Fourth Year - WHATEVER YOU DO - DO NOT DELETE THIS FOLDER OKAY Flashcards
When did Canada’s system for model code development and maintenance begin?
In the 1930’s.
Who decides the content of model codes?
The volunteer members.
What are the building codes in Canada generally concerned with?
Fire safety.
Health[][][][]
Structural sufficiency.
Which code may contain retroactive requirements?
Fire codes.
When does a standard become enforceable?
By referencing a standard in a code.
Name five standard-writing organizations.
BNQ.
CGA.
CGSB.
CS[][][]]
ULC[][]
Which two Canadian cities have jurisdiction over construction?
Montreal.
Vancouver.
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?
At least two years before the end of the cycle.
When is a task group established?
When a proposal is complex and requires significant analysis.
What options are available to a standing committee regarding a proposed change?
Amend a warding.
Approve a proposal.
Defer the proposal for more information or research.
Reject a proposal[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
How long is a code cycle?
Five years.
How long is the public comment period?
Three months.
When does a proposed change move forward?
After all comments are satisfactorily resolved.
How are the National Model Code documents developed and maintained?
Through a broad-based consensus process.
The National Plumbing is part __ of the National Building Code.
7.
What plumbing code is the model that the provinces and territories used to develop their plumbing codes?
National Plumbing Code.
Codes are developed in Canada to provide minimum safety requirements to ensure:
The health and safety of our citizens.
What are some of the other codes you may be required to follow?
Boiler Pressure Vessel Code.
Natural Gas and Propane Installation Code.
Pressure Vessel Code[][][][][][][][][][][][][][][][][][][][]
NFPA 13[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
NFPA 13D[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
NFPA 13R[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
How many Standing Committees are there under the CCBFC?
7.
Give a brief description of the main function of each of the following:
CGA.
CSA.
ULC.
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.
What is the annual cost of fire in Canada?
$11 billion.
What is one of the primary objectives of the National Building Code?
To provide a minimum level of fire safety for building occupants.
When was the NFPA first organized?
1896.
The NFPA 13 is the standard for the ________________________.
Installation of sprinkler systems.
Where is the Canadian NFPA regional office located?
Ottawa.
What is the abbreviation for the Canadian Standards Association?
CSA.
What is the abbreviation for the American Society of Mechanical Engineers?
ASME.
What is the abbreviation for the American National Standards Institute?
ANSI.
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.
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.
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.
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).
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.
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.
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.
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.
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).
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).
Glass piping can withstand:
A. Sudden shocks.
B. Alkalis[][][][][][][][][]]
C. High and low temperatures.
D. All acids[][][][][][][][][][][][][][][][][][]]
C. High and low temperatures.
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).
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).
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.
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.
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.
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.
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.
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.
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’).
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.
Schedule 40 pipe is:
A. Extra strong.
B. Double extra strong.
C. Standard wall thickness.
C. Standard wall thickness.
Schedule 80 pipe is:
A. Extra strong.
B. Double extra strong.
C. Standard wall thickness.
A. Extra strong.
Schedule 160 pipe is:
A. Extra strong.
B. Double extra strong.
C. Standard wall thickness.
B. Double extra strong.
Schedule numbers indicate approximate values of pressure-stress ratios times:
A. 10.
B. 100.
C. 1,000.
D. 10,000.
C. 1,000.
A schedule 80S pipe would be:
A. Stainless steel.
B. Aluminum[][][][]]
C. Carbon steel[][]
D. Monel steel[][]]
A. Stainless steel.
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.
Soft copper tubing is available in:
A. Large diameters only.
B. Coils[][][][][][][][][][][][][][][]
C. Rigid lengths[][][][][][][][]
D. Small diameters only[]
B. Coils.
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”.
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”.
What colour is type L tubing?
A. Blue.
B. Red[]
C. Yellow.
D. White[]
E. Green[]
A. Blue.
What colour is Type K tubing?
A. Blue
B. Red[]
C. Yellow.
D. White[]
E. Green[]
E. Green.
What colour is DWV tubing?
A. Blue.
B. Red[]
C. Yellow.
D. White[]
E. Green[]
C. Yellow.
What colour is Type M tubing?
A. Blue.
B. Red[]
C. Yellow.
D. White[]
E. Green[]
B. Red.
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.
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.
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.
Some plastics are protected from exposure by:
A. Heat treatment.
B. Dark colour dyes.
C. Neoprene skins[][]
D. Special chemicals.
B. Dark colour dyes.
True or False?
The colour of a plastic pipe indicates its pressure rating.
False.
What colour is ABS plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
Black.
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.
What colour is PB plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
D. Grey.
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.
What colour is PP plastic pipe?
A. Grey, white, blue.
B. Black, yellow, orange.
C. Grey, black[][][][][][][][][][]
D. Grey[][][][][][][][][][][][][][][]]
E. Black[][][][][][][][][][][][][][][]
C. Grey, black.
Referring to the figure below, what is the manufacturer’s brand name?
Plasco.
Referring to the figure below, what is the pipe diameter?
3/4” OD.
Referring to the figure below, what is the ASTM material classification?
PB 2100.
Referring to the figure below, what is the ASTM specification document number?
D-3309.
Referring to the figure below, what is the Standard Dimension Ratio?
SDR 11.
Referring to the figure below, what is the temperature rating?
82°C.
Referring to the figure below, what is the pressure rating?
680 kPa.
Referring to the figure below, what is the date of manufacture?
870415.
Referring to the figure below, the thickness of the pipe wall would be calcularted using ___ and ___.
3/4” OD and SDR 11.
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.
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.
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.
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.
To connect piping or other fittings made from different materials or with different jointing desings, use:
A. An adaptor.
B. A transitory coupling.
C. A close nipple[][][][][][]
D. A two-piece flange[][]
A. An adaptor.
Hangers hold the weight of a pipe from:
A. Above.
B. Below[]
C. Adjacent.
D. Inside[][][]
A. Above.
Hangers are mounted next to fittings to prevent additional stress on the:
A. Joists.
B. Supports.
C. Foundation.
D. Joints[][][][][]]
D. Joints.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Vertical risers gernally 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.
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.
To lubricate and seal threaded piping, you should use:
A. Teflon thread.
B. Pipe dope[][][]
C. Silicone[][][][][]
D. Plumber’s putty.
B. Pipe dope.
Two common forms of Teflon thread sealents are liquid and:
A. Gelatin.
B. Spray[][]
C. Stick[][][]
D. Tape[][][]
D. Tape.
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.
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.
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.
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.
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.
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.
Metal gaskets are usually found in:
A. Fixture drains.
B. Industrial applications.
C. Medical fixtures and fittings.
D. Hot water piping[][][][][][][][][][]
B. Industrial applications.
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.
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.
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.
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.
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.
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.
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.
True or False?
A cross fittinig can be installed when drainage piping runs inside a house.
False.
True or False?
A sanitary T fitting can be used to change the direction of horizontal flow in a drainage system.
False.
True or False?
A vertical drainage pipe shall not carry both sewage and storm water.
True.
True or False?
Every pipe in a drainage system shall have a minimum downward slopd of 1:50.
False.
True or False?
Polyethylene pipe can only be used for water service applications.
True.
True or False?
Cast iron soil pipe and fittings shall not be used in a water system.
True.
True or False?
Galvanized steel piping is no longer permitted in any part of a water distribution system.
False.
True or False?
Coper tubing should not be used to drain urinals.
True.
True or False?
The pressure ratings of CPVC piping decrease as the operating temperatures of flows increase.
True.
True or False?
Screwed cast iron water fittings shall not be used in a drainage system.
True.
True or False?
Lead waste pipe is not permitted in water systems or for building sewars.
True.
True or False?
Brass threaded fittings should be used on any visible water drain lines inside a building.
False.
True or False?
When a pipe is reduced, the reducer fitting shall be installed so that the system can be completely drained.
True.
True or False?
Removable cleanout plugs for ferrous metal fittings must be made from ferrous metal.
False.
“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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Before they are joined, all cut pipe ends should be:
A. Deburred.
B. Flared[][][]]
C. Beveled[][]
D. Polished[]]
A. Deburred.
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.
Bronze is common maeterial 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.
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.
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.
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).
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.
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.
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.
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.
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.
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.
Based on the following information:
3.
150.
200 WOG.
The pipe size is:
A. 150mm.
B. 200mm.
C. 3”[][][][][][]
D. WOG[][][]
C. 3”.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Flow pressure should be _____ the disk of a check valve.
A. Around.
B. Through.
C. Under[][]]
D. Over[][][]]
C. Under.
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.
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.
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).
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.
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.
Referring to the figure below, it is a:
A. 45° elbow.
B. Three-way elbow.
C. 45° wye[][][][][][][][][]
D. DWV tee[][][][][][][][]
C. 45° wye.
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.
Referring to the figure below, it is a:
A. Bushing.
B. Roll stop coupling.
C. Copper adaptor[][]
D. MJ coupling[][][][][]
B. Roll stop coupling.
Referring to the figure below, it is a:
A. Compression fitting.
B. 3-piece coupling[][][]
D. Gasketed union[][][]]
E. Insert fitting[][][][][][][]
A. Compression fitting.
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.
Referring to the figure below, it is a:
A. U-Clamp.
B. Riser clamp.
C. Two-hole clip.
D. Concrete insert.
B. Riser clamp.
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.
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.
Referring to the figure below, it is a:
A. Trapeze hanger.
B. Roller hanger[][]]
C. Pipe saddle[][][][]
D. Spring hanger[]]
B. Roller hanger.
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.
Referring to the figure below, it is a:
A. Conrete insert.
B. Beam clamp[][]]
C. Spring hanger[]
D. Concrete flange.
A. Conrete insert.
Referring to the figure below, it is a:
A. Concrete insert.
B. Clevis hanger[][]
C. Wall pipe support.
D. Spring hanger[][][]
D. Spring hanger.
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.
Referring to the figure below, it is a:
A. Beam clamp.
B. Riser clamp[]]
C. Rod and turnbuckle.
D. Insulation shield[][][]]
A. Beam clamp.
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.
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.
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.
True or False?
Referring to the figure below, the valve shown is closed and no water can travel through it.
True.
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.
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.
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.
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.
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.
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.
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[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
A person who instructs, directs and controls workers in the perfromance of their duties is the definition of?
Supervisor.
A thing or condition that may expose a person to a risk of injury or occupational disease is the definition of?
Hazard.
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.
An employer must report a serious injury to the WCB within what lenght of time?
Within 3 days of the injuries occurence.
What is required if there is a danger of tools or materials falling off the edge of a work platform?
Toeboards.
What is the pressure limitation for compressed air when blowing dust from a worker’s clothing?
70 kPa guage (10 psig).
Within what time period must a worker report an accident or injury?
Immediately.
Who must provide the workers the information, instruction, training, and supervision necessary to ensure the health and safety of those workiers in carrying out their work and to ensure the health and safety of other workers at the workplace?
The employer.
Loose clothing.
(Just need to read)
Loose fitting clothing may be caught by moving equipment or other sationary objects.
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.
Loud noises.
(Just need to read)
When working in a noisy area wear hearing protectors.
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.
Someone working overhead.
(Just need to read)[][][][][][][][][]]
If someone is working above you, be extremely cautious and wear a hardhat.
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.
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.
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.
Storing oily rags.
(Just need to read)
Oily and greasy rags should be stored in a fireproof receptacle.
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.
How often are hearing tests required?
Every year.
A working directing traffic must wear?
High visibility apparel.
Clean respirable air in a confined space, means an atmosphere which is equivalent to clean outside air containting __ % oxygen.
20.
An employer must ensure that a fall protection system is used when a fall of __ feet (__ m) or more may occur.
10.
3[]
What is the maximum free fall limit for a personal fall arrest system without a shock absorber?
4 feet (1.2 m).
Are combination locks allowed to be used for a lockout?
No.
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.
Shoring should extend ____ above ground level.
A. One foot.
B. Two feet[]
C. Three feet.
D. Four feet[]]
A. One foot.
When can silver solder containing cadmium be used?
Must not be used without prior written approval from the board.
How many fire extinguishers are required where welding or cutting is done?
At least one fire extinguisher of a suitable type and capacity.
A worker must not work from the top __ rungs of a ladder.
A. One.
B. Two.
C. Three.
B. Four[]]
B. Two.
True or False?
Only a qualified person may handle or use a powder actuated tool.
True.
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.
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.
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.
What is the best general fire extinguisher currently available?
Triplex dry chemical.
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.
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.
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.
State two reasons why it is important to obtain dimensions by measuring drawings.
- Drawing is not necessarily drawn to scale.
- Shrinkage may occur in the reproduction process.
State reasons why it is not usually necessary to measure drawings for dimensions.
All the necessary dimensions are usually included on the blueprints.
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.
State why arithmatic is necessary occassionally for finding dimensions.
To obtain dimensional (size) information.
Why are piping symbols used?
To visually represent pipes, fittings etc.
State two basic requirements for symbols.
Easy to draw.
Must be simple.
Why are single-line symbols usually used in piping drawings?
Because they are the simpilest and easiest to draw.
True or False?
Lengths of valves and fittings in single-line drawings are drawn to scale.
False.
True or False?
Flanged or welded valves and fittings in double-line drawings are drawn to scale.
True.
List the three views normally used in orthographic piping drawings.
- Front.
- Plan[]
- Right.
State one advantage of orthographic respresentations.
It pinpoints the exact location of equipment.
State two limitations of orthographic representations.
- Not sufficient for systems with many overlapping pipes, valves and fittings.
- Two views must always be used, making interpretation difficult when the piping system is intricate.
State how an isometric piping drawing can be recognized?
- Lines are drawn at an angle of 30° to the horizontal.
- Vertical lines are drawn vertically[][][][][][][][][][][][][][][][][]]
State the number of dimensions shown by an isometric drawing.
Three.
State one advantage of isometric piping drawings over orthographic piping drawings.
They are easier to interpret.
State the type of information contained in notes appearing on drawings.
Written descriptions of material/equipment/valves shown in symbol form on drawing.
State where the scale of a drawing usually appears.
Bottom of drawing.
Title panel[][][][][][][]]
State what is meant by “A1 of 4.”
First architectural drawing of four.
In flow diagrams how are larger pipes with larger flow shown?
By heavier lines.
Piping drawings are indicated by:
A. A.
B. S.
C. M.
D. E.
C. M.
True or False?
Gate valves are commonly used in drainage, waste and vent systems.
False.
True or False?
A large hot water heating system requires a large daily supply of fresh water.
False.
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.
Vacuum breakers prevent:
A. Excessive pressure.
B. Back siphonage[][][]]
C. Excessive temperature.
D. Thermal expansion[][][]]
B. Back siphonage.
List five types of information shown on a plot plan.
- Contour lines.
(Topography)[][]
- Dimensions[]
- Elevations of specific points.
- Locations of public utilities[]]
- Property line[][][][][][][][][][][][][]]
List five types of information shown on a site plan.
- Contour lines showing existing slope.
- Dimensions of lot[][][][][][][][][][][][][][][][][]]
- Elevations of specific points[][][][][][][][]
- Location of building/public utilities[][]]
- Property line[][][][][][][][][][][][][][][][][][][][][]
List three types of information shown on a floor plan.
- Appliances, Fixtures and Equipment
- Layout of rooms[][][][][][][][][][][][][][][][][][]
- Types of materials used[][][][][][][][][][][]
State what is shown by an elevation drawing.
Finished exterior view of one side of a building.
State what is shown by a sectional-view drawing.
Cross section of part of a building.
(Detailed construction information,including materials to be used)
Large-scale drawings of an object not shown in complete detail on regular plans or elevations is the definition of?
Detail.
List the items shown on a structural drawing.
- Openings for chimneys, doorwells, stairs and windows.
- Supporting members[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
- Wall and partition construction[][][][][][][][][][][][][][][][][][][][][][]
List two types of information shown on an electrical plan.
- Dotted lines show that a switch and fixture are connected.
- Symbols show location of controls, fixtures and outlets[][][]
List three types of information shown on a climate control plan.
- Location of ducts or heating pipes.
- Location of equipment[][][][][][][][][][][]
- Location of register or radiators[][]]
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.
The strongest of the ropes listed below is:
A. Polypropylene.
B. Sisal[][][][][][][][][]]
C. Polyester[][][][][]]
D. Nylon[][][][][][][][]]
C. Polyester.
The type of dry rope with the best electrical insulating properties is:
A. Manila.
B. Polypropylene.
C. Polyester[][][][][]
D. Nylon[][][][][][][][]
B. Polypropylene.
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.
What is a thimble used for?
To reduce the stress on the rope at connections.
Which synthetic rope will float on water?
Polypropylene.
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.
What is the purpose of whipping?
Prevents the rope strands from unravelling.
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.
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.
Sharp bends and knots can reduce the strength of a rope by up to:
A. 25%.
B. 40%.
C. 50%.
D. 85%.
C. 50%.
The portion of the rope which forms the loop is called the:
A. Middle.
B. Standing part.
C. Circle[][][][][][][]]
D. Bight[][][][][][][][]
D. Bight.
Which of the knots listed below froms a non-slip loop?
A. Square knot.
B. Bowline[][][][]]
C. Reef knot[][][]
D. Timber hitch.
B. Bowline.
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.
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.
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.
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.
What is the minimum clearence required while working around a 75,000 volt power line?
3 meters (10 feet).
What is the minimum clearence required while working around a 200,000 volt power line?
4.5 meters (15 feet).
Describe “center of gravity.”
The point at which an object balances regardless of it’s position.
Where should the slings attach to the load, in relation to the center of gravity?
Above the center of gravity.
Where will the center of gravity of a load be positioned after it is lifted off the ground?
Directly below the hook.
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.
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.
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.
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.
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.
What two purposes do choker hooks serve?
Protect the rope from sharp bends.
They can be used as choker hitches.
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.
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.
Correctly-installed cable clips will reduce the breaking strength of wire rope by:
A. 10%.
B. 20%.
C. 30%.
D. 40%.
B. 20%.
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.
What sling type should be used to lift 25 pieces of steel pipe 8 meters (25 feet) long?
Choker hitch.
Double-wrap basket.
True or False?
Pipe rollers can be used to move boilers or chillers.
True.
Tirfor jacks have capacities up to:
A. 7000 kg.
B. 1500 kg[]
C. 2200 kg.
D. 3200 kg.
D. 3200 kg.
Chain hoists have capacities up to:
A. 7000 kg.
B. 8000 kg.
C. 9000 kg.
D. 10000 kg.
C. 9000 kg.
Manual lifting devices include:
A. Chain fall.
B. Block and tackle.
C. Come-along[][][][]]
D. All of the above[]
D. All of the above.
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.
An apparatus capable of long, continuous lifts is the:
A. Chain hoist.
B. Come-along.
C. Pallet truck[]]
D. Tirfor jack[][]
D. Tirfor jack.
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.
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.
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.
How should slings and wire rope be stored?
In a dry location off the ground.
What should be done with a wire rope sling that has a kink in it?
Destroy and discard it.
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.
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)
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)
Is it safe to repair a slight tear in a synthetic web sling?
No.
(If damage is found, remove the sling immediately)
The sound or light signal for “LOWER” is:
A. One bell or flash.
B. Tow bells or flashes.
C. Three bells or flashes.
D. Four bells or flashes[]]
C. Three bells or flashes.
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.
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.
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.
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.
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.
If there exists a danger of stepping on protruding nails, what t ype of footwear will protect you from injurty?
A. Steel-toed boots.
B. Cowboy boots[][]]
C. Steel insoles[][][][]]
D. Non-skid rubber soles.
D. Non-skid rubber soles.
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.
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.
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.
What should be done with faulty equipment?
Examine all hardware, equipment, tackle and slings before using it and destroy defective components.
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.
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.
Padding should be applied to all loads that have:
A. Excessive weight.
B. Slippery surfaces.
C. Irregular surfaces.
D. Sharp corners[][][]
D. Sharp corners.
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.
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.
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°.
What type of rope is suitable for using as a tag line?
Polypropylene.
What type of synthetic fiber rope conducts electricity when it gets wet?
Nylon.
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))
Where should a tag line be attached to a long load?
Near one end.
(Trusses should use two tag lines, one at each end)
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.
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”).
What is the minimum height of a guardrail?
A. 600mm (24”).
B. 750mm (30”).
C. 900mm (36”).
D. 1020mm (40”).
D. 1020mm (40”).
Above what height does a scaffold require a guardrail?
A. 1200mm (4’).
B. 2100mm (7’).
C. 2400mm (8’).
D. 3000mm (10’).
D. 3000mm (10’).
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).
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.
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”).
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.
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”).
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’).
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.
True or False?
Bolts or pins must be placed through the end frames and coupler pins when the scaffold is higher than one unit.
True.
Casters for steel scaffolds must have:
A. Rubber tires.
B. Ball bearings.
C. Levelling screws.
D. Brakes[][][][][][][][][]]
D. Brakes.
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.
Steel scaffolds fitted with casters also require:
A. Sway braces.
B. Screw jacks[]
C. Base plates[]]
D. Mud sills[][][]]
A. Sway braces.
What must be used to level a scaffold on uneven terrain?
A. Panels.
B. Screw jacks.
C. Bricks[][][][][][]
D. Building blocks.
B. Screw jacks.
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.
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.
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.
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.
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.
Which of the following ladders is freestanding?
A. Extension.
B. Step[][][][][]
C. Single[][][]]
D. Fixed[][][][]
B. Step.
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’).
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”).
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”).
The correct slope for a single or extension ladder is:
A. 1 up the slop 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.
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).
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’).
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’).
The maximu 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.
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.
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.
Referring to the figure below, which number is “USE THE MAIN LINE”?
9.
Referring to the figure below, which number is “STOP”? (Two signals)
2.
17.
Referring to the figure below, which number is “RETRACT BOOM”?
6.
Referring to the figure below, which number is “LOWER THE LOAD”?
3.
Referring to the figure below, which number is “HOIST SLOWLY”?
10.
Referring to the figure below, which number is “LOWER THE BOOM AND RAISE THE LOAD”? (Two signals)
14.
15.
Referring to the figure below, which number is “EXTEND THE BOOM”?
5.
Referring to the figure below, which number is “USE WHIP LINE”? (Two signals)
1.
12.
Referring to the figure below, which number is “SWING THE BOOM”?
4.
Referring to the figure below, which number is “RAISE THE BOOM AND LOWER THE LOAD”? (Two signals)
7.
11.
Referring to the figure below, which number is “HOIST”?
8.
Referring to the figure below, which number is “LOWER THE BOOM”?
13.
Referring to the figure below, which number is “DOG EVERYTHING”?
18.
The combination square contains a spirit level in it’s:
A. Square head.
B. Bevel head[][]
C. Protractor head.
D. Fixed head[][][][]]
A. Square head.
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.
The smallest graduation on a metric pocket tape are:
A. Half millimeters.
B. Millimeters[][][][]]
C. Centimeters[][][]]
D. Decimeters[][][]]
B. Millimeters.
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.
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.
A center punch has a tip that is ground to an included angle of:
A. 30°.
B. 45°.
C. 60°.
D. 90°.
D. 90°.
True or False?
The imperial system uses meters and millimeters for measurement.
False.
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.
A meter contains:
A. 10 millimeters.
B. 100 millimeters.
C. 1000 millimeters.
D. 10 000 millimeters.
C. 1000 millimeters.
True or False?
The hook end of a pocket tape is fixed and cannot move.
False.
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
True or False?
A chalk line case uses powdered chalk to mark a line.
True.
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.
True or False?
A try square has a sliding head that can be used to lay out 90° and 45° angles.
False.
True or False?
When using the hand level over a long distance, the level should not be reversed end to end.
False.
True or False?
A torpedo level is used in the piping trades.
True.
True or False?
A plumb bob can touch the floor when it is suspended.
False.
True or False?
Soapstones are used in pipe fabrication.
True.
Name three piping materials that can be joined using a threaded joint.
Brass.
Copper.
Plastic[]
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.
What does ASPT stand for?
American Standard Pipe Thread.
What does NPS stand for?
Nominal Pipe Size.
What does APS stand for?
Actual Pipe Size.
What does OD stand for?
Outside Diameter.
What does ID stand for?
Inside Diameter.
The exterior thread on a pipe or fitting is called a?
Male thread.
The internal thread on a fitting or valve is called a?
Female thread.
The number of threads per inch is referred to as the?
Thread pitch.
The thread angle on an American Standard Pip Thread is?
60°.
A long thread that dos not have any taper is called a?
Running thread.
A left and right nipple and coupling may be used in place of a?
Union coupling.
The amount of pipe thread necessary to make a tight connection between pipe and fitting is the definition of?
Thread engagement.
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.
The number of threads per inch for nominal pipe diameters over 2 1/2 inch is?
8.
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.
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.
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.
All hand tools should be:
A. Kept clean.
B. Varnished occasionally.
C. Greased regularly[][][][][]]
D. Soaked in solvent after each use.
A. Kept clean.
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.
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.
True or False?
The wrench that should be used on fittings is the open-end wrench or the adjustable wrench.
False.
True or False?
The socket square drive is measured in inches on both metric and imperial sockets.
True.
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.
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.
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.
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.
What kind of back does a skewback saw have?
A. Straight.
B. Crooked.
C. Heavily curved.
D. Sligthly curved.
D. Sligthly curved.
True or False?
The number stamped or printed on a saw indicates the number of teeth per 25 mm or inch.
False.
True or False?
The teeth of a crosscut saw act as tiny chisels when they cut into wood.
False.
True or False?
There is no difference between the number of points and the number of teeth per 25 mm.
False.
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.
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.
True or False?
Al hand-operated hacksaws use flexible blades.
False.
(Blades can be all hard or flexible types)
When storing a hacksaw in a toolbox, you should protect the:
A. Blade.
B. Handle.
C. Other tools.
D. Adjusting screw.
A. Blade.
True or False?
Always file on the forward stroke and raise the file on the backstroke to prevent damage.
True.
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.
A smoother cut can be obtained from a file that is:
A. Single cut.
B. Doulbe cut.
C. Round[][][][]]
D. Thre square.
A. Single cut.
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.
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.
Screwdrivers should be used to:
A. Open cans.
B. Pry[][][][][][][]]
C. Scrape[][][][]
D. Turn screws.
D. Turn screws.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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)
The framing hammer usually weighs:
A. Under 370 grams.
B. 570 to 680 grams.
C. Over 900 grams[]]
B. 570 to 680 grams.
Which type of hammer should you use to pull nails?
A. Straight claw.
B. Curved claw[]
B. Curved claw.
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.
True or False?
A sledge hammer should not be used to drive stakes or drift pins.
False.
True or False?
The ball-peen hammer is used to round over bolt threads or rivets.
True.
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.
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.
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.
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.
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.
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.
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.
True or False?
A low velocity tool must be used unless no low-velocity tool is capable of doing the fastening task.
True.
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.
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.
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.
True or False?
A powder-actuated tool must not be used in an explosive or flammable atmosphere.
True.
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.
True or False?
A powder-actuated tool must not be pointed at any person.
True.
At what speed does the fastener move in a low-velocity, powder actuated tool?
Less than 100m (330ft).
At what speed does the pin move when a high-velocity tool is used?
460m (1500ft)
What device does a low-velocity tool have that is not found in a high-velocity tool?
Captive piston.
Which type of powder-actuated tool is most commonly used in the piping industry?
Hilti low-velocity tool.
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.
What cartridge colour produces the second strongest impact?
Red.
Cartridges are available in two shapes. What are they?
Crimped.
Wadded.
Some cartridges for powder-actuated tools are center fired. How are other cartridges fired?
Rim fired.
Name the colour of Hilti cartridges from strongest to weakest.
- Purple (Strongest)
- Red[][][][][][][][][][][][]
- Yellow[][][][][][][][][][]
- Green[][][][][][][][][][]
- Brown[][][][][][][][][][]
- Grey (Weakest)[][]
When selecting a cartridge for a fastening job, what cartridge do you start with?
Start with the cartridge that has the weakest powder load.
True or False?
For fastening into concrete, the tip of the pin must be knurled.
False.
True or False?
The washer of a fastener must fit snugly into the tool’s chamber.
True.
True or False?
Any Hilti tool will accept any kind of fastener.
False.
(The tool uses only fasteners that are designed for it)
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.
About how much penetration is requred for fastening into concrete?
About 25mm (1”)
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)
What is the minimum thickness of steel a fastener may be used on?
5mm (3/16”)
.What penetration should the tool operator look for when setting a fastener into steel?
12mm (1/2”)
What is the minimum distance you may set a fastener from a torch cut or weld?
50mm (2”)
What type of concrete products should not accept a powder-actuated fastener?
Precast concrete containing prestressed cables.
What is the rule about spalled areas?
Never use a powder-actuated tool on a spalled surface.
List five materials that cannot be fastened onto concrete or steel?
Asbestos.
Brick[][][][]]
Ceramic Tile.
Glass[][][][][][][]
Vitrified Tile.
Name a principal advantage of the bench-mounted or portable chain vise?
Both vises distribute gripping pressure evenly around the pipe wall.
What is the maximum pipe capacity of the portable tri-stand chain vise?
5”.
What vise would you select if you wanted to clamp a vise to a 100 mm (4”) plank?
Portable Kit Yoke Vise.
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.
What kind of vise comes with two pairs of legs and uses a connecting pipe?
Top Screw Stand Chain Vise.
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.
Name the vice that holds and aligns pipe for tacking and is used on mains and risers.
Straight Pipe Welding Vice.
What are pipe taps used for?
To cut or restore internal pipe threads.
What are dies used for?
To cut external threads on pipe (or rods).
What is ment by a receding die?
The width of the die is less than the length of the thread to be cut.
What is ment by a full-width die?
The width of the die is equal to the length of the thread to be cut.
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.
Name a threader that could be used effectively with power equipment to cut an external thread on 2 1/2” pipe.
Geared Pipe Threader.
Name a threader that uses one set of dies to thread pipe between 1” to 2”.
Ratchet Threader.
(Jam-proof)[][][][][]]
Name the two major classifications of cutters.
Wheel cutter.
Combined wheel-and-roller cutter.
When selecting a cutter wheel for a cutting tool, what three important things should be checked with regard to the cutter wheel?
- Designed for the tool being used.
- Not blunted or damaged[][][][][][][]]
- Suited for the material to be cut[]
Which type of cutter is used with a power vise?
Wide Roll Pipe Cutter.
What type of cutter uses a chain for cutting cast iron pipe?
Soil pipe cutter.
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.
What is a special advantage offered by a 4-wheel pipe cutter?
Useful for cutting pipe in tight work areas.
What is the purpose of a reamer?
To remove the burr from the inside diameter (surface) of a pipe.
At what stage of a threading operation is reaming done?
After cutting or drilling and before threading.
What type of reamer would be selected for use with a power vise or threading machine?
Straight Fluted Ratchet Reamer.
Up to what size pipe can you ream with a spiral reamer?
4”.
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.
Name the wrench that multiplies the turning force and is idea for loosening seized joints.
Compound Leverage Wrench.
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.
To which family of wrenches does the spud wrench belong?
Flat-Jawed Wrenches.
Name the standard wrench with an angled opening.
End Pipe Wrench.
Name the standard wrench that has a jaw opening parallel to the handle and a narrow hook jaw head.
Heavy-Duty Offset Pipe Wrench.
Name the wrench specially designed for polished pipe.
Strap Wrench.
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°.
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.
Name two variations of equipment used to dispense thread cutting oil.
Hand pump.
Oiling unit[]]
True or False?
Thread cutting oil can be used as lubrication for threading and servicing hand tools.
False.
True or False?
Thread cutting oil is used only during the thread-forming process.
True.
Referring to the figure below, which dimension correctly indicates thread pitch?
A. A.
B. B.
C. C.
D. D.
A. A.
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.
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.
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.
Referring to the figure below, which illustrations of slot driver tips and screws depict a correct fit?
C.
D.
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[][][][][][]
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[][][][][]]
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[][][][][][]
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[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
What meaning would the initials PRV have other than “pressure-reducing valve”?
Pressure-relief valve.
How does a pressure reducing valve work?
Opens or closes to admit more or less water as demanded by a fixture.
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.
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.
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.
Explain “No-flow pressure”
The pressure maintained in the system by a reducing valve when no water is flowing.
Explain “Reduced pressure fall-off”
The change in the reduced flow pressure below the no-fow pressure which is needed to open the valve.
Explain “Reduced flow pressure”
The pressure maintained by the valve when water is flowing.
Explain “Series” - Relative to PRV installations.
Two or more valves are installed in a line.
(A.k.a two-stage or multi-stage reduction)
Explain “Parallel” - Relative to PRV installations.
Two or more valves are installed to serve the needs of one large supply main.
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.
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.
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.
Explain what is ment by the term “domestic” hot water.
Intended to serve domestic needs such as cooking, dishwashing, laundry.
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)
State the working and test pressures for a domestic hot water tank.
Working Pressure: 127.5 PSI
Test Pressure[][][][]: 300 PSI[]
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.
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.
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.
Explain the term “sacrificial anode.”
A magnesium rod used to help reduce corrosion of the tank by gradually corroding itself (instead of the tank).
Name three materials that can be applied to the inside of the tank wall as a protective coating against corrosion.
Galvanizing.
Glass[][][][][][]
Stone[][][][][]]
The two types of electric heaters are?
Immersion type.
Strap on[][][][][][][]
Explain why a temperature and pressure-relief valve is installed on a hot water tank.
To provide protection against uncontrolled temperature and/or pressure.
The two main tank types are designed to heat up by ___ or ________.
Gas.
Electricity.
State two advantages of an electrically-heated tank.
Noisless heating.
No heat lost in transfer to the water.
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.
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.
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[][][][][][][][][][][][][][][][][][][][][][][][][][][][][]]
Name seven essential operating parts of the temperature and pressure-relief valve.
Extension Thermostat.
Pop Action Construction.
Spring[][][][][][][][][][][][][][][][][]
Temperature Sensing Zone.
Test Lever[][][][][][][][][][][][][][][][]
Thermostat[][][][][][][][][][][][][][][]
Explain the function of the temperature-sensing element.
Activates the relief mechanism and permits the extremely hot water to escape.
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.
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.
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.
State the standard temperature and pressure settings of a temperature-and-pressure-relief valve.
Pressure = 150 PSIG.
Temperature = 210°F.
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.
State the boiling points of water when subjected to the following pressures:
50 PSIG.
100 PSIG.
50 PSIG = 297°F.
100 PSIG = 337°.
State the location of the PRU sensing element within a hot water tank.
Immersed in the upper 150 mm of water in the tank.
State the distance from the floor for the termination of a T & P valve discharge pipe.
Minimum = 6”.
Maxium = Specified by regulation.
State the diameter of the relief valve discharge pipe.
3/4”.
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.
The term used when a soldered joint lets go under stress is defined as?
Creep.
The term used to describe solder being drawn into a solder joint is ______ action.
Capillary.
Capillary action depends on the joint having a fairly ____ fit.
Close.
Two groups of solder are?
Soft solder.
Hard solder.
Solder having alloys that melt below 840°F (449°C) are known as ___ solders.
Soft.
When specifying a soft solder, the ___ content is always mentioned FIRST.
Tin.
50-50 solder starts to melt at ___ °F and flows freely at ___ °F.
360.
415[]
For service temperatures up to 250°F (121°C) where high strength is required, a ___ solder should be used.
95-5.
95-5 solder melts at ___ °F and flows freely at ___ °F.
450.
465.
Another term for hard soldering is ___________________.
Brazing.
(Silver Brazing)
Sil-Fos solder melts from ____ °F to ____ °F.
1185.
1300.
Can Easy-Flo 45 solder be used to join together copper and steel?
Yes.
Can Sil-Fos be used on iron or steel? If not, explain why.
No.
(The phosphorus will make the joint brittle)
To what group of solder does Easy-Flo 45 belong?
Silver solder.
List six steps in the preparation of a soft solder joint.
- Accurate measurements.
- Cutting[][][][][][][][][][][][][][][][]
- Removing burrs[][][][][][][][]
- Cleaning[][][][][][][][][][][][][][]
- Fluxing[][][][][][][][][][][][][][][]
- Assembling[][][][][][][][][][][]
At the _____ temperature, the brazing filler rod is completely melted.
Liquidus.
The stregth of a brazed joint depends to a large extent on the ________ between the pipe and the copper fitting.
Clearence.
If the brazing alloy fails to flow or has a tendency to ball up, it indicates _______ on the metal surfaces.
Oxidation.
95-5 solder contains 95% tin and 5% _______.
Antimony.
What soft solder would be acceptable for service in contact with potable water?
Non-lead.
A _______ oxyacetylene flame is best suited for silver brazing.
Reducing.
Any substance or mixture used to promote fusion is the definition of?
Flux.
The flux should be ____ at the temperature of molten solder.
Fluid.
The selection of flux is dependent on three things.
- Method of soldering.
- The condition of the surface.
- Type of metal to be soldered.
Two main types of fluxes are:
- Corrosive.
- Non-corrosive.
Non-corrosive fluxes mainly have a ______ action, protecting the metal from oxidation.
Covering.
Corrosive fluxes are capable of ________ the oxide from the metal.
Removing.
Corrosive fluxes should be _________ after the joint has cooled.
Washed off.
The flux most frequently used to solder copper tubing is?
Solder paste.
One of the fluxes used in silver brazing is?
Borax.
Does Sil-Fos require a flux when joining:
- Copper to copper?
- Copper to brass[]?
- No.
- Yes.
