How long is the public comment period?
A
Three months.
13
Q
When does a proposed change move forward?
A
After all comments are satisfactorily resolved.
14
Q
How are the National Model Code documents developed and maintained?
A
Through a broad-based consensus process.
15
Q
The National Plumbing is part __ of the National Building Code.
A
7.
16
Q
What plumbing code is the model that the provinces and territories used to develop their plumbing codes?
A
National Plumbing Code.
17
Q
Codes are developed in Canada to provide minimum safety requirements to ensure:
A
The health and safety of our citizens.
18
Q
What are some of the other codes you may be required to follow?
A
Boiler Pressure Vessel Code.
Natural Gas and Propane Installation Code.
Pressure Vessel Code[][][][][][][][][][][][][][][][][][][][]
NFPA 13[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
NFPA 13D[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
NFPA 13R[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
19
Q
How many Standing Committees are there under the CCBFC?
A
7.
20
Q
Give a brief description of the main function of each of the following:
CGA.
CSA.
ULC.
A
CGA is an organization that tests and certifies appliances, equipment, components, and accessories to an applicable standard as well as develop standards and codes.
CSA is an organization that tests and certifies appliances, equipment, components, and accessories to an applicable standard as well as develop standards and codes.
ULC is an organization that tests and certifies appliances, equipment, components, and accessories to an applicable standard as well as develop standards.
21
Q
What is the annual cost of fire in Canada?
A
$11 billion.
22
Q
What is one of the primary objectives of the National Building Code?
A
To provide a minimum level of fire safety for building occupants.
23
Q
When was the NFPA first organized?
A
1896.
24
Q
The NFPA 13 is the standard for the ________________________.
A
Installation of sprinkler systems.
25
Where is the Canadian NFPA regional office located?
Ottawa.
26
What is the abbreviation for the Canadian Standards Association?
CSA.
27
What is the abbreviation for the American Society of Mechanical Engineers?
ASME.
28
What is the abbreviation for the American National Standards Institute?
ANSI.
29
Metals are made with varying proportions of alloy to:
A. Modify their characteristics.
B. Make them malleable[][][][][]]
C. Make them rigid[][][][][][][][][][]]
D. Lower production costs[][][]]
A. Modify their characteristics.
30
Brass piping is suitable for some drainage systems because it is:
A. Resistant to oxidation and corrosion.
B. Soft and ductile[][][][][][][][][][][][][][][][][][][]
C. Durable and versatile[][][][][][][][][][][][][][]
D. Resistant to electrolysis[][][][][][][][][][][][]
A. Resistant to oxidation and corrosion.
31
The piping with smooth interior walls which makes it very efficient for water supply is:
A. Copper.
B. Steel[][][]
C. Polyethylene.
D. Polyvinyl chloride (PVC).
A. Copper.
32
The piping which is resistent to chemical reactions and cannot be solvent welded is:
A. Chlorinated polyvinyl chloride (CPVC).
B. Polypropylene (PP)[][][][][][][][][][][][][][][][][]]
C. Acrylonitrile-butadiene-styrene (ABS)[]
D. Polyvinyl chloride (PVC)[][][][][][][][][][][][][]
B. Polypropylene (PP).
33
Duriron is an alloy of iron and sillica used in industrial applications that require:
A. High temperature resistence.
B. Acid resistence[][][][][][][][][][][][]]
C. Low temperature resistence[]]
D. High coefficient of expansion.
B. Acid resistence.
34
The piping which is resistent to corrosion and high temperature is:
A. Cast iron.
B. Carbon steel.
C. Stainless steel.
D. Ductile iron[][][]
C. Stainless steel.
35
Lead piping cannot be used for water systems because it may:
A. Burst under pressure.
B. Leak at elbows and valves.
C. Contaminate water[][][][][][][]]
D. Corrode quickly[][][][][][][][][][]
C. Contaminate water.
36
The system which uses ABS piping because it is inexpensive and strong is:
A. Drainage, waste and venting.
B. Acid drainage[][][][][][][][][][][][][][]
C. Steam venting[][][][][][][][][][][][][]]
D. Hot water[][][][][][][][][][][][][][][][][]]
A. Drainage, waste and venting.
37
The piping that is highly resistent to chemicals but not very temperature resistant is:
A. Polypropylene (PP).
B. Polyvinyl chloride (PVC).
C. Polyethylene (PE)[][][][][][]]
D. Chlorinated polyvinyl chloride (CPVC).
C. Polyethylene (PE).
38
The piping which is highly resistant to strong acids, alkalis, salt solutions, alchohols and bacteria is:
A. Polypropylene (PP)
B. Polyvinyl chloride (PVC).
C. Polyethylene (PE)[][][][][][]]
D. Chlorinated polyvinyl chloride (CPVC).
B. Polyvinyl chloride (PVC).
39
Glass piping can withstand:
A. Sudden shocks.
B. Alkalis[][][][][][][][][]]
C. High and low temperatures.
D. All acids[][][][][][][][][][][][][][][][][][]]
C. High and low temperatures.
40
The three basic standards used to describe the final dimensions of commonly used piping and tubing are iron pipe size (IPS), ACR copper tubing and:
A. Nominal pipe size (NPS).
B. National pipe threads (NPT).
C. Plastic pipe size (PPS)[][][][][][]]
D. Copper tubing standard (CTS).
D. Copper tubing standard (CTS).
41
A pipe that is described as NPS 3 has roughly a 3":
A. Inside diameter (ID).
B. Outside diameter (OD).
C. Radius[][][][][][][][][][][][][][][]]
D. Wall thickness[][][][][][][][]
A. Inside diameter (ID).
42
An NPS 2 iron pipe and an NPS 2 copper tube will have:
A. The same wall thickness.
B. Different outside diameters.
C. Different inside diameters[][]]
D. The same weights[][][][][][][][][]]
B. Different outside diameters.
43
The National Pipe Thread Tapered (NPT) standard ensures that any ___ threaded pipes will screw together and form a tight seal.
A. ANSI.
B. IPS[][]]
C. OD[][]]
D. NPT[]]
B. IPS.
44
Piping larger than 12" NPS is described by:
A. Millimeters.
B. Iron pipe size II (IPSII).
C. Outside diameter[][][][]
D. Nominal sizes[][][][][][][]
C. Outside diameter.
45
The range of wall thickness available in IPS piping is classified by:
A. Weight classes.
B. Schedule numbers.
C. Standard dimension rations.
D. Nominal sizes[][][][][][][][][][][][][]
B. Schedule numbers.
46
SDR or standard dimension ratios relate pipe:
A. Dimensions to pressure ratings.
B. Dimensions to weights[][][][][][][][]]
C. Weights to wall thickness[][][][][][]]
D. Weights to overall lengths[][][][][]]
A. Dimensions to pressure ratings.
47
Theoretically, different sizes of pipe, made of the same material, could have the same pressure ratings if they had equal:
A. Pipe dimensions.
B. Standard dimension ratios.
C. Outside diameters[][][][][][][]]
D. Schedule numbers[][][][][][][]
B. Standard dimension ratios.
48
Steel piping comes in random lengths of:
A. 1 m (3').
B. 3 m (10').
C. 4 m (13')[]
D. 6 m (20').
D. 6 m (20').
49
Given an NPS 2 iron pipe, an NPS 2 copper tube, an NPS 2 refrigeration tube and an NPS 2 plastic pipe, which would have the largest outside diameter?
A. Iron pipe.
B. Plastic pipe.
C. Copper tube.
D. Refrigeration tube.
A. Iron pipe.
50
Schedule 40 pipe is:
A. Extra strong.
B. Double extra strong.
C. Standard wall thickness.
C. Standard wall thickness.
51
Schedule 80 pipe is:
A. Extra strong.
B. Double extra strong.
C. Standard wall thickness.
A. Extra strong.
52
Schedule 160 pipe is:
A. Extra strong.
B. Double extra strong.
C. Standard wall thickness.
B. Double extra strong.
53
Schedule numbers indicate approximate values of pressure-stress ratios times:
A. 10.
B. 100.
C. 1,000.
D. 10,000.
C. 1,000.
54
A schedule 80S pipe would be:
A. Stainless steel.
B. Aluminum[][][][]]
C. Carbon steel[][]
D. Monel steel[][]]
A. Stainless steel.
55
Compared to type M copper tubing, type K has:
A. More sizes available.
B. Larger diameters[][][]]
C. Thicker walls[][][][][][][]]
D. Thinner walls[][][][][][][]
C. Thicker walls.
56
Soft copper tubing is available in:
A. Large diameters only.
B. Coils[][][][][][][][][][][][][][][]
C. Rigid lengths[][][][][][][][]
D. Small diameters only[]
B. Coils.
57
A copper tube with an outside diameter of 7/8" has a nominal size of:
A. 5/8".
B. 3/4".
C. 7/8".
D. 1"[][]]
B. 3/4".
58
A refrigeration tube with a nominal size of 3/4" will have an outside diameter of:
A. 1/5".
B. 1/2".
C. 3/4".
D. 7/8".
C. 3/4".
59
What colour is type L tubing?
A. Blue.
B. Red[]
C. Yellow.
D. White[]
E. Green[]
A. Blue.
60
What colour is Type K tubing?
A. Blue
B. Red[]
C. Yellow.
D. White[]
E. Green[]
E. Green.
61
What colour is DWV tubing?
A. Blue.
B. Red[]
C. Yellow.
D. White[]
E. Green[]
C. Yellow.
62
What colour is Type M tubing?
A. Blue.
B. Red[]
C. Yellow.
D. White[]
E. Green[]
B. Red.
63
The type of copper tubing found in the finned core of heat transfer units is:
A. Type M.
B. Type L[]
C. Type H[]
D. Type K[]
C. Type H.
64
The colour coding for tubing is found on:
A. The sides of the tubing.
B. Inside walls, near tube ends.
C. Manufacturer's specifications.
D. The wall, at start of each riser.
A. The sides of the tubing.
65
Medical gas tubing is colour coded to indicate:
A. The pressure-stress ratio of tubing.
B. Type of gas carried[][][][][][][][][][][][][][]]
C. Most recent inspection[][][][][][][][][][][]]
D. Nominal size of tubing[][][][][][][][][][][][]
B. Type of gas carried.
66
Some plastics are protected from exposure by:
A. Heat treatment.
B. Dark colour dyes.
C. Neoprene skins[][]
D. Special chemicals.
B. Dark colour dyes.
67
True or False?
The colour of a plastic pipe indicates its pressure rating.
False.
68
What colour is ABS plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
Black.
69
What colour is PVC plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
A. Grey, white blue.
70
What colour is PB plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
D. Grey.
71
What colour is PE plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
B. Black, yellow, orange.
72
What colour is PP plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
C. Grey, black.
73
Referring to the figure below, what is the manufacturer's brand name?
Plasco.
74
Referring to the figure below, what is the pipe diameter?
3/4" OD.
75
Referring to the figure below, what is the ASTM material classification?
PB 2100.
76
Referring to the figure below, what is the ASTM specification document number?
D-3309.
77
Referring to the figure below, what is the Standard Dimension Ratio?
SDR 11.
78
Referring to the figure below, what is the temperature rating?
82°C.
79
Referring to the figure below, what is the pressure rating?
680 kPa.
80
Referring to the figure below, what is the date of manufacture?
870415.
81
Referring to the figure below, the thickness of the pipe wall would be calcularted using ___ and \_\_\_.
3/4" OD and SDR 11.
91
Plastic piping is described by three different wall thickness standards: SDR, IPS(Schedule numbers) and:
A. ASTM.
B. PIP[][][]
C. ANSI[]]
D. NSF[][]
B. PIP.
92
To change the direction of a single piping line from vertical to horizontal, use a:
A. 45° double tee.
B. 90° elbow[][][][]]
C. 2 " cleanout[][][]
D. Sanitary tee[][][]
B. 90° elbow.
93
To connect a branch line so that it is perpendicular to the main line of piping in a water supply system, use a:
A. 45° double wye.
B. Union[][][][][][][][][]]
C. Sanitary coupling.
D. Streamline tee[][][]
D. Streamline tee.
94
A long quarter bend is probably used to change the direction of piping:
A. In a drainage, waste and vent system.
B. That connects a fixture to a vent system.
C. That connects a hot water heater to supply lines.
D. In hot water supply lines[][][][][][][][][][][][][][][][][][][][][][][]
A. In a drainage, waste and vent system.
95
To connect piping or other fittings made from different materials or with different jointing designs, use:
A. An adaptor.
B. A transitory coupling.
C. A close nipple[][][][][][]
D. A two-piece flange[][]
A. An adaptor.
96
Referring to the figure below, it is a:
A. An adaptor.
B. A streamline elbow.
C. A 45° DWV elbow[][]
D. A coupling[][][][][][][][]
B. A streamline elbow.
97
Referring to the figure below, it is a:
A. 45° elbow.
B. Three-way elbow.
C. 45° wye[][][][][][][][][]
D. DWV tee[][][][][][][][]
C. 45° wye.
98
Referring to the figure below, it is a:
A. A wye.
B. A sanitary tee.
C. An offset[][][][][]
D. A short turn tee.
B. A sanitary tee.
99
Referring to the figure below, it is a:
A. Bushing.
B. Roll stop coupling.
C. Copper adaptor[][]
D. MJ coupling[][][][][]
B. Roll stop coupling.
100
Referring to the figure below, it is a:
A. Compression fitting.
B. 3-piece coupling[][][]
D. Gasketed union[][][]]
E. Insert fitting[][][][][][][]
A. Compression fitting.
101
Hangers hold the weight of a pipe from:
A. Above.
B. Below[]
C. Adjacent.
D. Inside[][][]
A. Above.
102
Hangers are mounted next to fittings to prevent additional stress on the:
A. Joists.
B. Supports.
C. Foundation.
D. Joints[][][][][]]
D. Joints.
103
What is the force that will cause pipe movement, noise and possible damage if a liquid flowing through a pipe is suddenly stopped?
A. Inertia.
B. Friction.
C. Thermal expansion.
D. Electrolysis[][][][][][][]]
A. Inertia.
104
Weak pipe joints, such as hub and spigot underground pipe joints, may be supported at:
A. The highest point along piping run.
B. Each joint[][][][][][][][][][][][][][][][][][][][][][][]]
C. Every 10 pipe diameters[][][][][][][][][][]
D. Each fixture[][][][][][][][][][][][][][][][][][][][][]
B. Each joint.
105
Excessive pipe motion caused by temperature change is _________________ by specially designed supports and hangers.
A. Prevented.
B. Channeled and eliminated.
C. Increased[][][][][][][][][][][][][][][]]
D. Directed and controlled[][][]
D. Directed and controlled.
106
Electrolysis is a damaging force that can occur when these two metals are in direct contact.
A. Copper and plastic.
B. Ferrous metals and non-ferrous metals.
C. Steel and cast iron[][][][][][][][][][][][][][][][][][][]
D. Dielectric fittings and copper piping[][][]]
B. Ferrous metals and non-ferrous metals.
107
You can allow for movement caused by thermal expansion by:
A. Installing fewer fittings.
B. using heavier pipe[][][][]
C. Building expansion loops.
D. Suspending piping at least 1 m below joists.
C. Building expansion loops.
108
Expansion loops minimize the risk of damage to piping and attached components by:
A. Absorbing and elminating the movement of piping.
B. Supporting but not restraining movement[][][][][][][][][]
C. Expanding at double the rate of piping[][][][][][][][][][][]]
D. Expanding at half the rate of piping[][][][][][][][][][][][][][]]
B. Supporting but not restraining movement.
109
Electrolysis will only occur in the presence of an electrolyte. In most piping systems, the electrolyte will be:
A. Acid.
B. Flux[]
C. Water.
D. Dust[]
C. Water.
110
What type of piping is likely to require more closely spaced hangers and supports?
A. PVC water pipe.
B. Stainless steel[]]
C. Asbestos-cement.
D. PVDF lined pipe[]]
A. PVC water pipe.
111
Before selecting hangers or supports, you should consider the:
A. Weight of piping and fittings.
B. Tensile strength of piping and fittings.
C. Impact resistance of the hanger or support.
D. Ductility of the hanger or support[][][][][][][][][]
A. Weight of piping and fittings.
112
If you are installing copper tubing, what is an important factor you should consider when selecting hangers and supports?
A. Weight.
B. Expansion ratio.
C. Electrolytic action.
D. Maximum inside diameter.
C. Electrolytic action.
113
Why should you consider the material of structural members, floors or ceilings before selecting hangers and supports?
A. To determine the maximum diameter of piping that can be supported.
B. To determine the method of fastening and type of fastners required[][]
C. To allow for building movement[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
D. To strengthen main building supports[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
B. To determine the method of fastening and type of fastners required.
114
A split-ring or clevis hanger might be chosen if:
A. The position of piping might require adjustment after installation.
B. To allow for thermal expansion[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
C. To allow for building movement[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
D. Piping were to be suspended from concrete grinders[][][][][][][][][][]
A. The position of piping might require adjustment after installation.
115
Roller hangers might be selected for a piping installation where temperature and flow changes in piping cause:
A. Rapid expansion at joints.
B. Weakened joints[][][][][][][][]
C. Longitudinal movement[][]
D. Vibration[][][][][][][][][][][][][][][]
C. Longitudinal movement.
116
Vertical risers generally require support at the base of the pipe and:
A. Every 1.5m (5')
B. At the top of the run.
C. Every 3m (10')[][][][][][]]
D. At each fitting or valve.
D. At each fitting or valve.
117
The two most important factors to consider when determining the size, shape and location of thrust blocks on underground piping are:
A. Size of piping and number of fittings.
B. Total estimated weight of piping and number of 45° turns.
C. Thrust force and bearing strength of soil[][][][][][][][][][][][][][][][]
D. Weight of piping and depth of soil above piping[][][][][][][][][]
C. Thrust force and bearing strength of soil.
118
Referring to the figure below, it shows:
A. A u-bolt.
B. A roller hanger.
C. An adjustable clevis hanger.
D. A ring hanger[][][][][][][][][][][][]]
C. An adjustable clevis hanger.
119
Referring to the figure below, it is a:
A. U-Clamp.
B. Riser clamp.
C. Two-hole clip.
D. Concrete insert.
B. Riser clamp.
120
Referring to the figure below, it shows a:
A. Pipe saddle.
B. Pipe ring hanger.
C. Beam clamp[][][][]]
D. Pipe stachion saddle.
D. Pipe stachion saddle.
121
Referring to the figure below, it is a:
A. Riser clamp.
B. Roller hanger.
C. Split ring hanger.
D. Trapeze hanger[]
C. Split ring hanger.
122
Referring to the figure below, it is a:
A. Trapeze hanger.
B. Roller hanger[][]]
C. Pipe saddle[][][][]
D. Spring hanger[]]
B. Roller hanger.
123
Referring to the figure below, it is a:
A. Toggle bolt.
B. Thrust block.
C. Shallow ring clamp.
D. Rod-and-turnbuckle.
B. Thrust block.
124
Referring to the figure below, it is a:
A. Conrete insert.
B. Beam clamp[][]]
C. Spring hanger[]
D. Concrete flange.
A. Conrete insert.
125
Referring to the figure below, it is a:
A. Concrete insert.
B. Clevis hanger[][]
C. Wall pipe support.
D. Spring hanger[][][]
D. Spring hanger.
126
Referring to the figure below, it is a:
A. Rod and turnbuckle.
B. Beam clamp[][][][][][][]
C. An adjustable clevis hanger.
D. Spring hanger[][][][][][][][][][][][]]
A. Rod and turnbuckle.
127
Referring to the figure below, it is a:
A. Beam clamp.
B. Riser clamp[]]
C. Rod and turnbuckle.
D. Insulation shield[][][]]
A. Beam clamp.
128
To lubricate and seal threaded piping, you should use:
A. Teflon thread.
B. Pipe dope[][][]
C. Silicone[][][][][]
D. Plumber's putty.
B. Pipe dope.
129
Two common forms of Teflon thread sealents are liquid and:
A. Gelatin.
B. Spray[][]
C. Stick[][][]
D. Tape[][][]
D. Tape.
130
O-ring shaped gaskets are used to form seals between:
A. Bell-and-spigot piping.
B. Flanged piping[][][][][][]]
C. Grooved piping[][][][][][]
D. Threaded piping[][][][][]
A. Bell-and-spigot piping.
131
The most common types of sealing gaskets used in domestic plumbing installations are made from:
A. Wax.
B. Lead.
C. Silicone.
D. Elastomeric substances.
D. Elastomeric substances.
132
The sealants that may be toxic and should only be used in well-ventilated conditions include:
A. Plumber's putty, Silicone caulking, Wax.
B. Silicone caulking, Pipe dope, Solvent cement.
C. Solvent cement, Vegetable fibre gaskets, Wax.
D. Pipe dope, Graphite packing, Plumber's putty[]
B. Silicone caulking, Pipe dope, Solvent cement.
133
Ready-made gaskets that fit flat flanges and have matching bolt holes for easy installation are:
A. Donuts.
B. Ring gaskets.
C. O-rings[][][][][]]
D. Self-sealing gaskets.
B. Ring gaskets.
134
A self-sealing gasket is found in a:
A. Victaulic fitting.
B. Bell-and-spigot joint.
C. Full face flange[][][][][]
D. Mechanical joint coupling.
A. Victaulic fitting.
135
Thread compounds act to lubricate, seal and protect threaded pipe joints from:
A. Overtightening.
B. Damage from rapid temperature changes.
C. Rust and corrosion[][][][][][][][][][][][][][][][][][][][][]]
D. Staining[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
C. Rust and corrosion.
136
Metal gaskets are usually found in:
A. Fixture drains.
B. Industrial applications.
C. Medical fixtures and fittings.
D. Hot water piping[][][][][][][][][][]
B. Industrial applications.
137
The sealent used to form watertight seals under faucets, drains and strainers is:
A. Plumber's putty.
B. Silicone caulking.
C. Solvent cement[]]
D. Teflon[][][][][][][][][][]
A. Plumber's putty.
138
Plumber's install non-potable water systems that transport water that is:
A. Extremely acidic.
B. Full of suspended dirt and sediment.
C. Not safe for human consumption[][][]]
D. Not safe to wash with[][][][][][][][][][][][][][]
C. Not safe for human consumption.
139
The hot water that flows in parts of potable water systems or hot water heating systems can lower the ability of plastic pipe or tubing to withstand pressure and inrease metal tubing and fitting:
A. Corrosion.
B. Rust[][][][][]]
C. Oxidation[]
D. Electrolysis.
A. Corrosion.
140
Although hot water heating systems are initially filled with potable water, protective devices must be installed to ensure that the water in the heating system does not enter the household potable water supply. This is necessary because the water in the heating system is:
A. Too hot.
B. Contaminated by algae.
C. Contaminated by chemicals.
D. Stagnent[][][][][][][][][][][][][][][][][][]
C. Contaminated by chemicals.
141
A sanitary drainage system conducts:
A. Potable water.
B. Chemically contaminated water.
C. Storm water and waste water[][]]
D. Wastewater and sewage[][][][][][]]
D. Wastewater and sewage.
142
Medical gas piping must be installed by plumbers with special gas tickets that ensure they are familiar with the risk of:
A. Contamination.
B. Explosions[][][][]
C. Thermal fluctuations.
D. Extremely low pressure systems.
B. Explosions.
143
Specialty piping systems may use plastic lined pipe or glass piping to carry substances such as:
A. Ultra pure water, corrosive chemicals.
B. Radioactive substances, very hot water.
C. Extremely cold liquids, high pressure gases.
D. Steam, heavy water[][][][][][][][][][][][][][][][][][][][][][]]
A. Ultra pure water, corrosive chemicals.
144
True or False?
A cross fittinig can be installed when drainage piping runs inside a house.
False.
145
True or False?
A sanitary T fitting can be used to change the direction of horizontal flow in a drainage system.
False.
146
True or False?
A vertical drainage pipe shall not carry both sewage and storm water.
True.
147
True or False?
Every pipe in a drainage system shall have a minimum downward slope of 1:50.
False.
148
True or False?
Polyethylene pipe can only be used for water service applications.
True.
149
True or False?
Cast iron soil pipe and fittings shall not be used in a water system.
True.
150
True or False?
Galvanized steel piping is no longer permitted in any part of a water distribution system.
False.
151
True or False?
Coper tubing should not be used to drain urinals.
True.
152
True or False?
The pressure ratings of CPVC piping decrease as the operating temperatures of flows increase.
True.
153
True or False?
Screwed cast iron water fittings shall not be used in a drainage system.
True.
154
True or False?
Lead waste pipe is not permitted in water systems or for building sewars.
True.
155
True or False?
Brass threaded fittings should be used on any visible water drain lines inside a building.
False.
156
True or False?
## Footnote
When a pipe is reduced, the reducer fitting shall be installed so that the system can be completely drained.
True.
157
True or False?
Removable cleanout plugs for ferrous metal fittings must be made from ferrous metal.
False.
158
"MJ" pipe is a term used to describe:
A. Groved iron piping.
B. Hub-and-spigot iron piping.
C. Plain-ended DWV cast iron piping.
D. Flared iron piping[][][][][][][][][][][][][][][]]
C. Plain-ended DWV cast iron piping.
159
Fusion welding is a method of joining pipe that may be used with:
A. Cast iron piping.
B. Plastic piping[][][]
C. Soft copper piping.
D. Malleable iron piping.
B. Plastic piping.
160
Copper tubing and fittings may be joined by:
A. But-or-socket-welding.
B. Soldering or brazing[][]
C. But-or-socket-fusion[][]]
D. Solvent cement[][][][][][]]
B. Soldering or brazing.
161
When a metal pipe is inserted into a fitting and welded, this is known as a:
A. Socket-weld.
B. Insert soldering.
C. Socket-fusion[][]]
D. Compression welding.
A. Socket-weld.
162
Solvent welding is a technique used to join:
A. All plastic pipe.
B. PE pipe[][][][][][][]
C. PB and PE pipe
D. CPVC, PVC and ABS pipe.
D. CPVC, PVC and ABS pipe.
163
Pipes that may have threaded ends include iron, steel and some types of:
A. PB and PE.
B. Copper and vitreous clay.
C. Plastic and copper[][][][][][]]
D. Lead and clay[][][][][][][][][][]]
C. Plastic and copper.
164
A type of flat-faced fittings used to bolt plastic or metal piping together are:
A. Victaulic couplings.
B. Flanges[][][][][][][][][][]]
C. Compression couplings.
D. Unions[][][][][][][][][][][][][][][]]
B. Flanges.
165
Copper and plastic tubing are commonly joined with:
A. Compression fittings and slip on fittings.
B. Flanges and unions[][][][][][][][][][][][][][][][][][]]
C. Compression fittings and MJ clamps[][][]]
D. MJ clamps and O-rings[][][][][][][][][][][][][][][]]
A. Compression fittings and slip on fittings.
166
A common type of slip on joint has a groove machined into the hub-end of a pipe that:
A. Holds the other pipe in place.
B. Reduces pressure exerted on the joint.
C. Holds an O-ring in place[][][][][][][][][][][][][]]
D. Supports a metal clamp[][][][][][][][][][][][][][]
C. Holds an O-ring in place.
167
Polybutelene pipe cannot be solvent welded so it must be joined with:
A. MJ clamps.
B. Victaulic fittings.
C. Fusion welding[]
D. Insert fittings[][]]
D. Insert fittings.
168
One method of calculating the lengths of piping needed to complete a plumbing installation is to measure ____________ and __________ and subract the fitting allowance.
A. Face-to-center, face-to-face.
B. Face-to-face, thread engagement.
C. Center-to-center, end-to-end[][][][][]
D. Center-to-center, end-to-center[][]]
D. Center-to-center, end-to-center.
169
The distance from the end of a pipe (inserted into a fitting) to the center of the fitting is known as:
A.Thread engagement.
B. Fitting allowance[][][]]
C. End-to-center measurement.
D. Pipe allowance[][][][][][][][][][][][]]
B. Fitting allowance.
170
When you are measuring piping that will be joined by flanges, you should allow for the:
A. Thickness of the flange.
B. Weight of the flange[][][]
C. Thickness of the gasket.
D. Surface area of the gasket.
C. Thickness of the gasket.
171
Flared compression fittings can be used to join:
A. Copper and some types of iron pipe.
B. Soft copper and some types of plastic pipe.
C. Soft PE and soft copper pipe[][][][][][][][][][][][][][]
D. PE and copper pipe[][][][][][][][][][][][][][][][][][][][][][]
B. Soft copper and some types of plastic pipe.
172
Before they are joined, all cut pipe ends should be:
A. Deburred.
B. Flared[][][]]
C. Beveled[][]
D. Polished[]]
A. Deburred.
173
The employer must report a fatal accident to the WCB:
A. Anytime within a week of the occurence.
B. At the end of the fiscal year[][][][][][][][][][][][]
C. Immediately[][][][][][][][][][][][][][][][][][][][][][][][][][]
D. Only if it is part of the union requirements.
C. Immediately.
174
In the workplace, who must take responsibility for making sure that the workplace is safe?
A. Only the employees.
B. Just the union[][][][][][]
C. Worker's Compensation Board.
D. The employer and employees[]
D. The employer and employees.
175
If you find a condition that is unsafe or could be harmful, you should:
A. Report it immediately to your supervisor or employer.
B. Refuse to work and go home[][][][][][][][][][][][][][][][][][][][][][]
C. Not say anything becuase you might lose your job[][]]
D. Write a report and send it to the safety committee[][]]
A. Report it immediately to your supervisor or employer.
176
Name four workers not covered by WCB.
Plumbing 1 students.
Professional athletes.
Self-employed individuals.
(Who work for two or more employers in a day)
Volunteers[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
177
A person who instructs, directs and controls workers in the perfromance of their duties is the definition of?
Supervisor.
178
A thing or condition that may expose a person to a risk of injury or occupational disease is the definition of?
Hazard.
179
In respect to a worker or person means one who, by reason of training or experince, is familiar with the work and hazards involved is the definition of?
Qualified.
180
An employer must report a serious injury to the WCB within what length of time?
Within 3 days of the injuries occurence.
181
What is required if there is a danger of tools or materials falling off the edge of a work platform?
Toeboards.
182
What is the pressure limitation for compressed air when blowing dust from a worker's clothing?
70 kPa guage (10 psig).
183
Within what time period must a worker report an accident or injury?
Immediately.
184
Who must provide the workers the information, instruction, training, and supervision necessary to ensure the health and safety of those workers in carrying out their work and to ensure the health and safety of other workers at the workplace?
The employer.
185
Loose clothing.
| (Just need to read)
Loose fitting clothing may be caught by moving equipment or other sationary objects.
186
Long hair.
| (Just need to read)
Cranial and facial hair must be confined, or worn at a length which will prevent it from being snagged or caught in the work process.
187
Loud noises.
| (Just need to read)
When working in a noisy area wear hearing protectors.
188
Dust in the air.
| (Just need to read)
When working in a dusty place, wear a respirator to protect your throat and lungs, googles to protect your eyes, or a combination respirator-goggle.
189
Someone working overhead.
(Just need to read)[][][][][][][][][]]
If someone is working above you, be extremely cautious and wear a hardhat.
190
Rings and metal watchbands.
(Just need to read)[][][][][][][][][]]
Do not wear rings and metal watchbands as they are a hazard in the workplace. Because they conduct electricity, they can become very hot if you simultaneausly contact a battery terminal and the ground when working or a vehicle or some other type of electrical equipment.
191
Cluttered workbenches.
(Just need to read)[][][][]]
Do not work on a clutterred workbench. You might knock over a container of liquid or knock something off the bench and onto the floor. Either situation could cause damage or injury.
192
Oil or grease on the floor.
(Just need to read)[][][][][][]
Oil or grease on the floor is a very real hazard. Wipe up the spill before you or someone else slips and are injured.
193
Storing oily rags.
| (Just need to read)
Oily and greasy rags should be stored in a fireproof receptacle.
194
Well-fitting clothing of good quality that is not baggy but with long sleeves on shirts and full length trousers, not tank tops and shorts. It means shoes or boots, not sandals is the definition of?
Appropriate apparel.
195
How often are hearing tests required?
Every year.
196
A working directing traffic must wear?
High visibility apparel.
197
Clean respirable air in a confined space, means an atmosphere which is equivalent to clean outside air containting __ % oxygen.
20.
198
An employer must ensure that a fall protection system is used when a fall of __ feet (\_\_ m) or more may occur.
10.
3[]
199
What is the maximum free fall limit for a personal fall arrest system without a shock absorber?
4 feet (1.2 m).
200
Are combination locks allowed to be used for a lockout?
No.
201
An area other than an underground working, that:
A. Is enclosed or partially enclosed.
B. Is not designed or inteded for continuous human occupancy.
C. Has limited or restricted means for entry or exit that may complicate the provisions of first aid, evacuation, rescue or other emergency response sevices
and
D. Is large enough and so configured that a worker could enter to perform assigned work[][][][][][][][][][][][][][][][][]
Is the defintion of?
Confined space.
202
Shoring should extend ____ above ground level.
A. One foot.
B. Two feet[]
C. Three feet.
D. Four feet[]]
A. One foot.
203
When can silver solder containing cadmium be used?
Must not be used without prior written approval from the board.
204
How many fire extinguishers are required where welding or cutting is done?
At least one fire extinguisher of a suitable type and capacity.
205
A worker must not work from the top __ rungs of a ladder.
A. One.
B. Two.
C. Three.
B. Four[]]
B. Two.
206
True or False?
Only a qualified person may handle or use a powder actuated tool.
True.
207
A powder-actuated tool must not be driven:
A. Within 1/2" from the edge of a steel base.
B. Within 2" of a weld[][][][][][][][][][][][][][][][][][][][]]
C. Into a spalled concrete surface[][][][][][][][][]
D. All of the above[][][][][][][][][][][][][][][][][][][][][][][]
D. All of the above.
208
List the classes of fires and give an example of the type of material being burned in each.
Class A - Paper, Textiles, Wood.
Class B - Gasoline or Oil[][][][][][]
Class C - LIve Electrical Equip[]
Class D - Combustable Metals.
209
List the classes of fires that may be extinguished with the following types of extinguishers:
A. Carbon Dioxide (CO2).
B. Dry Chemical[][][][][][][][]
C. Water[][][][][][][][][][][][][][][]
A. Class B and C fires.
B. Class B and C fires.
(But some can be used on class A fires only)
C. Class A fires or to cool down large Class D fires.
210
What is the best general fire extinguisher currently available?
Triplex dry chemical.
211
When drawing the same object using different scales, which scale will produce the largest drawing?
A. 1/8" = 1'0" scale.
B. 3" = 1'0" scale[][]
C. 1/4" = 1'0" scale.
D. 1" = 1'0 scale[][]]
D. 1" = 1'0 scale.
212
When drawing an object in mm using different scales, which scale will produce the smallest drawing?
A. 1:100.
B. 1:50[]
C. 1:20[]
D. 1:2[][]
A. 1:100.
213
Architect's scales use ratios of:
A. Inches to a foot.
B. Feet to yards[][]]
C. Inches to mm[][]]
D. mm to m[][][][][][]]
A. Inches to a foot.
214
State two reasons why it is important to obtain dimensions by measuring drawings.
1. Drawing is not necessarily drawn to scale.
2. Shrinkage may occur in the reproduction process.
215
State reasons why it is not usually necessary to measure drawings for dimensions.
All the necessary dimensions are usually included on the blueprints.
216
State the procedure required to obtain dimensions that appear to be missing.
Examine several or all prints in the set.
Measure only after you are sure dimensions cannot be found from information given on the print.
217
State why arithmatic is necessary occassionally for finding dimensions.
To obtain dimensional (size) information.
218
Why are piping symbols used?
To visually represent pipes, fittings etc.
219
State two basic requirements for symbols.
Easy to draw.
Must be simple.
220
Why are single-line symbols usually used in piping drawings?
Because they are the simpilest and easiest to draw.
221
True or False?
Lengths of valves and fittings in single-line drawings are drawn to scale.
False.
222
True or False?
Flanged or welded valves and fittings in double-line drawings are drawn to scale.
True.
223
List the three views normally used in orthographic piping drawings.
1. Front.
2. Plan[]
3. Right.
224
State one advantage of orthographic respresentations.
It pinpoints the exact location of equipment.
225
State two limitations of orthographic representations.
1. Not sufficient for systems with many overlapping pipes, valves and fittings.
2. Two views must always be used, making interpretation difficult when the piping system is intricate.
226
State how an isometric piping drawing can be recognized?
1. Lines are drawn at an angle of 30° to the horizontal.
2. Vertical lines are drawn vertically[][][][][][][][][][][][][][][][][]]
227
State the number of dimensions shown by an isometric drawing.
Three.
228
State one advantage of isometric piping drawings over orthographic piping drawings.
They are easier to interpret.
229
State the type of information contained in notes appearing on drawings.
Written descriptions of material/equipment/valves shown in symbol form on drawing.
230
State where the scale of a drawing usually appears.
Bottom of drawing.
Title panel[][][][][][][]]
231
State what is meant by "A1 of 4."
First architectural drawing of four.
232
In flow diagrams how are larger pipes with larger flow shown?
By heavier lines.
233
Piping drawings are indicated by:
A. A.
B. S.
C. M.
D. E.
C. M.
234
True or False?
Gate valves are commonly used in drainage, waste and vent systems.
False.
235
True or False?
A large hot water heating system requires a large daily supply of fresh water.
False.
236
Flanges are usually used on pumps because:
A. The joints most easily prevent leaks.
B. Maintenance is easy[][][][][][][][][][][][][][]]
C. Threaded joints tend to stretch and leak.
B. Maintenance is easy.
237
Vacuum breakers prevent:
A. Excessive pressure.
B. Back siphonage[][][]]
C. Excessive temperature.
D. Thermal expansion[][][]]
B. Back siphonage.
238
List five types of information shown on a plot plan.
1. Contour lines.
(Topography)[][]
2. Dimensions[]
3. Elevations of specific points.
4. Locations of public utilities[]]
5. Property line[][][][][][][][][][][][][]]
239
List five types of information shown on a site plan.
1. Contour lines showing existing slope.
2. Dimensions of lot[][][][][][][][][][][][][][][][][]]
3. Elevations of specific points[][][][][][][][]
4. Location of building/public utilities[][]]
5. Property line[][][][][][][][][][][][][][][][][][][][][]
240
List three types of information shown on a floor plan.
1. Appliances, Fixtures and Equipment
2. Layout of rooms[][][][][][][][][][][][][][][][][][]
3. Types of materials used[][][][][][][][][][][]
241
State what is shown by an elevation drawing.
Finished exterior view of one side of a building.
242
State what is shown by a sectional-view drawing.
Cross section of part of a building.
(Detailed construction information,including materials to be used)
243
Large-scale drawings of an object not shown in complete detail on regular plans or elevations is the definition of?
Detail.
244
List the items shown on a structural drawing.
1. Openings for chimneys, doorwells, stairs and windows.
2. Supporting members[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
3. Wall and partition construction[][][][][][][][][][][][][][][][][][][][][][]
245
List two types of information shown on an electrical plan.
1. Dotted lines show that a switch and fixture are connected.
2. Symbols show location of controls, fixtures and outlets[][][]
246
List three types of information shown on a climate control plan.
1. Location of ducts or heating pipes.
2. Location of equipment[][][][][][][][][][][]
3. Location of register or radiators[][]]
247
Manila rope with one or more coloured strands is:
A. No 1 grade.
B. Yacht rope[]
C. Hardware store rope.
D. Bolt rope[][][][][][][][][][][]
A. No 1 grade.
248
The strongest of the ropes listed below is:
A. Polypropylene.
B. Sisal[][][][][][][][][]]
C. Polyester[][][][][]]
D. Nylon[][][][][][][][]]
C. Polyester.
249
The type of dry rope with the best electrical insulating properties is:
A. Manila.
B. Polypropylene.
C. Polyester[][][][][]
D. Nylon[][][][][][][][]
B. Polypropylene.
250
When loaded to it's breaking point, nylon rope will stretch up to:
A. 10% of it's original length.
B. 20% of it's original length.
C. 30% of it's original length.
D. 40% of it's original length.
D. 40% of it's original length.
251
What is a thimble used for?
To reduce the stress on the rope at connections.
252
Which synthetic rope will float on water?
Polypropylene.
253
To remove new rope from its shipping coil, you should:
A. Pull it from the inside of the coil.
B. Roll the coil across the floor[][][][]
C. Mount the coil on an axle[][][][][][]
D. Cut portions from the side of the coil.
A. Pull it from the inside of the coil.
254
What is the purpose of whipping?
Prevents the rope strands from unravelling.
255
Ropes are best stored in areas which are:
A. Well ventilated.
B. Moist[][][][][][][][][]
C. Above 25°C (77°F)
D. Exposed to sunlight.
A. Well ventilated.
256
The maximum load imposed on a rope should never exceed:
A. 3/4 of it's breaking strength.
B. 1/2 of it's breaking strength.
C. 1/9 of it's breaking strength.
D. 1/10 of it's breaking strength.
C. 1/9 of it's breaking strength.
257
Sharp bends and knots can reduce the strength of a rope by up to:
A. 25%.
B. 40%.
C. 50%.
D. 85%.
C. 50%.
258
The portion of the rope which forms the loop is called the:
A. Middle.
B. Standing part.
C. Circle[][][][][][][]]
D. Bight[][][][][][][][]
D. Bight.
259
Which of the knots listed below froms a non-slip loop?
A. Square knot.
B. Bowline[][][][]]
C. Reef knot[][][]
D. Timber hitch.
B. Bowline.
260
The knot which multiplies the tension you apply to a rope is the:
A. Timber hitch.
B. Bowline[][][][]]
C. Sheet bend[]
D. Trucker's knot.
D. Trucker's knot.
261
If you had to join a large-diameter rope to a small-diameter rope, you would use a:
A. Square knot.
B. Carrick bend.
C. Sheet bend[]]
D. Half hitch[][][]]
C. Sheet bend.
262
To join two ropes of the same diameter together, you should use a:
A. Double half hitch.
B. Reef knot[][][][][][][]
C. Sheet bend[][][][][]
D. Timber hitch[][][][]
B. Reef knot.
263
For overhead lifting, you should use a:
A. A single piece of rope.
B. Ropes joined with a sheet bend.
C. Ropes joined with a half hitch[][]]
D. Any two ropes of equal size[][][]]
A. A single piece of rope.
264
What is the minimum clearence required while working around a 75,000 volt power line?
3 meters (10 feet).
265
What is the minimum clearence required while working around a 200,000 volt power line?
4.5 meters (15 feet).
266
Describe "center of gravity."
The point at which an object balances regardless of it's position.
267
Where should the slings attach to the load, in relation to the center of gravity?
Above the center of gravity.
268
Where will the center of gravity of a load be positioned after it is lifted off the ground?
Directly below the hook.
269
Does the position of the center of gravity depend upon how the load is rigged?
If rigged improperly, the shifting may cause the load to become unstable and result in an accident.
270
Turbuckles are used to adjust the length of slings so that loads can be lifted:
A. In a level position.
B. Higher[][][][][][][][][][]
C. Vertically[][][][][][][][]
D. From below[][][][][]
A. In a level position.
271
The screw threads at each end of a turnbuckle's sleeve must be:
A. Locking at one end and non-locking at the other.
B. Identical[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
C. A larger diameter at one end than at the other[][]]
D. Left handed at one end and right handed at the other.
D. Left handed at one end and right handed at the other.
272
Shoulder-type eye bolts are able to withstand pulls at an angle no greater than:
A. 60° to the horizontal.
B. 60° to the vertical[][][]
C. 30° to the side[][][][][]]
D. 45° to the vertical[][]]
D. 45° to the vertical.
273
When several ropes are attached to a single hook, make the connection to the hook using a:
A. Turnbuckle.
B. U-bolt[][][][][]
C. Shackle[][][]
D. Series of cable clips.
C. Shackle.
274
What two purposes do choker hooks serve?
Protect the rope from sharp bends.
They can be used as choker hitches.
275
The U-bolt part of a cable clip must be installed so it bears on the:
A. Thimble.
B. Live end of the rope.
C. Dead of the rope[][][]]
D. Whipping[][][][][][][][][][]
C. Dead of the rope.
276
The number of cable clips required for a connection depends on the:
A. Diameter of the rope.
B. Type of clipe used[][]]
C. Mass of the load[][][][]
D. Strength of the rope.
A. Diameter of the rope.
277
Correctly-installed cable clips will reduce the breaking strength of wire rope by:
A. 10%.
B. 20%.
C. 30%.
D. 40%.
B. 20%.
278
When it is necessary to equalize the load on sling legs and to make sure the loads are equal and when two hoist lines are used is the definition of?
When are equilizer beams used.
279
What sling type should be used to lift 25 pieces of steel pipe 8 meters (25 feet) long?
Choker hitch.
Double-wrap basket.
280
True or False?
Pipe rollers can be used to move boilers or chillers.
True.
281
Tirfor jacks have capacities up to:
A. 7000 kg.
B. 1500 kg[]
C. 2200 kg.
D. 3200 kg.
D. 3200 kg.
282
Chain hoists have capacities up to:
A. 7000 kg.
B. 8000 kg.
C. 9000 kg.
D. 10000 kg.
C. 9000 kg.
283
Manual lifting devices include:
A. Chain fall.
B. Block and tackle.
C. Come-along[][][][]]
D. All of the above[]
D. All of the above.
284
A pulling device that can use either chain or wire is the:
A. Chain fall.
B. Block and tackle.
C. Come-along[][][][]]
D. Gin pole[][][][][][][]]
C. Come-along.
285
An apparatus capable of long, continuous lifts is the:
A. Chain hoist.
B. Come-along.
C. Pallet truck[]]
D. Tirfor jack[][]
D. Tirfor jack.
286
Tirfor jacks can be made to travel in the opposite direction by:
A. Flipping the gear lever.
B. Turning the handle in the opposite direction.
C. Releasing the ratchet[][][][][][][][][][][][][][][][][][][][][]]
D. Relocating the pipe handle[][][][][][][][][][][][][][][]]
D. Relocating the pipe handle.
287
A tirfor jack is a hoisting device which uses a:
A. Nylon rope.
B. Metal chain.
C. Wire rope[]]
D. Fiber rope[]
C. Wire rope.
288
If you overload a Tirfor jack, the shear pin will break and:
A. The load will drop.
B. The handle will jam.
C. A warning light will flash.
D. All load movement will stop.
D. All load movement will stop.
289
How should slings and wire rope be stored?
In a dry location off the ground.
290
What should be done with a wire rope sling that has a kink in it?
Destroy and discard it.
291
What should be done if there is a possibility of shock loading when using a wire rope sling?
Take special precautions and/or use a larger size rope.
292
What should be done with a broken wire in a wire rope sling?
Removed as soon as possible.
(By bending the broken ends backwards and forward by hand or with a pair of pliers)
293
Is it safe to replace a lost pin in a shackle with a high-strength bolt?
No.
(The bolt is not designed to support the loads required)
294
Is it safe to repair a slight tear in a synthetic web sling?
No.
(If damage is found, remove the sling immediately)
295
The sound or light signal for "LOWER" is:
A. One bell or flash.
B. Two bells or flashes.
C. Three bells or flashes.
D. Four bells or flashes[]]
C. Three bells or flashes.
296
The sound or light signal for "STOP" is:
A. One bell or flash.
B. Two bells or flashes.
C. Three bells or flashes.
D. Four bells or flashes[]]
A. One bell or flash.
297
The sound or light signal for "ALL CLEAR" is:
A. One bell or flash.
B. Two bells or flashes.
C. Three bells or flashes.
D. Four bells or flashes[]]
D. Four bells or flashes.
298
The sound or light signal for "RAISE" is:
A. One bell or flash.
B. Two bells or flashes.
C. Three bells or flashes.
D. Four bells or flashes[]]
B. Two bells or flashes.
299
What type of footwear must be worn during material handling?
A. Cowboy boots.
B. Non-skid rubber boots.
C. High leather boots[][][][]
D. Steel-toed work boots.
D. Steel-toed work boots.
300
What type of gloves are not considered safe for handling materials?
A. Rubber gloves.
B. Short-cuff gloves.
C. Leather gloves[][]]
D. Gauntlet-type gloves.
D. Gauntlet-type gloves.
301
If there exists a danger of stepping on protruding nails, what type of footwear will protect you from injury?
A. Steel-toed boots.
B. Cowboy boots[][]]
C. Steel insoles[][][][]]
D. Non-skid rubber soles.
D. Non-skid rubber soles.
302
When a crane starts taking up the slack in the slings around a load, avoid:
A. Standing back from the load.
B. Getting your fingers pinched.
C. Checking the load's balance[]
D. Planning an escape route[][][]
B. Getting your fingers pinched.
303
When moving a suspended load:
A. Pull the load towards yourself.
B. Stand under the load[][][][][][][][]
C. Guide and follow the load[][][]]
D. Stand on the load[][][][][][][][][][]]
C. Guide and follow the load.
304
How should loose material be stored?
A. Tied together.
B. Stacked on shelves.
C. In containers or bins.
D. According to length.
C. In containers or bins.
305
What should be done with faulty equipment?
Examine all hardware, equipment, tackle and slings before using it and destroy defective components.
306
When rigging loose bundles of round stock use:
A. Double-wrapped basket hitches.
B. Two-leg bridle hitch[][][][][][][][][][][]]
C. Four-leg bridle hitch[][][][][][][][][][][]
D. Single-choker hitch[][][][][][][][][][][]]
A. Double-wrapped basket hitches.
307
Tag lines should be used to control loads because they allow control from:
A. Directly under the load.
B. A safe distance[][][][][][][]
C. Above the load[][][][][][][]
D. Within the crane[][][][][]]
B. A safe distance.
308
Padding should be applied to all loads that have:
A. Excessive weight.
B. Slippery surfaces.
C. Irregular surfaces.
D. Sharp corners[][][]
D. Sharp corners.
309
When using cranes or hoists to roll or turn heavy structural shapes, you must avoid:
A. Slow, steady pulls.
B. Total control[][][][][]]
C. 90° turns[][][][][][][][]
D. Violent movements.
D. Violent movements.
310
If you are using cross-sticks to stabalize a pile, you must place the cross-sticks directly over:
A. Center.
B. Supports.
C. Existing cross-sticks.
D. The balance point[][]
C. Existing cross-sticks.
311
When lifting with a sling, you must make sure that the sling is long enough so that the angle formed by the sling from the horizontal is always greater than:
A. 30°.
B. 40°.
C. 45°.
D. 60°.
D. 60°.
312
What type of rope is suitable for using as a tag line?
Polypropylene.
313
What type of synthetic fiber rope conducts electricity when it gets wet?
Nylon.
314
How long should a tag line be?
Long enough so that the worker guiding the load can do so without being in danger.
((Needs to be long enough so that load can be controlled before it is near obstacles))
315
Where should a tag line be attached to a long load?
Near one end.
(Trusses should use two tag lines, one at each end)
316
Where should the worker stand if they are guiding a load of trusses onto a roof?
Out from under the load at a safe distance.
317
What is the minimum width of a wooden scaffold plank?
A. 140mm (5 1/2").
B. 184mm (7 1/4").
C. 235mm (9 1/4").
D. 286mm (11 1/2").
C. 235mm (9 1/4").
318
What is the minimum height of a guardrail?
A. 600mm (24").
B. 750mm (30").
C. 900mm (36").
D. 1020mm (40").
D. 1020mm (40").
319
Above what height does a scaffold require a guardrail?
A. 1200mm (4').
B. 2100mm (7').
C. 2400mm (8').
D. 3000mm (10').
D. 3000mm (10').
320
What is the maximum force that a guardrail is required to resist?
A. 445 N (100 lbs).
B. 550 N (125 lbs).
C. 890 N (200 lbs).
D. 1113 N (250 lbs).
B. 550 N (125 lbs).
321
What is the maxium slope, vertical to horizontal, that is allowed for a work platform?
A. 1:3.
B. 1:5.
C. 1:6.
D. 1:10.
B. 1:5.
322
What is the maxium gap allowed under a toe-board?
A. None.
B. 6 mm (1/4").
C. 13 mm (1/2").
D. 19 mm (3/4").
C. 13 mm (1/2").
323
What is the minimum width allowed for a work platform?
A. 1 plank width.
B. 2 plank widths.
C. 600mm (24")[][]
D. 750mm (30")[][]
B. 2 plank widths.
324
What is the minimum amount that a scaffold plank may project beyond its supports?
A. 100mm (4").
B. 150mm (6").
C. 200mm (8").
D. 300mm (12").
B. 150mm (6").
325
What is the maximum spacing allowed for the supports of scaffold planks if the scaffold is to be used by a bricklayer?
A. 1800mm (6').
B. 2100mm (7').
C. 2400mm (8').
D. 3000mm (10').
B. 2100mm (7').
326
What are the two basic structural components of steel scaffolding?
A. Screw jack and end frame.
B. Coupler pin and cross-brace.
C. End frame and cross-brace[][][]
D. Plank and end frame[][][][][][][][]]
C. End frame and cross-brace.
327
True or False?
## Footnote
Bolts or pins must be placed through the end frames and coupler pins when the scaffold is higher than one unit.
True.
328
Casters for steel scaffolds must have:
A. Rubber tires.
B. Ball bearings.
C. Levelling screws.
D. Brakes[][][][][][][][][]]
D. Brakes.
329
What is the maxium height of a rolling scaffold?
A. 2 times it's minimum base dimension.
B. 2 1/2 times it's minimum base dimension.
C. 3 times it's minimum base dimension[][][]]
D. 3 1/2 times it's minimum base dimension.
C. 3 times it's minimum base dimension.
330
Steel scaffolds fitted with casters also require:
A. Sway braces.
B. Screw jacks[]
C. Base plates[]]
D. Mud sills[][][]]
A. Sway braces.
331
What must be used to level a scaffold on uneven terrain?
A. Panels.
B. Screw jacks.
C. Bricks[][][][][][]
D. Building blocks.
B. Screw jacks.
332
What is required when placing an end frame on a wooden mud sill?
A. Screw jack.
B. Sway brace.
C. Base plate[]]
D. Bolts through the coupling pins.
C. Base plate.
333
What is the maxium allowed height for a rolling scaffold which is being moved by workers on the scaffold?
A. At all times.
B. When workers are more than 1 1/2 times the min base dimension above ground.
C. When workers are more than 2 times the min base dimension above ground[][][]
D. When workers are more than 3 times the min base dimension above ground[][]]
B. When workers are more than 1 1/2 times the min base dimension above ground.
334
What is the maximum allowed slope of the floor when using a rolling scaffold?
A. None, the floor must be flat.
B. Within 3° of level[][][][][][][][][][]
C. Within 5° of level[][][][][][][][][][]
D. Within 10° of level[][][][][][][][][]
B. Within 3° of level.
335
What is the maximum allowed height for a rolling scaffold which is being moved by workers other than those on the scaffold?
A. None, workers are nver allowed on a moving scaffold.
B. 1/2 times the minimum base dimension[][][][][][][][][][][][][]]
C. 2 times the minimum base dimension[][][][][][][][][][][][][][][]
D. 3 times the minimum base dimension[][][][][][][][][][][][][][][]
C. 2 times the minimum base dimension.
336
The type of finish for a wooden ladder is:
A. Oil-based paint.
B. Latex paint[][][][]]
C. Solid color stain.
D. Clear finish[][][][]]
D. Clear finish.
337
Which of the following ladders is freestanding?
A. Extension.
B. Step[][][][][]
C. Single[][][]]
D. Fixed[][][][]
B. Step.
338
A full body harness attached to a life line must be used when working on a ladder-jack scaffold higher than:
A. 2.1m (7').
B. 2.4m (8').
C. 3m (10')[]
D. 4.9m (16').
C. 3m (10').
339
The minimum width of a lumber plank used for a ladder-jack scaffold is:
A. 235mm (9 1/4").
B. 286mm (11 1/4").
C. 350mm (14")[][][]
D. 406mm (16")[][][]
B. 286mm (11 1/4").
340
Center-to-center spacing of the cleats on a single ladder is:
A. 250 mm (10").
B. 300 mm (12").
C. 350 mm (14").
D. 400 mm (16").
B. 300 mm (12").
341
The correct slope for a single or extension ladder is:
A. 1 up the slope of the ladder to 4 horizontal.
B. 2 up the slope of the ladder to 4 horizontal.
C. 3 up the slope of the ladder to 1 horizontal[]
D. 4 up the slope of the ladder to 1 horizontal[]
D. 4 up the slope of the ladder to 1 horizontal.
342
Minimum size for the side rail of a 3 m (10'), job-built single ladder is:
A. 38 x 38 mm (2 x 2).
B. 38 x 64 mm (2 x 3).
C. 38 x 89 mm (2 x 4).
D. 38 x 140 mm (2 x 6).
C. 38 x 89 mm (2 x 4).
343
The minimum distance that a single or extension ladder is required to project above the level to which it gives access is:
A. 500 mm (20").
B. 600 mm (2')[][]
C. 1 000mm (3')[]
D. 1 200 mm (4').
C. 1 000mm (3').
344
The maxium allowable distance between supports for a manufactured plank used in a ladder-jack scaffold is:
A. 2.4 m (8').
B. 3.0 m (10').
C. 4.9 m (16').
D. 7.3 m (24').
D. 7.3 m (24').
345
The maximum depth allowed for notches in the side rails of a job-built ladder is:
A. None.
B. 13 mm (1/2").
C. 25 mm (1")[]]
D. 38 mm (1 1/2").
A. None.
346
Referring to the figure below, the knot, hitch, or bend illustrated is a:
A. Carrick bend.
B. Timber hitch.
C. Clove hitch[]]
D. Trucker's knot.
C. Clove hitch.
347
Referring to the figure below, the eye bolt illustrated is a:
A. Round eye bolt.
B. Shoulderless eye bolt.
C. Long-shanked eye bolt.
D. Washerless eye bolt[][]]
B. Shoulderless eye bolt.
348
Referring to the figure below, which number is "USE THE MAIN LINE"?
9.
349
Referring to the figure below, which number is "STOP"? (Two signals)
2.
17.
350
Referring to the figure below, which number is "RETRACT BOOM"?
6.
351
Referring to the figure below, which number is "LOWER THE LOAD"?
3.
352
Referring to the figure below, which number is "HOIST SLOWLY"?
10.
353
Referring to the figure below, which number is "LOWER THE BOOM AND RAISE THE LOAD"? (Two signals)
14.
15.
354
Referring to the figure below, which number is "EXTEND THE BOOM"?
5.
355
Referring to the figure below, which number is "USE WHIP LINE"? (Two signals)
1.
12.
356
Referring to the figure below, which number is "SWING THE BOOM"?
4.
357
Referring to the figure below, which number is "RAISE THE BOOM AND LOWER THE LOAD"? (Two signals)
7.
11.
358
Referring to the figure below, which number is "HOIST"?
8.
359
Referring to the figure below, which number is "LOWER THE BOOM"?
13.
360
Referring to the figure below, which number is "DOG EVERYTHING"?
18.
361
The formula for finding the area of a rectangle is:
A. Dia x Dia x 0.7854.
B. L x W[][][][][][][][][][][][]
C. L x W x H[][][][][][][][]]
D. Dia x Dia x 0.7854 x H.
B. L x W.
362
The smallest graduation on a metric pocket tape are:
A. Half millimeters.
B. Millimeters[][][][]]
C. Centimeters[][][]]
D. Decimeters[][][]]
B. Millimeters.
363
Which of the layout tools listed below is the best to use as a straight edge?
A. Pocket tape.
B. Outside caliper.
C. Center punch[]]
D. Steel rule[][][][][]
D. Steel rule.
364
The formula for finding the area of a circle is:
A. Dia x Dia x 0.7854.
B. L x W[][][][][][][][][][][][]
C. L x W x H[][][][][][][][]]
D. Dia x Dia x 0.7854 x H.
A. Dia x Dia x 0.7854.
365
A center punch has a tip that is ground to an included angle of:
A. 30°.
B. 45°.
C. 60°.
D. 90°.
D. 90°.
366
True or False?
The imperial system uses meters and millimeters for measurement.
False.
367
The imperial system of measurement uses the following measurements:
A. Millimeters.
B. Meters[][][][]]
C. Inches and feet.
D. Inches and millimeters.
C. Inches and feet.
368
A meter contains:
A. 10 millimeters.
B. 100 millimeters.
C. 1000 millimeters.
D. 10 000 millimeters.
C. 1000 millimeters.
369
True or False?
The hook end of a pocket tape is fixed and cannot move.
False.
370
Which type of measurement instrument has a ring and hook combination at the starting end?
A. Combination square.
B. Pocket tape[][][][][][][][]
C. Zigzag tape[][][][][][][][]
D. Steel tape[][][][][][][][][]]
D. Steel tape
371
True or False?
A chalk line case uses powdered chalk to mark a line.
True.
372
A large square measuring 400 mm by 600 mm is called a:
A. Combination square.
B. Try square[][][][][][][][][]]
C. Rafter and framing square.
D. Sliding T bevel square[][][]]
C. Rafter and framing square.
373
True or False?
A try square has a sliding head that can be used to lay out 90° and 45° angles.
False.
374
True or False?
When using the hand level over a long distance, the level should not be reversed end to end.
False.
375
True or False?
A torpedo level is used in the piping trades.
True.
376
True or False?
A plumb bob can touch the floor when it is suspended.
False.
377
True or False?
Soapstones are used in pipe fabrication.
True.
378
Name three piping materials that can be joined using a threaded joint.
Brass.
Copper.
Plastic[]
379
Describe the advantage of standardization of pipe threads.
Pipe can be manufactured and threaded in one country and the fittings for the same pipe produced in another country.
380
What does ASPT stand for?
American Standard Pipe Thread.
381
What does NPS stand for?
Nominal Pipe Size.
382
What does APS stand for?
Actual Pipe Size.
383
What does OD stand for?
Outside Diameter.
384
What does ID stand for?
Inside Diameter.
385
The exterior thread on a pipe or fitting is called a?
Male thread.
386
The internal thread on a fitting or valve is called a?
Female thread.
387
The number of threads per inch is referred to as the?
Thread pitch.
388
The thread angle on an American Standard Pipe Thread is?
60°.
389
A long thread that does not have any taper is called a?
Running thread.
390
A left and right nipple and coupling may be used in place of a?
Union coupling.
391
The amount of pipe thread necessary to make a tight connection between pipe and fitting is the definition of?
Thread engagement.
392
List four nominal pipe diameters that can be threaded with the same die chasers.
1 inch.
1 1/4 inch.
1 1/2 inch.
2 inches.
393
The number of threads per inch for nominal pipe diameters over 2 1/2 inch is?
8.
394
Allen screws are tightened or loosened with a wrench known as a(n):
A. Allen wrench.
B. Socket wrench.
C. 12-point wrench.
D. Adjustable wrench.
A. Allen wrench.
395
A wrench that has a box-end at one end and an open-end at the other is known as a(n):
A. Doubly duty wrench.
B. Double ended wrench.
C. Open-box wrench[][][][]]
D. Combination wrench[]]
D. Combination wrench.
396
The size of an adjustable wrench is designated by it's:
A. Jaw length.
B. Jaw opening.
C. Total weight[]
D. Overall length.
D. Overall length.
397
All hand tools should be:
A. Kept clean.
B. Varnished occasionally.
C. Greased regularly[][][][][]]
D. Soaked in solvent after each use.
A. Kept clean.
398
Allen or hexagon key wrenches:
A. Must be discarded when they show signs of wear.
B. Can be reconditioned by grinding the worn edge off.
C. Can be bent into shape to suit a particular job[][][][][][]]
D. Are only available in imperial[][][][][][][][][][][][][][][][][][][][][][]
B. Can be reconditioned by grinding the worn edge off.
399
The wrench that provides the best grip on the fastener is the:
A. Open-end wrench.
B. Box-end wrench[][]
C. Adjustable wrench.
D. Crescent wrench[]]
B. Box-end wrench.
400
True or False?
The wrench that should be used on fittings is the open-end wrench or the adjustable wrench.
False.
401
True or False?
The socket square drive is measured in inches on both metric and imperial sockets.
True.
402
Why should a pipe wrench never be used on a hardened surface?
A hardened material will scratch or damage the teeth on a pipe wrench.
403
The size of pliers is determined by the:
A. Length of the handle.
B. Width of the jaw opening.
C. Length of the jaw[][][][][][][]]
D. Overall length[][][][][][][][][][]
D. Overall length.
404
Interlocking slip-joint pliers are also known as:
A. Vise-grip pliers.
B. Water pump pliers.
C. Side grip pliers[][][]
D. Oil pump pliers[][]]
B. Water pump pliers.
405
The only pliers that are suitable for holding items together are:
A. Combination slip-joint pliers.
B. Needle-nose pliers[][][][][][][][]]
C. Side-cutter pliers[][][][][][][][][][]
D. Straight jaw vise-grip pliers[]
D. Straight jaw vise-grip pliers.
406
What kind of back does a skewback saw have?
A. Straight.
B. Crooked.
C. Heavily curved.
D. Sligthly curved.
D. Sligthly curved.
407
True or False?
The number stamped or printed on a saw indicates the number of teeth per 25 mm or inch.
False.
408
True or False?
The teeth of a crosscut saw act as tiny chisels when they cut into wood.
False.
409
True or False?
There is no difference between the number of points and the number of teeth per 25 mm.
False.
410
The numbers 1218 printed on a hacksaw blade indicate:
A. 18" long and 12 teeth per inch.
B. 8" long and 121 teeth per inch.
C. 12" long and 18 teeth per inch[]
D. The date of manufacture - 12th month 18th day.
C. 12" long and 18 teeth per inch.
411
The teeth of a hacksaw blade always have a small amount of set to allow for:
A. Ease of starting the cut.
B. Blade clearence through the cut.
C. Protection of the teeth[][][][][][][][][]]
D. Ejection of the waste[][][][][][][][][][]]
B. Blade clearence through the cut.
412
True or False?
All hand-operated hacksaws use flexible blades.
False.
(Blades can be all hard or flexible types)
413
When storing a hacksaw in a toolbox, you should protect the:
A. Blade.
B. Handle.
C. Other tools.
D. Adjusting screw.
A. Blade.
414
True or False?
Always file on the forward stroke and raise the file on the backstroke to prevent damage.
True.
415
The length of a file is measured:
A. From end to end.
B. From heel to tang.
C. From point to heel.
D. Along the length covered by teeth.
C. From point to heel.
416
A smoother cut can be obtained from a file that is:
A. Single cut.
B. Double cut.
C. Round[][][][]]
D. Three square.
A. Single cut.
417
To prevent files from becoming clogged with metal, you should:
A. Soak them in water.
B. Soak them in gasoline.
C. Coat them with chalk[]]
D. Drag them on the backstroke.
C. Coat them with chalk.
418
Files that are clogged with waste material can be cleaned with:
A. A file comb.
B. A hardened steel pick.
C. Soap and water[][][][][][]]
D. A file card[][][][][][][][][][][]]
D. A file card.
419
Screwdrivers should be used to:
A. Open cans.
B. Pry[][][][][][][]]
C. Scrape[][][][]
D. Turn screws.
D. Turn screws.
420
Screws with a single slot should be turned with a:
A. Torx screwdriver.
B. Blade screwdriver.
C. Phillips screwdriver.
D. Robertson screwdriver.
B. Blade screwdriver.
421
Phillips screwdrivers are available in sizes:
A. 1, 2, 3 and 4.
B. 3/32", 1/8", 3/16", and 1/4".
C. A, B, C, and D[][][][][][][][][][]
D. 0, 00, 001, and 002[][][][]]
A. 1, 2, 3 and 4.
422
If the tip of a blade screwdriver is rounded, it will tend to:
A. Protect the screw head.
B. Climb out of the slot[][][]]
C. Fit a larger variety of screw sizes.
D. Require less force[][][][][][][][][][][][][][]
B. Climb out of the slot.
423
The size of a screwdriver is indicated by the:
A. Overall length of the driver.
B. Width of the tip[][][][][][][][][][][]
C. Length of the blade[][][][][][][]]
D. Size of the screw the driver fits.
C. Length of the blade.
424
Which screwdriver sets and removes screws when you push down on it's handle?
A. Ratchet screwdriver.
B. Spiral-ratchet screwdriver.
B. Spiral-ratchet screwdriver.
425
C-clamps:
A. Exert only a limited amount of pressure.
B. Do not require the use of protective padding.
C. Are useful for small tight areas[][][][][][][][][][][][][][]
D. Are also known as cabinet clamps[][][][][][][][][][]
C. Are useful for small tight areas.
426
To protect your work piece when using a bench vise, you should:
A. Grip it as tightly as possible to prevent movement.
B. Use soft vise jaw-clamps[][][][][][][][][][][][][][][][][][][][][][][][]
C. Grip it very lightly to prevent damage to the piece.
D. Grip your work piece by the corners[][][][][][][][][][][][]]
B. Use soft vise jaw-clamps.
427
The size of vise is usually measured by the:
A. Height of the jaws from the bench surface.
B. Overall weight of the vise[][][][][][][][][][][][][][][]
C. Width of the vise jaws[][][][][][][][][][][][][][][][][][]]
D. Length of the vise handle[][][][][][][][][][][][][][][]
C. Width of the vise jaws.
428
When hammering on a work piece in a vise, you should always drive:
A. Toward the stationary jaw.
B. Toward the moveable jaw.
C. Down toward the bench[]]
D. On either side of the vise.
A. Toward the stationary jaw.
429
When precision drilling on a drill press, the machine vise should be:
A. Held firmly with the left hand.
B. Held firmly with both your hands.
C. Held firmly by a helper[][][][][][][][][]]
D. Bolted or clamped firmly to the drill press table.
D. Bolted or clamped firmly to the drill press table.
430
True or False?
For extra holding power, you should use a 60 cm (24") length of pipe to tighten a vise handle.
False.
(Never overtighten a vise handle with an extension bar)
431
The framing hammer usually weighs:
A. Under 370 grams.
B. 570 to 680 grams.
C. Over 900 grams[]]
B. 570 to 680 grams.
432
Which type of hammer should you use to pull nails?
A. Straight claw.
B. Curved claw[]
B. Curved claw.
433
When nailing boards to lumber thicker than the boards, how long should the nails be?
A. Twice the thickness of the board.
B. Half the thickness of the board[][]]
C. Three times the thickness of the board.
D. One and one-half times the thickness of the board.
C. Three times the thickness of the board.
434
True or False?
A sledge hammer should not be used to drive stakes or drift pins.
False.
435
True or False?
The ball-peen hammer is used to round over bolt threads or rivets.
True.
436
A bar that has a hook at one end and is about 750 mm long is called a:
A. Wonder bar.
B. Wrecking bar.
C. Crowbar[][][][]]
D. Lining bar[][][]
B. Wrecking bar.
437
A long, heavy bar with a wedge point for digging or stripping forms is called a:
A. L stripping bar.
B. Crowbar[][][][][]]
C. Lining bar[][][][]
D. Wonder bar[][]]
B. Crowbar.
438
A bar that is used for most general work and for stripping concrete forms is called a:
A. Wonder bar.
B. Lining bar[][]
C. Crowbar[][][]
D. Wrecking bar.
D. Wrecking bar.
439
A good quality ball-peen hammer is made from:
A. Drop-forged stainless steel.
B. Cast alloy steel[][][][][][][][][][][]]
C. Drop-forged alloy steel[][][][]
D. Cast iron alloy[][][][][][][][][][][][]
C. Drop-forged alloy steel.
440
A ball-peen hammer size is classified by the:
A. Length of the handle.
B. Length of the head[][]
C. Weight of the head[][]
D. Weight of the entire hammer.
C. Weight of the head.
441
A cracked hammer handle must be:
A. Replaced.
B. Taped up to prevent slivers.
C. Used for light hammering only.
D. Soaked to close the crack[][][][]
A. Replaced.
442
The rigid punch that will start an object moving without causing it to swell is a:
A. Slim-line punch.
B. Center punch[][]
C. Prick punch[][][]]
D. Taper punch[][][]
D. Taper punch.
443
True or False?
A low velocity tool must be used unless no low-velocity tool is capable of doing the fastening task.
True.
444
If a powder actuated tool misfires, the operator must hold the tool firmly against the work surface for at least __ seconds.
A. 15.
B. 10.
C. 5[]
D. 0[]
C. 5.
445
A powder-actuated tool fastener must not be driven into steel within ____ of an edge.
A. 26 mm.
B. 20 mm.
C. 16 mm.
D. 13 mm.
D. 13 mm.
446
A low-velocity, powder-actuated tool fastener may not be driven into masonry materials within _____ of an unsupported edge.
A. 25 mm.
B. 50 mm.
C. 75 mm.
D. 100 mm.
C. 75 mm.
447
True or False?
A powder-actuated tool must not be used in an explosive or flammable atmosphere.
True.
448
A powder-actuated tool fastener must not be driven into steel within _____ of a weld.
A. 25 mm.
B. 50 mm.
C. 75 mm.
D. 100 mm.
B. 50 mm.
449
True or False?
A powder-actuated tool must not be pointed at any person.
True.
450
At what speed does the fastener move in a low-velocity, powder actuated tool?
Less than 100m (330ft).
451
At what speed does the pin move when a high-velocity tool is used?
460m (1500ft)
452
What device does a low-velocity tool have that is not found in a high-velocity tool?
Captive piston.
453
Which type of powder-actuated tool is most commonly used in the piping industry?
Hilti low-velocity tool.
454
Besides the captive piston, what are the two safety features of the low-velocity, powder-actuated tool?
A built-in stop ring to absorb impact of firing the tool.
Designed so that it will not fire if held at angle of more than 70° off the work surface.
455
What cartridge colour produces the second strongest impact?
Red.
456
Cartridges are available in two shapes. What are they?
Crimped.
Wadded.
457
Some cartridges for powder-actuated tools are center fired. How are other cartridges fired?
Rim fired.
458
Name the colour of Hilti cartridges from strongest to weakest.
1. Purple (Strongest)
2. Red[][][][][][][][][][][][]
3. Yellow[][][][][][][][][][]
4. Green[][][][][][][][][][]
5. Brown[][][][][][][][][][]
6. Grey (Weakest)[][]
459
When selecting a cartridge for a fastening job, what cartridge do you start with?
Start with the cartridge that has the weakest powder load.
460
True or False?
For fastening into concrete, the tip of the pin must be knurled.
False.
461
True or False?
The washer of a fastener must fit snugly into the tool's chamber.
True.
462
True or False?
Any Hilti tool will accept any kind of fastener.
False.
(The tool uses only fasteners that are designed for it)
463
What must be remembered about the number code on the piston and the nuber code on the nail?
The nail to be used with the tool must bear a number that matches the number code on the piston.
464
About how much penetration is requred for fastening into concrete?
About 25mm (1")
465
Where must a fastening be made into a concrete block?
Into the solid part of the block.
(At least 75mm (3") away from the edge of the block)
466
What is the minimum thickness of steel a fastener may be used on?
5mm (3/16")
467
.What penetration should the tool operator look for when setting a fastener into steel?
12mm (1/2")
468
What is the minimum distance you may set a fastener from a torch cut or weld?
50mm (2")
469
What type of concrete products should not accept a powder-actuated fastener?
Precast concrete containing prestressed cables.
470
What is the rule about spalled areas?
Never use a powder-actuated tool on a spalled surface.
471
List five materials that cannot be fastened onto concrete or steel?
Asbestos.
Brick[][][][]]
Ceramic Tile.
Glass[][][][][][][]
Vitrified Tile.
472
Name a principal advantage of the bench-mounted or portable chain vise?
Both vises distribute gripping pressure evenly around the pipe wall.
473
What is the maximum pipe capacity of the portable tri-stand chain vise?
5".
474
What vise would you select if you wanted to clamp a vise to a 100 mm (4") plank?
Portable Kit Yoke Vise.
475
If a tradesperson is required to attach a vise to an overhead pipe with a diameter of 5", which vise would be suitable for the purpose?
Top Screw Post Chain Vise.
476
What kind of vise comes with two pairs of legs and uses a connecting pipe?
Top Screw Stand Chain Vise.
477
Name the bench-mounted vise that is used for holding long lengths of pipe and has a maximum pipe size capacity of 4".
Open Side Vise.
478
Name the vice that holds and aligns pipe for tacking and is used on mains and risers.
Straight Pipe Welding Vice.
479
What are pipe taps used for?
To cut or restore internal pipe threads.
480
What are dies used for?
To cut external threads on pipe (or rods).
481
What is ment by a receding die?
The width of the die is less than the length of the thread to be cut.
482
What is ment by a full-width die?
The width of the die is equal to the length of the thread to be cut.
483
Name the threader which uses more than one set of dies, is often preferred for small jobs, and threads pipe sizes up to 2".
Exposed Ratchet Drop Head Threader.
484
Name a threader that could be used effectively with power equipment to cut an external thread on 2 1/2" pipe.
Geared Pipe Threader.
485
Name a threader that uses one set of dies to thread pipe between 1" to 2".
Ratchet Threader.
(Jam-proof)[][][][][]]
486
Name the two major classifications of cutters.
Wheel cutter.
Combined wheel-and-roller cutter.
487
When selecting a cutter wheel for a cutting tool, what three important things should be checked with regard to the cutter wheel?
1. Designed for the tool being used.
2. Not blunted or damaged[][][][][][][]]
3. Suited for the material to be cut[]
488
Which type of cutter is used with a power vise?
Wide Roll Pipe Cutter.
489
What type of cutter uses a chain for cutting cast iron pipe?
Soil pipe cutter.
490
What is the pipe capacity of the 4-wheel pipe cutter?
From 3/4" to 2" pipe for one type.
From 2 1/2" to 4" for another type.
491
What is a special advantage offered by a 4-wheel pipe cutter?
Useful for cutting pipe in tight work areas.
492
What is the purpose of a reamer?
To remove the burr from the inside diameter (surface) of a pipe.
493
At what stage of a threading operation is reaming done?
After cutting or drilling and before threading.
494
What type of reamer would be selected for use with a power vise or threading machine?
Straight Fluted Ratchet Reamer.
495
Up to what size pipe can you ream with a spiral reamer?
4".
496
True or False?
If you were reaming a pipe set up in a power vise, you should not use a hand-held spiral reamer.
True.
497
Name the wrench that multiplies the turning force and is idea for loosening seized joints.
Compound Leverage Wrench.
498
Name the wrench that has almost completely replaced the monkey wrench and is ideal for tightening nuts and bolts on flanged fittings and valves.
Adjustable Wrench.
499
To which family of wrenches does the spud wrench belong?
Flat-Jawed Wrenches.
500
Name the standard wrench with an angled opening.
End Pipe Wrench.
501
Name the standard wrench that has a jaw opening parallel to the handle and a narrow hook jaw head.
Heavy-Duty Offset Pipe Wrench.
502
Name the wrench specially designed for polished pipe.
Strap Wrench.
503
Describe two features of the basin wrench.
Spring-loaded jaws for one-hand ratcheting.
Tension plug that holds the had of the tool at any angle up to 90°.
504
Name three uses for thread cutting oil.
Cool the tool and the work piece.
Flush away metal chips[][][][][][][][]]
Lubricate the thread cutter during the threading operation.
505
Name two variations of equipment used to dispense thread cutting oil.
Hand pump.
Oiling unit[]]
506
True or False?
Thread cutting oil can be used as lubrication for threading and servicing hand tools.
False.
507
True or False?
Thread cutting oil is used only during the thread-forming process.
True.
508
Referring to the figure below, which dimension correctly indicates thread pitch?
A. A.
B. B.
C. C.
D. D.
A. A.
509
Referring to the figure below, which is the correct way to wind up a steel tape?
A. Method A.
B. Method B.
A. Method A.
510
Referring to the figure below, the screw head illustrated below is a:
A. Phillips head.
B. Robertson head.
C. Torx head[][][][][][]
D. Star head[][][][][][]
C. Torx head.
511
Referring to the figure below, name the parts of the screwdriver shown.
A.
B.
C.
D.
E.
F.
A. Tip.
B. Blade.
C. Ferrule.
D. Head[]]
E. Handle.
F. Length of blade.
512
Referring to the figure below, which illustrations of slot driver tips and screws depict a correct fit?
C.
D.
513
Referring to the figure below, identify the screwdriver tips shown.
A.
B.
C.
D.
E.
A. Robertson.
B. Slot[][][][][][]]
C. Phillips[][][]]
D. Clutch[][][][]
E. Torx[][][][][][]
514
Referring to the figure below, identify the vises.
A. Open Side Vise.
B. Angle Pipe Welding Vise.
C. Top Screw Bench Chain Vise.
D. Portable Tri-Stand Yoke Vise.
E. Bench Yoke Vise[][][][][][][][][][]]
F. Straight Pipe Welding Vise[][]
G. Portable Kit Yoke Vise[][][][][]]
515
Referring to the figure below, identify the threaders shown.
A.
B.
C.
D.
A. Quick-Opening Threader.
B. Jam-Proof Ratchet Threader.
C. Ratchet Drop Head Threader.
D. Geared Pipe Threader[][][][][][]
516
Referring to the figure below, identify the cutters shown.
A.
B.
C.
D.
E.
A. Heavy-Duty, Four-Wheel Pipe Cutter
B. Hinged Pipe Cutter[][][][][][][][][][][][][][][][]
C. Heavy-Duty Cutter, Single Wheel-And-Roller Convertible To Three-Wheel Cutter
D. Wide Roll Cutter[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
E. Soil Pipe Cutter[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
517
What meaning would the initials PRV have other than "pressure-reducing valve"?
Pressure-relief valve.
518
How does a pressure reducing valve work?
Opens or closes to admit more or less water as demanded by a fixture.
519
What are some applications for PRVs in a plumbing system?
Reduce high municipal main pressure to an acceptable operating range.
Supply pressure to low operated fixtures and appliances[][][][][][][][][][][][][][]]
Supply pressure to domestic hot water heating boilers and storage tanks.
520
Why must a strainer be installed on the main or high pressure side of a PRV?
To prevent any dirt from becoming lodged between the PRV seat and disk.
521
Why should a pressure-relief valve be installed on the house side of a PRV when it is used in the supply to a heating boiler?
Drop pressure to boiler.
522
Explain "No-flow pressure"
The pressure maintained in the system by a reducing valve when no water is flowing.
523
Explain "Reduced pressure fall-off"
The change in the reduced flow pressure below the no-fow pressure which is needed to open the valve.
524
Explain "Reduced flow pressure"
The pressure maintained by the valve when water is flowing.
525
Explain "Series" - Relative to PRV installations.
Two or more valves are installed in a line.
(A.k.a two-stage or multi-stage reduction)
526
Explain "Parallel" - Relative to PRV installations.
Two or more valves are installed to serve the needs of one large supply main.
527
Explain why a series installation of PRVs might be necessary.
To allow for pressure reduction capacity greater than the reduction capabilities of a single valve.
528
Explain why a parallel installation of PRVs might be necessary.
In order to allow the use of two smaller, cheaper valves instead of one large, expensive valve.
529
Why might one PRV in a parallel installation be set at a higher opening pressure than the other?
To prevent both valves from operating during low demand periods.
530
Explain what is ment by the term "domestic" hot water.
Intended to serve domestic needs such as cooking, dishwashing, laundry.
531
Is the water in a domestic hot water tank under pressure? If so, what pressure?
Yes.
Same pressure as the water main.
(Assuming the absence of a pressure-reducing valve)
532
State the working and test pressures for a domestic hot water tank.
Working Pressure: 127.5 PSI
Test Pressure[][][][]: 300 PSI[]
533
State two reasons for installing a control valve on the cold supply to a tank.
Turn off water to the tank should it be necessary to drain it or replace it.
## Footnote
Turn off and therefore isolate the hot water supply piping to carry out such repairs as faucet washer replacement without turning off the water to the entire building. If cold water cannot get into the tank, hot water will not get out.
534
Explain why the cold water must always enter near the bottom of the tank.
To ensure that cold water is not mixed with the hottest water at the top of the tank.
535
Explain the term "sacrificial anode."
A magnesium rod used to help reduce corrosion of the tank by gradually corroding itself (instead of the tank).
536
Name three materials that can be applied to the inside of the tank wall as a protective coating against corrosion.
Galvanizing.
Glass[][][][][][]
Stone[][][][][]]
537
The two types of electric heaters are?
Immersion type.
Strap on[][][][][][][]
538
Explain why a temperature and pressure-relief valve is installed on a hot water tank.
To provide protection against uncontrolled temperature and/or pressure.
539
The two main tank types are designed to heat up by ___ or \_\_\_\_\_\_\_\_.
Gas.
Electricity.
540
State two advantages of an electrically-heated tank.
Noisless heating.
No heat lost in transfer to the water.
541
State two advantages of a gas heated tank.
Relatively high recovery rate when all of the hot water is drawn off.
The tank size can be generally smaller than an electric tank for the same service.
542
How can a cost comparison be made between gas and electricity as a heating source?
It is the number of BTUs being paid for that determines the cost factor.
543
Name four areas of domestic hot water tank installation on which the current BC Plumbing Code rules.
Pressure Requirements.
Safety (The provision and location of safety devices including valves and controls)
The quality of tank manufacture[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
The termination of a drain pipe from a safety valve[][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
544
Name seven essential operating parts of the temperature and pressure-relief valve.
Extension Thermostat.
Pop Action Construction.
Spring[][][][][][][][][][][][][][][][][]
Temperature Sensing Zone.
Test Lever[][][][][][][][][][][][][][][][]
Thermostat[][][][][][][][][][][][][][][]
545
Explain the function of the temperature-sensing element.
Activates the relief mechanism and permits the extremely hot water to escape.
546
Explain the function of the temperature relief on a temperature-and-pressure-relief valve.
When the tank temperature approaches the danger zone (210°F), the thermostat expands and lifts the valve disc from the seat, allowing hot water to escape and cooler water to replace it in the tank.
547
Explain the function of the pressure-relief on a temperature-and-pressure-relief valve.
When the tank pressure approaches the danger zone (150 PSIG), the thermostat expands and lifts the valve disc from the seat, allowing hot water to escape and cooler water to replace it in the tank.
548
Explain the danger should the temperature in a domestic tank reach 212°F or greater.
Flashing of steam at faucets and any outlet in the system.
549
State the standard temperature and pressure settings of a temperature-and-pressure-relief valve.
Pressure = 150 PSIG.
Temperature = 210°F.
550
Explain why the temperature-and-pressure-relief valve should be located on the hot discharge at the top of the tank rather than on the cold supply.
Tank temperature could become considerably hotter than the 210°F standard temperature relief setting because of a possible temperature lag between the valve and the tank.
551
State the boiling points of water when subjected to the following pressures:
50 PSIG.
100 PSIG.
50 PSIG = 297°F.
100 PSIG = 337°.
552
State the location of the PRU sensing element within a hot water tank.
Immersed in the upper 150 mm of water in the tank.
553
State the distance from the floor for the termination of a T & P valve discharge pipe.
Minimum = 6".
Maxium = Specified by regulation.
554
State the diameter of the relief valve discharge pipe.
3/4".
555
Give an accurate definition of the word "soldering."
A process by where two or more pieces of metal are joined by means of an alloy that has a lower melting point than the metals being joined.
556
The term used when a soldered joint lets go under stress is defined as?
Creep.
557
The term used to describe solder being drawn into a solder joint is ______ action.
Capillary.
558
Capillary action depends on the joint having a fairly ____ fit.
Close.
559
Two groups of solder are?
Soft solder.
Hard solder.
560
Solder having alloys that melt below 840°F (449°C) are known as ___ solders.
Soft.
561
When specifying a soft solder, the ___ content is always mentioned FIRST.
Tin.
562
50-50 solder starts to melt at ___ °F and flows freely at ___ °F.
360.
415[]
563
For service temperatures up to 250°F (121°C) where high strength is required, a ___ solder should be used.
95-5.
564
95-5 solder melts at ___ °F and flows freely at ___ °F.
450.
465.
565
Another term for hard soldering is \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.
Brazing.
| (Silver Brazing)
566
Sil-Fos solder melts from ____ °F to ____ °F.
1185.
1300.
567
Can Easy-Flo 45 solder be used to join together copper and steel?
Yes.
568
Can Sil-Fos be used on iron or steel? If not, explain why.
No.
(The phosphorus will make the joint brittle)
569
To what group of solder does Easy-Flo 45 belong?
Silver solder.
570
List six steps in the preparation of a soft solder joint.
1. Accurate measurements.
2. Cutting[][][][][][][][][][][][][][][][]
3. Removing burrs[][][][][][][][]
4. Cleaning[][][][][][][][][][][][][][]
5. Fluxing[][][][][][][][][][][][][][][]
6. Assembling[][][][][][][][][][][]
571
At the _____ temperature, the brazing filler rod is completely melted.
Liquidus.
572
The stregth of a brazed joint depends to a large extent on the ________ between the pipe and the copper fitting.
Clearence.
573
If the brazing alloy fails to flow or has a tendency to ball up, it indicates _______ on the metal surfaces.
Oxidation.
574
95-5 solder contains 95% tin and 5% \_\_\_\_\_\_\_.
Antimony.
575
What soft solder would be acceptable for service in contact with potable water?
Non-lead.
576
A _______ oxyacetylene flame is best suited for silver brazing.
Reducing.
577
Any substance or mixture used to promote fusion is the definition of?
Flux.
578
The flux should be ____ at the temperature of molten solder.
Fluid.
579
The selection of flux is dependent on three things.
1. Method of soldering.
2. The condition of the surface.
3. Type of metal to be soldered.
580
Two main types of fluxes are:
1. Corrosive.
2. Non-corrosive.
581
Non-corrosive fluxes mainly have a ______ action, protecting the metal from oxidation.
Covering.
582
Corrosive fluxes are capable of ________ the oxide from the metal.
Removing.
583
Corrosive fluxes should be _________ after the joint has cooled.
Washed off.
584
The flux most frequently used to solder copper tubing is?
Solder paste.
585
One of the fluxes used in silver brazing is?
Borax.
586
Does Sil-Fos require a flux when joining:
1. Copper to copper?
2. Copper to brass[]?
1. No.
2. Yes.
587
The main purpose of a valve is to:
A. Change direction of piping.
B. Increase pressure in lines[]]
C. Control the flow in a system.
D. Control the temperature in a system.
C. Control the flow in a system.
588
Bronze is common material used to make valves. Bronze valves are usually:
A. Available in smaller sizes only.
B. Available in larger sizes only[][]
C. Used in high pressure applications.
D. Susceptible to corrosion[][][][][][][][][][]
A. Available in smaller sizes only.
589
Malleable iron is a tough material used to make stop valves that are used in:
A. High temperature system.
B. Gas distribution system[][]]
C. Extremely cold environments.
D. Chemical waste lines[][][][][][][]]
B. Gas distribution system.
590
Valves used in severe applications may have seating surfaces, stems and disks made from:
A. Stainless steel.
B. Duriron[][][][][][]]
C. Brass[][][][][][][][]]
D. Copper[][][][][][]]
A. Stainless steel.
591
Valves used in piping that carries highly corrosive liquids may have seating surfaces, stems and disks made from:
A. ABS.
B. Polyethylene (PE).
C. Polyvinylidene fluoride (PVDF).
D. Hardened rubber[][][][][][][][][][][][]
C. Polyvinylidene fluoride (PVDF).
592
If valves are stamped with two numbers, the first number will indicate the:
A. Cold service rating.
B. Retail price[][][][][][][]]
C. Steam service rating.
D. Safe working pressure.
C. Steam service rating.
593
Piping systems where there is a risk of excessive heat or fire will use valves made from:
A. Poly-vinyl chloride (PVC).
B. Aluminum[][][][][][][][][][][][][][]
C. Tempered polyethylene (PE).
D. Steel[][][][][][][][][][][][][][][][][][][][][][]
D. Steel.
594
The most common factor that causes the pressure rating of a valve to drop drastically is:
A. Rust.
B. Incorrect installation.
C. Increased temperature.
D. Sudden changes in flow.
C. Increased temperature.
595
Steam ratings indicate:
A. Safe working pressure.
B. Maximum operating pressure.
C. A class of service[][][][][][][][][][][]
D. Minimum working pressures[]
C. A class of service.
596
If a valve only has a manufacturer's name and size indicated, where would you check for further information about service ratings?
A. With a plumbing engineer.
B. Inside the valve body[][][][]]
C. On project drawings[][][][][]]
D. Manufacturer's specification sheets.
D. Manufacturer's specification sheets.
597
Based on the following information:
3.
150.
200 WOG.
The cold service rating of this vale is:
A. Not indicated.
B. 200 psi[][][][][][]
C. 150 psi[][][][][][][]
D. 3 atmospheres.
B. 200 psi.
598
Based on the following information:
3.
150.
200 WOG.
The pipe size is:
A. 150mm.
B. 200mm.
C. 3"[][][][][][]
D. WOG[][][]
C. 3".
599
Based on the following information:
3.
150.
200 WOG.
The steam rating of this valve is:
A. 150 psi.
B. 200 psi.
C. 3 atmospheres.
D. Not indicated[]]
A. 150 psi.
600
Globe valves, gate valves and plug valves are all examples of:
A. Pneumatic valves.
B. Manual valves[][][]]
C. Hydraulic valves[]]
D. Solenoid valves[][]
B. Manual valves.
601
The valve that closes when the flow in a pipe line is reversed is the:
A. Relief.
B. Butterfly.
C. Check[][]
D. Gate[][][]
C. Check.
602
Valves on domestic hot water supply tanks and heaters include:
A. Gate, Check, Safety.
B. Pressure, Temperature, Vacuum Relief.
C. Swing Check, Butterfly, Temperature Relief.
D. Globe, Plug, Pressure Relief[][][][][][][][][][][][][][]
B. Pressure, Temperature, Vacuum Relief.
603
Mechanical devices commonly used to prevent backflow in plumbing systems include:
A. Spring Check Angle Valves, Vacuum Breakers.
B. Pressure Reducing Valve Stations, Anti-Siphonage Check Valves.
C. Double Check Valve Assemblies, Pressure Vacuum Breakers[][][][]
D. Double Swing Check Valve Stations, Atmospheric Pressure Relief Valves.
C. Double Check Valve Assemblies, Pressure Vacuum Breakers.
604
All valves cause some degree of flow loss due to friction, even in the full-open position. Which type of valve causes the greatest reduction in flow even when the valve is open?
A. Globe valve.
B. Gate valve[]]
C. Swing check valve.
D. Plug valve[][][][][][][][]]
D. Plug valve.
605
Which type of valve is often referred to as a "cock" or "bibb"?
A. Globe valve.
B. Angle valve.
C. Spring check valve.
D. Plug valve[][][][][][][][]]
A. Globe valve.
606
A type of valve that may be used in oil or gas lines where fine throttling control is needed is the:
A. Solid-wedge gate valve.
B. Spring angle valve[][][][]]
C. Needle-type globe valve.
D. Needle plug valve[][][][][][]]
C. Needle-type globe valve.
607
To ensure that sediment does not collect around the valve seat and moving components, valves are normally installed:
A. Downstream from filters, perpendicular to flows.
B. At least 3 pipe diameters upstream from an elbow.
C. On horizontal lines in the upright position[][][][][][][][][]]
D. A minimum of 10 pipe diameters downstream from an elbow.
C. On horizontal lines in the upright position.
608
The valve which must be installed in the upright position is the:
A. Globe or gate.
B. Pressure relief or temperature relief.
C. Check or float[][][][][][][][][][][][][][][][][][][][]]
D. Butterfly or gate[][][][][][][][][][][][][][][][][][]]
C. Check or float.
609
In a system exposed to freezing temperatures, globe valves should never be installed:
A. Without extra insulation.
B. Upside down[][][][][][][][][][]
C. Within 3 pipe diameters of an elbow.
D. Perpendicular to flow[][][][][][][][][][][][][][]
B. Upside down.
610
Valves must be positioned carefully, particularly at any sharp change in direction of piping, because they cause:
A. Turbulence.
B. Decreased pressures.
C. Increase temperatures.
D. Constant shock to a system.
A. Turbulence.
611
When installing valves downstream from elbows, the valve should be located:
A. 10 pipe diameters from the nearest fixture.
B. 3 pipe diameters from the nearest hanger or support.
C. 10 pipe diameters from the elbow[][][][][][][][][][][][][][][][][][]]
D. 3 pipe diameters from any pipe joint[][][][][][][][][][][][][][][]]
C. 10 pipe diameters from the elbow.
612
Flow pressure should be _____ the disk of a check valve.
A. Around.
B. Through.
C. Under[][]]
D. Over[][][]]
C. Under.
613
Plastic water service pipes (for cold water only) require which valve at the building end?
A. Shut-off.
B. Vacuum relief.
C. Butterfly[][][][][]]
D. Check[][][][][][][]
D. Check.
614
Every water service pipe shall be provided with a ______ valve where the pipe enters the building.
A. Shut-off.
B. Needle valve.
C. Stop-and-waste valve.
D. Backflow preventer[][]]
A. Shut-off.
615
Pressure reducing valves are installed in domestic applications to reduce incoming water to between:
A. 35 kPa to 55 kPa (5 psi to 8 psi).
B. 69 kPa to 103 kPa (10 psi to 15 psi).
C. 172 kPa to 228 kPa (25 psi to 33 psi).
D. 344 kPa to 413 kPa (50 psi to 60 psi).
D. 344 kPa to 413 kPa (50 psi to 60 psi).
616
A _____ valve and a _____ valve must be installed on the discharge side of a sewage pump.
A. Check, Gate.
B. Pressure relief, Globe.
C. Gate, Stop-and-waste cock.
D. Butterfly, Vacuum Relief[][][][]
A. Check, Gate.
617
Referring to the figure below, identify the type of valve shown.
A. Swing check valve.
B. Pressure relief valve.
C. Butterfly valve[][][][][][]
D. Plug valve[][][][][][][][][]
D. Plug valve.
618
Referring to the figure below, if the valve were installed in a water supply line, the water flow would be _______ and the valve would be \_\_\_\_.
A. Stopped, shut.
B. Throttled, half-open.
C. Full flow, fully open[]]
D. Throttled, quarter-open.
A. Stopped, shut.
619
Referring to the figure below, identify the type of valve shown.
A. Needle valve.
B. Solid-wedge gate valve.
C. Plug-type globe valve[][]
D. Angle valve[][][][][][][][][][][]
B. Solid-wedge gate valve.
620
True or False?
Referring to the figure below, the valve shown is closed and no water can travel through it.
True.
621
Referring to the figure below, identify the type of valve shown.
A. Spring check valve.
B. Solid-wedge gate valve.
C. Needle-type globe valve.
D. Disk-type globe valve[][][]
D. Disk-type globe valve.
622
Referring to the figure below, identify the type of valve shown.
A. Plug-type gate valve.
B. Ball valve[][][][][][][][][][]]
C. Spring check valve[]]
D. Lift check valve[][][][]]
D. Lift check valve.
623
Referring to the figure below, identify the type of valve shown.
A. Spring check angle valve.
B. PVC check valve[][][][][][][][]
C. Vacuum relief valve[][][][][]]
D. Swing check valve[][][][][][]]
B. PVC check valve.
