1st Year Work Place Skills Flashcards by Bruce DeJong

BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define heat.

Heat is a form of energy (the ability to do work); the random vibration of molecules of the body. Adding heat to a substance increases its molecular and potential energy and may cause it to under go a change of state is to melt or vaporize.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Describe the effect that heat has on air volume.

Volume of air increases as air gets warmer.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Describe the effect that heat has on air density.

Density of air decreases as air gets warmer.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Describe what happens to a substances molecular structure when heat is added.

Adding heat to a substance increases its molecular motion and potential energy and may cause it to under go a change of state that is to melt or vaporize.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define the conduction. Heat transfer

The transfer of heat through a substance. The heat flows from particle of the substance without movement of particles themselves. Actual physical contact is for heat transfer to occur between two bodies by this means.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define the convection. Heat transfer

The transfer of heat by natural motion of a fluid medium, either liquid or gas. The liquid or gas is first heated and this causes it to expand and become less dense give it more volume.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define the radiation. Heat transfer

The transfer of heat by energy waves, similar to light waves travel in straight lines and are able to pass through a vacuum; they require no medium on which to travel.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define BTU’s in relationship to water.

It is the amount of heat required to raise the temperature of 1 pound of water 1* Fahrenheit.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define BTU’s in relationship to air.

It is the amount of heat required to raise the temperature of 55 cubic feet of air 1* Fahrenheit.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

What direction does heat travel?

Heat always travels from a warm object to a colder object. The rate of heat travel is directly proportional to the temperature difference between the two bodies.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define sensible heat.

Is the heat required to produce a change of temperature in a substance, but not a change of state.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define latent heat

Is the amount of heat required to change the state of a substance without changing its temperature.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define specific heat.

Is the number of Btu required to raise the temperature of 1 pound of a substance by 1*F.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

How is sensible heat measured?

By a thermometer or by the sense of touch.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

How is latent heat measured?

Latent heat is measured in Btu’s.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define humidity.

The quantity of water in a particular volume of air.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define relative humidity.

A measure of the amount of water air holds at a certain temperature. It is relative compared to the amount of water that air that same temperature can hold at 100 percent humidity or saturation.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define saturated air.

When the air contains the maximum amount of vapour possible for a particular temperature, the air is said to be saturated.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

Define dew point temperature.

The temperature that moisture will start to condense from the air.

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BASIC 1ST YEAR THEORY
TEMP, HUMIDITY and VENTILATION

True or False : Hot air is denser (heavier) than cold air.

False.

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1st YEAR RES. HVAC INSTALLATION
Heating Systems and Equipment

A furnace is a piece of equipment that will turn _____ into heat energy.

Fuel.

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1st YEAR RES. HVAC INSTALLATION
Heating Systems and Equipment

Which of the following things is not required in a solid fuelled furnace?
A. Blower fan
B. Heat exchanger
C. Fan control
D. Gas valve

Gas valve

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1st YEAR RES. HVAC INSTALLATION
Heating Systems and Equipment

Which of the following is not a type of furnace.
A. High boy
B. Low boy
C. Side boy
D. Counter flow

Side boy

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1st YEAR RES. HVAC INSTALLATION
Heating Systems and Equipment

Which of the following is an advantage of the radial system?
A. It has automatic balancing of heat runs
B. Less material is used
C. It is simple to install
D. Long runs receive maximum pressure from the plenum

C. They are simple to install.

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1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment Perimeter loop systems are found mostly in _______ heating situations.

Underslab.

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment ``` What is the most common distribution system used today? A. Radial B. Perimeter radial C. Perimeter loop D. Extended plenum ```

D. Extended plenum.

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment ``` What is the heating value of natural gas? A. 500 Btu/fat3 B. 1000 Btu/ft3 C. 1500 Btu/ft3 D. 2000 Btu/ft3 E. 2500 Btu/ft3 ```

B. 1000 Btu/ft3

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment ``` What is the heating value of propane? A. 500 Btu/ft3 B. 1000 Btu/ft3 C. 1500 Btu/ft3 D. 2000 Btu/ft3 E. 2500 Btu/ft3 ```

E. 2500 Btu/ft3

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment ``` What is the burner of choice for high rates of combustion in an oil furnace? A. Pan burner B. Injection burner C. Vaporizing burner D. Atomizing E. Nozzle burner ```

D. Atomizing burner

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment ``` What is the minimum efficiency of a gas furnace allowed to be manufactured and sold in Canada? A. 68% B. 78% C. 80% D. 88% E. 92% ```

B. 78%

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment The inducer fan on a mixed foci end furnace is a power vent that allows you to vent out the sidewall. True or False

False

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment ``` What are high efficiency gas furnaces also known as? A. Super furnace B. Condensing furnace C. Plastic vent furnace D. Cool heat furnaces ```

B. Condensing furnaces

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment What are the 3 types of gas fireplaces?

1. Free standing 2. Zero clearance 3. Insert

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment In addition to wall mounted thermostats and switches, fireplaces can be controlled by a _____.

Wireless remote

1st YEAR RES. HVAC INSTALLATION Heating Systems and Equipment Gas logs make the fireplace look more like a wood fire. The logs can be made of. ____ and ______

Concrete. or ceramic fibre

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM What are the first 2 steps in becoming an apprentice?

1. Find a employment and possibly serve a probation period. 2. Contact the nearest office of Alberta Apprenticeship and Industry Training by mail or phone to request the contact documents.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM What is the minimum educational requirement for entrance into a sheet metal worker apprenticeship?

The minimum requirement is Math 20 or 23, Pure Math 20 or Applied Math 20.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM Name the 3 participants in the Contract of Apprenticeship.

1. The apprentice 2. The employer 3. Alberta Apprenticeship and Industry Training.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM Apprenticeship is a combination of 4 terms of on the job and technical training. How many hours of on the job training is an apprentice sheet metal worker expected to complete in order to qualify for the next period of apprenticeship?

1725hrs

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM When should the employer, journeyman and apprentice fill out the Verification of On the Job Training and Work Experience in the Blue Book?

Upon the completion of each period of training or when there is a change of employer.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM When should the journeyman sign off on a task from the On the Job Tasks Checklist in the Blue Book?

When the apprentice has reached an acceptable level of competence in performing the task without supervision.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM On what is the rate of pay for an apprentice based?

In the sheet metal worker trade, regulation rates of pay are stipulated as a % of the journeyman's wages. These wages can vary from employer to employer, but are based on wages negotiated by the Sheet Metal Worker International Association.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM Attending technical school without returning to work depends on which 2 factors?

1. The availability of a suitable training space. | 2. Whether or not you have passed the current training period's exams.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM Who is responsible for marking the fourth period sheet metal worker practical exams?

Representatives from industry.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM What is the primary purpose of the Red Seal Program?

To allow trades people to work in other provinces without having to be re-certify.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM From what group are members of the LAC and PAC chosen?

Representatives from industry are appointed by the Apprenticeship and Industry Training Board to sit on Local Apprenticeship Committees and a Provincial apprenticeship Committee.

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM Who is responsible for monitoring the apprenticeship system and the progress of apprentices in their trade at the local level?

The Local Apprenticeship Committee (LAC)

BASIC 1st YEAR THEORY APPRENTICESHIP PROGRAM Who is responsible for identifying the training needs and course content of a particular trade?

The Provincial Apprenticeship Committee (PAC)

BASIC 1st YEAR THEORY Work Place Safety A tired employee is just as hazardous as an employee under the influence of a impairing substance. True or false.

True

BASIC 1st YEAR THEORY Work Place Safety What are the 3 primary groups responsible for the safety in the work place?

1. The employee 2. The employer 3. Equipment or material suppliers.

BASIC 1st YEAR THEORY Work Place Safety The law requires most workplaces to have regular safety meetings. True or false.

True

BASIC 1st YEAR THEORY Work Place Safety The maximum penalty for a 1st offence under the OH&S Act is.

$500,000 and or 3 months in prison.

BASIC 1st YEAR THEORY Work Place Safety Industrial protective headwear must comply with who's standards

Canadian Safety Standards (CSA)

BASIC 1st YEAR THEORY Work Place Safety When using a full-face visor, safety glasses are not required.

YES safety glasses are required.

BASIC 1st YEAR THEORY Work Place Safety What is the maximum amount of time you can be exposed to 88dBA of sound without hearing protection before hearing damage may occur? 1. 15 minutes 2. 2 hours 3. 4 hours 4. 8 hours

4 Hours.

BASIC 1st YEAR THEORY Work Place Safety Identify the 3 elements necessary for combustion to occur.

1. Fuel 2. Air 3. Heat (ignition)

BASIC 1st YEAR THEORY Work Place Safety List the 4 classifications of fires.

1. Class A - Ordinary combustibles 2. Class B - Flammable liquids 3. Class C - Electrical 4. Class D - Combustible metals

BASIC 1st YEAR THEORY Work Place Safety What is the purpose of Part II of the OH&S Act, Regulation and Code?

It's purpose is to ensure that every work site has then equipment, supplies and trained staff necessary to provide 1st aid care in the event of a workplace illness or injury.

BASIC 1st YEAR THEORY Work Place Safety What are the 4 main categories of workplace hazards?

1. Biological 2. Chemical 3. Physical 4. ergonomic.

BASIC 1st YEAR THEORY Work Place Safety What is the hazard your exposed to when you find a dead animal in a unit or duct?

Biological

BASIC 1st YEAR THEORY Work Place Safety What is the hazard that describes a back injuries due to a poor fit between you and your work environment?

Ergonomic

BASIC 1st YEAR THEORY Work Place Safety A tool is not working properly and is not taken out of service would be classified as a __________ type of hazard.

Physical

BASIC 1st YEAR THEORY Work Place Safety Asbestos only is a hazard when its disturbed. True or false.

True.

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is a cylinder?

Class A Compressed Gas

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is a fire with a small fire inside?

Class B Flammable & Combustible Material

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is a circle with a fire on it?

Class C Oxidizing Material

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is a skull and cross bones?

Class D Division 1 - Poisonous and Infectious Material; Immediate and serious toxic effects

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is Tee on a small circle?

Class D Division 2 - Poisonous and Infectious Material; Other toxic effects.

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is a circle with 6 curved horns coming out of it?

Class D Division 3 - Poisonous and Infectious Material; Biohazardous infectious material.

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is 2 test tubes pouring liquid onto a hand and bar?

Class E Corrosive Material.

BASIC 1st YEAR THEORY WHMIS What is the WHMIS label that is an R with a test tube inside of it?

Class F Dangerous Reactive Material.

BASIC 1st YEAR THEORY WHMIS Which statement is true. The MSDS must be: 1. Printed in a different colour from the container to which it is attached. 2. Provided or prepare by the employer 3. Made of plastic or some other durable material. 4.Prepared by the employee who is actually using the product.

2. Provided or prepare by the employer

BASIC 1st YEAR THEORY WHMIS Which statement is true. The supplier label is: 1. Attached to the container in which the product is shipped. 2. Attached to the container in which the product is stored. 3. Mounted on the wall of the shop near where the product is used. 4. Made available to all employees using product.

1. Attached to the container in which the product is shipped.

BASIC 1st YEAR THEORY WHMIS Worker education is the responsibility of the: 1. Employer 2. Employee 3. Training institute 4. Supplier of the product.

1. Employer

BASIC 1st YEAR THEORY WHMIS A MSDS must be updated; 1. once a year 2. When it becomes too dirty or worn out to read. 3. At a discretion of the plant safety officer. 4. Once every 3 years or sooner if new information becomes available.

4. Once every 3 years or sooner if new information becomes available.

BASIC 1st YEAR THEORY WHMIS Name the 9 pieces of information that must be included on an MSDS.

1. Product information 2. Hazardous ingredients 3. Physical data 4. Fire or explosion hazards 5. Reactivity data 6. Toxicology properties 7. Preventive measures 8. 1st aid measures 9. Preparation Information.

BASIC 1st YEAR THEORY WHMIS What section of the MSDS would contain information on PPE?

The section on Preventive Measures.

BASIC 1st YEAR THEORY WHMIS Are all the ingredients of the controlled product listed in the MSDS?

NO. Only the ingredients considered to be a hazardous and their specific concentrations in that controlled product.

BASIC 1st YEAR THEORY WHMIS What information would you expect to find in the 1st aid section of an MSDS?

Specific measures to be taken for eye or skin contact or overexposure due to inhalation or ingestion.

BASIC 1st YEAR THEORY Electrical Safety Why is it so important to work safely with or near electricity?

The voltage of the electricity and the available electrical current in regular businesses and homes has enough power to cause death by electrocution.

BASIC 1st YEAR THEORY Electrical Safety Define dynamic electricity?

Is the uniform motion of electrons through a conductor (this is known as electric current).

BASIC 1st YEAR THEORY Electrical Safety What kinds of injuries result from electrical currents?

1. When electricity arcs from an exposed energized conductor. It will travel through gas to person who is grounded. 2. Thermal burns from the heat generated by electric arc. 3. Thermal burns from heat radiated from the an electric arc flash. 4. An arc blast can include a potential pressure wave. 5. Muscle contractions or a startle reaction can cause worker to fall from heights.

BASIC 1st YEAR THEORY Electrical Safety What should you do if your vehicle comes in contact with a power line?

1. DON'T get out of vehicle. 2. Call 911 and the utility service. 3. Wait till the electrical service company comes and tells you it is safe. 4. Never try to rescue another person. 5. If you have to jump more than 1.5-2feet away from vehicle with arm and legs together. 6. After jump shuffle for 10 more feet.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is accountable for 25% of loss time workplace claims?

Falling.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What factors determine the ladders you choose for a job?

Type of project, the height you will be working at, specific to task.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Which step ladder may be used by 2 workers at the same time?

The double or twin step ladder.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the maximum capacity of an extra heavy-duty industrial type ladder? 1. 300lbs 2. 225lbs 3. 250lbs 4. 375lbs

1. 300lbs

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Which type of material is bested suited for working near electricity or over head power lines?

Fibreglass

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts The side rails of a portable extension ladder should extend at least _____above a platform, landing or parapet.

They should extend at least 1 meter.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What colour should a wood ladder be painted?

Never paint a ladder other than by being preserved with a transparent protective coating.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts List the 5 factors to consider when choosing the correct scaffold for a job?

1. Availability 2. Cost 3. Workforce expertise 4. Site parameters 5. Expected loads and terrain.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the widely used scaffold system?

Frame scaffolds.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Which part of the scaffold system must be matched to site conditions?

The base.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Name 2 types of suspended scaffolds.

1. Work cage or Boson chair. | 2. Swing stage.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Most construction sites do not require licensed people to operate lifts. True or False.

False

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts An employer shall ensure that the height of a rolling scaffold is no more than _____ times the dimension of its smallest base.

Is no more than 3 times its smallest base

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Name the 3 ways material lifts can be powered.

1. Manually 2. CO2 bottle 3. Compressed air

BASIC 1st YEAR THEORY Rigging A right lay rope has: 1. Strands twisted to the left, yarns twisted to the right. 2. Strands twisted to the right, yarns twisted to the right. 3. Strands twisted to the left, yarns twisted to the left. 4. Strands twisted to the right, yarns twisted to the left.

4. Strands twisted to the right, yarns twisted to the left.

BASIC 1st YEAR THEORY Rigging The strongest synthetic fibre rope is; 1. manila 2. hemp 3. polypropylene 4. nylon

4. nylon

BASIC 1st YEAR THEORY Rigging Safe working load is the ; 1. Safety factor divided by the breaking strength 2. Breaking strength divided by the safety factor 3. Safe way to lower a load 4. The ultimate tensile strength

2. Breaking strength divided by the safety factor

BASIC 1st YEAR THEORY Rigging The type of knot or bend used for tying 2 ropes together of different diameters together is the; 1. Bowline knot 2. Sheet bend 3. Carrick bend 4. Sheepshank knot

2. Sheet bend

BASIC 1st YEAR THEORY Rigging A knot in a rope; 1. Increases the rope strength by 50% 2. Increases the rope strength by 25% 3. Decreases the rope strength by 50% 4. Decreases the rope strength by 25%

3. Decreases the rope strength by 50%

BASIC 1st YEAR THEORY Rigging How is a fist grip clip different than a wire rope clip?

The fist grip has 2 identical components.

BASIC 1st YEAR THEORY Rigging Why is a thimble used in a eye on a wire rope sling?

The thimble helps prevent premature wear of the slings eye.

BASIC 1st YEAR THEORY Rigging How many wire rope clips are recommended to be applied to a 1" diameter wire rope to make an eye in the rope.

4 wire rope clips are required.

BASIC 1st YEAR THEORY Rigging How is the lifting capacity of a synthetic fibre rope sling identified?

By a colour-coded non-loadbearing cover placed over the sling.

BASIC 1st YEAR THEORY Rigging When are shoulderless eyebolts used?

For vertical hoists only.

BASIC 1st YEAR THEORY Rigging The type of chain hoist most suitable for a horizontal pull is what?

Come along

BASIC 1st YEAR THEORY Rigging When 2 blocks are connected together by a rope, they become a machine, commonly known as what?

Block and tackle system

BASIC 1st YEAR THEORY Rigging Why must a crane be set up as level as possible?

So the lifting capacity of the crane is not effected.

BASIC 1st YEAR THEORY Rigging What is used to increase the crane's stability?

Out riggers

BASIC 1st YEAR THEORY Rigging A crane is capable of the heaviest lifts when its boom is very near the horizontal. True or False.

False. Maximum lifting is when the boom is near vertical.

BASIC 1st YEAR THEORY Rigging What does the hand signal mean when worker is moving arms horizontally at chest level back and forth?

Emergency stop.

BASIC 1st YEAR THEORY Rigging What does the hand signal mean when worker is has arm at 90* with as a fist and thumb pointing down?

Boom down.

BASIC 1st YEAR THEORY Rigging What does the hand signal mean when worker is has arm at 90* with as a fist and thumb pointing down at him other hands open palm?

Lower boom slowly

BASIC 1st YEAR THEORY Rigging What does the hand signal mean when worker is has arm at 90* with as a fist and thumb pointing down moving fingers out and in?

Lower boom and raise the load.

BASIC 1st YEAR THEORY Rigging What does the hand signal mean when worker is has arm at 90* with other arm underneath with fingers pointing up moving bottom arm up and down.

Raise load slowly

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Special fresh air ventilation fittings must be used to connect the fresh air duct to the return trunk duct. True or False.

False.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The combustion air termination is used to do what?

Keep cold air from dropping into the furnace room.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Both factory built chimneys and vents have a system of parts that are ______ by a recognized testing agency.

Certified.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Installations requiring you to run a forced air heating under the concrete slab are known as what?

Underslab heating

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Roof jacks used on dryer vents are available without which of the following?

Bird screens

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The material used for venting of the fan to the outside must be metal duct with insulation and a vapour, such as foil back insulation. True or False

False.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Furnaces require air to fuel the fire inside of them. This is called what?

Combustion air.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The entire underslab ducting system must slope _______ the furnace.

Back to the furnace.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components When a return air branch run is finished on the bottom with a drywall ceiling. The bottom of the branch run is finished with what?

Drywall.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is the uncontrolled leakage of air from a building?

Exfiltration

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What does a type L-vent construction consist of?

An outer casing of Galvalume/airspace/inner liner of stainless steel.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The ductwork coming off the plenum for underground heating installations will be ______ for the strength and to make it easier to seal against moisture in the ground.

Round.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components 1. is 14" wide by 8" high 2. is 14" high by 8" wide 3. covers a 14" by 8" hole 4. has a free area of 14" X 8"

3. covers a 14" by 8" hole

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is the heart of the heating, ventilation and air-conditioning (HAVA) system?

The air recirculation fan.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The air is _____ from the central heating or cooling unit by the supply air system.

Distributed.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The return air part of an HVAC system consists of the parts to bring air back from the ______ to the furnace.

Occupied space.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Rectangular duct takeoffs include all of the following except; 1. Top take-offs 2. Side take-offs 3. Universal take-offs 4. Saddle take-offs

4. Saddle take-offs.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components The ratio between the width and depth of duct should never exceed what?

4(width) by 1 (depth)

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Name the 4 things that can cause dynamic loss in an airstream.

1. Material duct is constructed from (smooth or rough) 2. The shape of the duct 3. Change in direction 4. Change in cross sectional area.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is the dynamic air loss of flexible duct compared to smooth duct?

10 times more than smooth duct.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Dynamic losses occur in both rectangular and round duct. True or False

True

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components You should always install 2 elbows together (back to back). True or False

False.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment A furnace is a piece of equipment that is used to change ______ into heat energy.

Fuel

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection Having this ability will make you successful in you sheet metal career. What type of drawing must you able to read?

Orthographic drawings

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection Identify orthographic type drawings.

Drawing 2 dimensional drawings and visualizing 3 dimensional objects.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection Construction types prints are drawn in what 2 categories

1. pictorial type drawing (3 dimensional) | 2. Orthographic type drawing (2 dimensional)

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What type of line is not on a pictorial drawing?

A hidden line.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection Can you take enough measurement off a pictorial drawing to make a fitting?

No, because there are no hidden lines.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection Can you make a fitting from an orthographic drawing?

Yes, because you have a picture of each side of the object scaled next to each other in the same scale.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What are the different positions of a orthographic drawing?

1. Top 2. Front 3. Right 4. Left 5. Rear 6. Bottom

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection Is it always necessary to show all 6 sides or a orthographic object

No, unless the object is extremely complex. You only need to shown the information that represents the complete object.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What do you need to understand when looking at an orthographic drawing?

Think of the object as being as being made of a transparent material so you can see both the near and the far edges when you view one face.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What do you call one surface imaginary of an orthographic drawing?

Viewing plane

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What are object lines on a drawing?

Dark solid lines that outline at you would see an object.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What are hidden lines on a drawing?

Are broken lines used to show internal or hidden shapes in an object

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection What is the proper order to show orthographic views?

1. The edges of the object are always in line from one view to another are drawn in the same scale. 2. Top view (TV) is at the top of the drawing. 3. Front view (FV) is directly below top view. 4. Right side view (RSV) is to the right of (FV) 5. Left side view (LSW) is to the left of (FV) 6. Back view (BV) is far side of either (RSV) or (LSV) 7. Bottom view (BOTTOM) is directly below (TV)

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Orthographic Projection How do you determine what is the best view of an object to use in orthographic draws?

The side that has the most information shown and the least hidden lines which will give you the minimum number of views

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What are the 3 basic views of orthographic drawing?

1. Front view 2. Top view 3. And 1 side view

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Reading construction drawings are similar to reading and book BUT what is the one difference?

Instead of relying on words, drawings use symbols to convey the meaning.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What are the 2 categories drawings can be?

1. Pictorial | 2. Othorgraphic

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What are the most common pictorial drawing?

1. Perspective 2. oblique 3. isometric

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Perspective Drawing

A drawing that has parallel object lines connect to a vanishing point. This can be shown as front, top, and sides that connect on a vanishing point

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Oblique Drawing

A drawing that is presented with the front of the object being drawn square to the paper. Vertical lines are drawn 90* to the horizontal lines. Other object line are drawn 30* or 45* from the front view. It does NOT have to be proportional..

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Isometer Drawing

Term means equal measure. They have lines drawn at an angle of 30* from horizontal for both length and width. Vertical lines represents height.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter The 1 problem with pictorial drawing?

They don't accurately duplicate exact shapes and angles.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What type of drawing style shows the exact shape of the objects individual surfaces?

Orthographic projection. Also called third angle projection, multiple view projection and working drawing

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Orthographic Projection

2 or more views of the shapes of a 3 dimensional object. Where important information about the object is stated on 2 dimensions

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Orthographic Drawing

Drawing that shows separate views of the surfaces would be seen if you were to stand in different positions in relation to the object. Views commonly used are top, front and right side.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Sectional Drawing

Drawing that allows you to see inside of a piece of equip or internal of a construction building. It gives a understanding of its composition than hidden lines.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter With sectional drawings define cross-hatching

This is where on the drawing sections are filled with diagonal lines to represent solid material.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What is the difference between sectional drawing verse orthographic drawings?

With sectional drawings you need to image where the cut is taken and what the view of the object would be at the particular point. You have to also imagine which is cut and which is not.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What is the process to convert Isometer drawings to orthographic drawings?

1. Identify the front, top and right side view. 2. Then select the best view for isometric drawing 3. Draw front first view, then draw the two other corresponding views.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter Define Isometric Axis

A 3 dimensional drawing which the horizontal axes are drawn at 30* from true horizontal plane.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What type of drawings are used for prefabrication purposes?

Isometric

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter What type of set square do you use when drawing isometric drawings?

30*/60* set square. if no set square use isometric paper (with the lines at 33* and 90*)

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter With orthographic drawings; where is north?

North is either to the top or to the left hand side of the page.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter With isometric drawings; where is north?

North can be oriented to any 4 corner.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Single Line Drawings Gas Fitter With isometric drawings information which never changes when converted into orthographical?

Up or down axis which represent a vertical line as seen on the orthographical drawing.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is type of ladder you can stand the very top of.

Stepstool

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What makes Single stepladders the popular of styles.

1. Can be used in low or medium heights. | 2. Accessories are variable for holding tools and small parts.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What stepladder can allow 2 workers on at one time?

Double or Twin Stepladder

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is different about a platform ladder?

It has a large work area on the top that has hand rails on 3 sides

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Define what is a Single ladder.

Single section, non-extendable ladders .

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts 3 Things to conceder when choosing the right ladder for the job.

1. Your height 2. The height you want to reach 3. Style of ladder.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What can you not do on a ladder.

Stand on the top 2 rungs.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the maximum load capacity for Super Heavy Duty ladder?

170kg (375lb)

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the maximum load capacity for Extra Heavy Duty ladder?

136kg (300lb)

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the maximum load capacity for Heavy Duty ladder?

113kg (250lb)

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the maximum load capacity for Medium Duty ladder?

102kg (225lb)

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What are 3 types of material that ladders can be made of?

1. Wood - non-conductive when dry 2. Aluminium - strong, light and non-corrosive 3. Fibreglass - non-conductive and strong

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What type of ladders do you never use near electricity?

1. Aluminum 2. Waterlogged wood 3 .Dirty wood

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the proper setback rule for leaning a ladder against a wall?

4 to 1 Ratio. | The set back must be 1 meter for every 4 meters of length.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What must you always do when setting up an extension ladder?

Ensure that the locks are fully engaged that the fly is in front of the base before climbing.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What are the DO NOTS in ladder use.

1. Don't set up ladder on slipper ground. (Have non-slip devices on feet) 2. Don't climb a closed stepladder 3. Don't lean out on an ladder. Keep body center to ladder. 4. Use caution when moving material on a ladder 5. Don't seat on the top (paint shelf) of a ladder. 6. Don't over weight (load) 7. Must face the ladder when on it.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts Define scaffold

Temporary elevated work platforms and supporting structures designed to support workers, equipment and material.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What are the 5 types of scaffolding?

1. Frame scaffolds 2. Free-standing or rolling. (Bakers Scaffold) 3. Tube and coupler (tube and clamp) 4. Modular system scaffold 5. Suspended scaffold. (1 person Boson chair or 2 people swing stage.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts How is a frame scaffold constructed?

They are a welded assembly of tubular to make a "frame"

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What are the most common frame scaffold dimenions?

Width 3' (0.914m) and 5' (1.524m) | Length 5' (1.524m) and 6'6" (1.981m)

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is a crossbrace in scaffolding?

A rod that connects 2 frames and support lateral supports and rigidity.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is a BASE in scaffolding?

Are the feet that go on the frames. Examples are caster wheels, baseplates, screwjacks with baseplates and socket jacks.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is a BRACKET in scaffolding?

Is an accessory that is used to extend the work platform the side or ends of the assembly.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is a RETAINER PIN used for scaffolding?

To hold to components of the frame together and ensure that the pin itself can not come loose.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What makes tub and coupler scaffold unique?

It can be erected on un-level ground.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What are the 4 components of tube and coupler scaffold?

1. Vertical Tubes 2. Horizontal Tubes 3. Diagonal Tubes 4. Couplers

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What is the advantage that MODULAR SYSTEMS have over TUBE AND COUPLER?

Modular scaffold does not require a degree of expertise compared to tube and coupler.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH&S Act is this statement true or False? CLAUSE 334 An employer shall ensure that; The height of a free standing or rolling wheel scaffold is not more than 3 times the smallest dimension of its base?

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH&S Act is this statement true or False? CLAUSE 334 A worker shall CAN retain on a rolling scaffold while being moved only if 1. The height is not more then twice the shortest dimension of the base. 2. The surface being rolled is firm, level and free of hazards.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH&S Act is this statement True or False? CLAUSE 325 An employer must ensure that a scaffold is designed and constructed to support at lease 4 times the load that may be impose on it.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH&S Act is this statement True or False? CLAUSE 324 An employer must ensure a scaffold is; Anchored by one tie in for each 4.6 meter vertical and one tie in for each 6.4 meter horizontal interval.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What are the components of a GUARDRAIL System?

1. Guardrails (top and midrail) 2. Guardrail posts 3. Toe board.

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH and S Act is this statement True or False? CLAUSE 315 A guardrail required by this regulation must have; 1. A horizontal top member that is not less than 920mm ( 3' ) nor more than 1070mm ( 3'6" ) above the base.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH and S Act is this statement True or False? CLAUSE 329 An employer ensure that a solid sawn lumber scaffold plank is; 1. graded as scaffold grade or better 2. Sized 51mm ( 2" ) X 254mm ( 10" ) lumber

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH and S Act is this statement True or False? CLAUSE 321 An employer must ensure that; Toe boards are not taller that 140mm ( 5 1/2" ) and have the bottom of the toe guard no higher than 6mm from the working area base.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH and S Act is this statement True or False? CLAUSE 3 An employer must ensure that; Toe boards are installed when guardrails are in place or where there is a possible for material to fall more than 1.8m.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH&S Act is this statement True or False? CLAUSE 329 An employer must ensure that a scaffolding plank; Extends no loss than 150mm ( 6") and not more than 300mm (11 3/4') beyond a ledger

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH and S Act is this statement True or False? CLAUSE 329 An employer must ensure that all light duty scaffold platforms are not less than 500m ( 18 5/8") wide. Heavy duty scaffolding is not less than 1m ( 3" 3 3/8.")wide.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts What at are the 2 types of mechanical lifts?

1. Scissor lift | 2. Boom lift

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH&S Act is this statement True or False? CLAUSE 256 A worker not operate powered mobile equipment unless the worker; 1. is trained to safety operate the equipment.

True

BASIC 1st YEAR THEORY Ladders, Scaffold and Lifts According to the OH and S Act is this statement True or False? CLAUSE 256 The operator of powered mobile equipment must; ensure the passengers in the powered mobile equipment use the seat belts and other safety equipment in the powered mobile equipment

True

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment What is the heart of an HVC unit?

Air recirculation equipment

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment List the 4 components of the furnace.

1. fuel supply components 2. air supply components 3. heat exchanger 4. safety controls

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Between these 3 fuel sources which use the same the same burner components and which don't/

Natural gas and propane systems use similar burning systems. | Oil furnaces use a different control system but have some type of controls and burner.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Define gas valve.

is an on-off shut off device that regulates the flow and pressure of the fuel.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Natural gas furnaces can be easily converted into a propane furnace. True or False

True

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment What type of burners do oil furnaces us.

Atomizing type burner or oil burner gun.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment What are 2 types of solid fuel?

1. Coal | 2. Wood

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Define Draft Hood

A component only found on old low efficiency furnace that cools the products of combustion as they exit the flue. This done by introducing dilution air.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment What is a major safety concern with draft hoods?

If exaust air is blocked, then CO2 ill back flow into the furnace. The CO2 is then reburnt which makes C0 (carbon monoxide). CO2 is deadly.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Define Heat Exchanger

The component of the furnace that separated the circulating air from the products of combustion.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment What are 2 types of safety controls.

1. One tyoe monitors the flame and shuts off the fuel if flame failure 2. Other type monitors the temperature and shuts off the fuel if heat rises too high

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Define Thermocouple

Ode furnaces use a pilot light sensor to control the gas vale and stop fuel in cause of fuel if the heat rises too high.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. Heating and Equipment Are the flame sensors and temperature controls very similar between natural gas and propane furnaces.

Yes

1st YEAR SIMPLE LAYOUT DEVELOPMENT Introduction to Drafting There are generally two _______ for each rectangular fittings. 1. arcs 2. gores 3. cheeks 4. mitre lines

3. cheeks

1st YEAR SIMPLE LAYOUT DEVELOPMENT Introduction to Drafting A section of a round elbow, which is basically a straight section cut at an angle at one or both ends, is known as a/an: 1. apex 2. pattern 3. gore 4. triangle

3. gore

1st YEAR SIMPLE LAYOUT DEVELOPMENT Introduction to Drafting The _____ is the term usually given to the outside of the elbow. 1. throat 2. net pattern 3. heel 4. curved line

3. heel

1st YEAR SIMPLE LAYOUT DEVELOPMENT Introduction to Drafting A _____ is used to draw horizontal lines and as a base for using other drafting tools. 1. set square 2. T-square 3. protractor 4. French curves

2. T-square

1st YEAR SIMPLE LAYOUT DEVELOPMENT Introduction to Drafting A _____ may be used to draw angles that cannot be drawn with set squares. 1. protractor 2. templates 3. dividers 4. flexible curves

1. protractor

1st YEAR SIMPLE LAYOUT DEVELOPMENT Introduction to Drafting A _____ is used to draw arcs and circles. 1. French curves 2. T-square 3. Compass 4. Dividers

3. Compass

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout Patterns that are drawn directly onto the metal without using any orthographic views or formal development methods are referred to as?

Simple layout

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout Many objects that have one pair of parallel sides can be developed using what method?

Parallel line development

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout Objects whose sides meet at an apex, or common centre point, may be developed using what method?

Radial line development

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout _______ is a method of pattern development used to develop patterns for irregular shaped objects.

Triangulation

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout _______ is a short cut method of layout.

Rollation development

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The _______ of a pattern is the distance around the duct.

stretchout

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The vertical lines that become the corners of the duct after it is folded in a hand brake are called what?

brake lines

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout _____ _____ are used to join individual pieces of duct or fittings together.

Duct connections.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The ____ _____ requires no allowances to be added to the completed pattern.

raw edge.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The s-cleat and drive cleat connection, also called the slip and drive (S and D connection) is a common connection used for connecting ________________.

residential and small commercial ducts.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The slip cleat, sometimes called the s-cleat is approximately what width?

1 inch

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The drive cleat is approximately what with?

1 1/8"

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The slip and drive connection requires a ______ allowance to be added to the duct connection.

1/2"

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The standing drive connection is also called the _____ connection.

CP connection.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout What is a another term for a hammer lock?

Tap-in

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout What do you call a hook seam with a single offset?

groove seam

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout What is the most common used machine formed lock in the sheet metal trade.

Pittsburgh Lock

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout _____ _____ is required to remove excess material not required in either the duct fabrication allowance or the duct connection allowances.

Proper Notching

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout What do you call the list of pieces of metal that will be cut at the shear.

Cutting list

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout What is the allowance required at the edge out the duct or fitting?

1/2"

1st YEAR SIMPLE LAYOUT DEVELOPMENT Simple Layout The duct notch, radius fitting notch and the transitional fitting notch are all notches used when notching for what on a duct connection?

Slip and Drive connection.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows Rectangular elbows are fittings used to create corners or change direction of a duct line. TRUE or FALSE

True

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows The reasons the cheeks of a rectangular elbow may have to be fabricated in sections or pieces ?

1. Material utilization 2. added strength 3. limited sheet sizes

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows Elbows with a radius heel and radius throat are more efficient than those with a square heel and throat. TRUE or FALSE

True

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows A residential application throat radius should be what compared to the cheek opening?

Minimum of one half

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows A net pattern is a pattern with what?

No allowances added

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows All lines used in the development of the net patterns should be what?

Construction lines

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows When developing a 90* rectangular elbow net pattern, the first step is what?

Begin by drawing a right angle.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows When developing a 60* rectangular elbow net pattern, the first step is what?

Draw the base line.

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows When developing the 60* elbow, the short arc that cuts the first arc drawn is swung from what?

Where the arc intersects the baseline

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows When measuring and marking the throat radius and opening, this is done on the what?

Baseline

1st YEAR SIMPLE LAYOUT DEVELOPMENT Rectangular Elbows The heels and throats of a rectangular elbow are sometimes referred to as runners. TRUE or FALSE

True

BASIC 1st YEAR THEORY Hand Tools List the 3 uses of a circumference ruler.

1. Find circumference 2. Measure 3. Scribe straight or curved lines

BASIC 1st YEAR THEORY Hand Tools Explain why the hook on the end of a flexible tape ruler should be movable.

The hook end should be movable to allow for accurate inside and outside measurements.

BASIC 1st YEAR THEORY Hand Tools The long part of a steel square is called ______ and the short part is called _______.

Body and tongue

BASIC 1st YEAR THEORY Hand Tools What tool would you use to scribe an arc or circle larger than 42" 1. Trammel point 2. Scriber 3. Spring type dividers 4. Protractor

1. Trammel point

BASIC 1st YEAR THEORY Hand Tools A good tool for accurately transferring measurements is a : 1. Tape measure 2. Combination square 3. Vernier caliper 4. Set of dividers

4. Set of dividers

BASIC 1st YEAR THEORY Hand Tools What way do green handled aviation snips cut?

From left to right

BASIC 1st YEAR THEORY Hand Tools What is the advantage of combination snips over straight snips?

Combination snips have a cutting blade that curves away from the cutting edge. The removal of the blade allows the metal to roll over the blade easier which enables you to cut smaller radius curves.

BASIC 1st YEAR THEORY Hand Tools A 32 tpi (teeth per inch) hacksaw blade is the best choice for cutting what type of material

thin stock

BASIC 1st YEAR THEORY Hand Tools Is it conceded dangerous to use a chisel that has its head mushroomed?

Yes

BASIC 1st YEAR THEORY Hand Tools What type of punch is used to transfer patterns onto sheet metal?

Prick punch

BASIC 1st YEAR THEORY Hand Tools What is the purpose of the wedge when replacing a hammer handle?

The wedge is used to tighten the end of the handle in the eye of the hammerhead.

BASIC 1st YEAR THEORY Hand Tools What is the size of a pair of pliers determined by what?

The overall length of the tool.

BASIC 1st YEAR THEORY Hand Tools What is the advantage that vise grips have over pliers?

when you need to maintain constant pressure

BASIC 1st YEAR THEORY Hand Tools Using clamps when working around power tools or equipment can substantially enhance _____ and ____.

Safety and accuracy.

BASIC 1st YEAR THEORY Hand Tools How is the size of a pair of C-clamps determined?

Clear opening of the jaws

BASIC 1st YEAR THEORY Hand Tools What is the first thing that you should consider when selecting a screwdriver for a particular job?

Make sure that the tip of the screwdriver fits the screw head shape and size.

BASIC 1st YEAR THEORY Hand Tools What is the purpose of the hole on the side of a rivet set?

To allow pieces of metal to fall out.

BASIC 1st YEAR THEORY Hand Tools An adjustable wrench is recommended to be used when?

The proper fitting wrench is not available.

BASIC 1st YEAR THEORY Hand Tools What are files classified by?

The length, shape and cut

BASIC 1st YEAR THEORY Bench Machines What are the two categories of turning machines?

1. Throatless and deep throat

BASIC 1st YEAR THEORY Bench Machines What do you call a rolling machine that has a top roller that is half round in shape and a bottom roller that is cylindrical and tapering at the end?

WIre roller. It is used to close and finish the turned edge of a job that has a wired edge.

BASIC 1st YEAR THEORY Bench Machines What do you call a rolling machine that has a top roller that is v shaped and a bottom roller that cylindrical with a v shape groove in it?

Elbow edging roller. It is used to form the seam and join together the sections of gores of a round elbow fitting.

BASIC 1st YEAR THEORY Bench Machines What do you call a rolling machine that has a top roller that is a cylindrical with a curved upset next to a curved inset. The bottom roller will mate with the top roller?

Ogee bead roller. It is used to form 2 beads. One on the inside and one on the outside.

BASIC 1st YEAR THEORY Bench Machines What machine is used to turn up a 3/16" flange on a cheek for a rectangular elbow?

Easy edger

BASIC 1st YEAR THEORY Bench Machines Is the capacity of a turret punch is the same for every punch and die? TRUE or FALSE

FALSE

BASIC 1st YEAR THEORY Bench Machines If you want to cut a 42" circle on the ring and circle shear. What would you set the gauge on the scale to?

42"

BASIC 1st YEAR THEORY Bench Machines What gives the throatless bench shears the ability to cut metal up to 3/16" thick?

Compound leverage system

BASIC 1st YEAR THEORY Bench Machines What part of a barfolder do you adjust to change the radius of a bend?

Wing

BASIC 1st YEAR THEORY Bench Machines What two factors determine the capacity of the slip roll forming machine?

1. length of the rolls | 2. diameter of the rolls

BASIC 1st YEAR THEORY Bench Machines Which stake has 2 horns; a round tapering one and an irregular shaped horn on the other?

Beakhorn Stake

BASIC 1st YEAR THEORY Bench Machines Name 2 stakes that have 2 shanks?

1. Double seaming stake with 4 heads | 2. Solid mandrel

BASIC 1st YEAR THEORY Bench Machines Name 3 processes that should NOT be performed on a stake.

1. Never used as a back up for a drill, prick or center punching 2. Never be used to cut metal on with a chisel. 3. Only use a mallet on the metal of a stake.

BASIC 1st YEAR THEORY Bench Machines What is used on a bench vise when you want to protect a project from being scratched or marred?

Vise liners

BASIC 1st YEAR THEORY Bench Machines Name 3 materials soft jaws can be made from?

1. Aluminum 2. Wood 3. Copper

BASIC 1st YEAR THEORY Floor and Power Equipment When selecting an extension cord for a portable power tool what should be considered?

The longer the cord, the greater the resistance to the flow of electricity.

BASIC 1st YEAR THEORY Floor and Power Equipment Name the 3 ways a potable drill can be powered.

1. electrical powered 2. battery operated 3. pneumatically operated

BASIC 1st YEAR THEORY Floor and Power Equipment What are 2 types of shanks found on twist drills?

1. Straight shank | 2. Taper shank

BASIC 1st YEAR THEORY Floor and Power Equipment What do you call a portable grinding disk that runs at 90* to the body?

Angle grinder

BASIC 1st YEAR THEORY Floor and Power Equipment What portable power tool uses a punching action to cut through metal?

Nibblers

BASIC 1st YEAR THEORY Floor and Power Equipment What is the minimum width of a bend that can be obtained at the full capacity and entire length of a standard hand brake, if the angle bar and insert bar are in place?

BASIC 1st YEAR THEORY Floor and Power Equipment When adjusting a standard hand brake for metal thickness, how many thicknesses must you set the nose bar from the bending leaf if the metal is within 4 gauges of the capacity?

2 Metal thickness

BASIC 1st YEAR THEORY Floor and Power Equipment What brake has adjustable, removable fingers instead of a solid nose bar?

Box and pan brake

BASIC 1st YEAR THEORY Floor and Power Equipment What is the upper blade of a squaring shear attached to?

The crosshead

BASIC 1st YEAR THEORY Floor and Power Equipment Name the gauges that can be found on a squaring shear.

1. Back gauge 2. Side gauge 3. Front gauge 4. Bevel gauge

BASIC 1st YEAR THEORY Floor and Power Equipment How are feed rates for twist drills measured?

Inches per revolution

BASIC 1st YEAR THEORY Floor and Power Equipment Why do ban saws offer greater cutting efficiency than other cut off machines?

The blade cuts with no waste of motion.

BASIC 1st YEAR THEORY Floor and Power Equipment What is a another term for spot welding?

Resistance welding.

BASIC 1st YEAR THEORY Floor and Power Equipment What does the material have to be to be cut with a plasma cutter?

Electrically conductive

BASIC 1st YEAR THEORY Floor and Power Equipment What piece of equipment does the same job as an easy edger?

Power flanging attachment.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What does the plenum do to the air flow leaving the furnace?

it allows the air leaving the furnace to lose some of its turbulence and equalize pressures and speeds before being delivered to the rooms.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components When ordering a plenum for a furnace what info do you need?

You need to know the furnace connection ( duct width X duct height X required rise ). A plenum is usually ordered with and end cap.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is a PTO?

Plenum take-off. its the first piece of duct that comes off the plenum to the truck . It is accepted trade practice to maintain the inlet at 1.5 X the cross-sectional area of the duct it is being attached to.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What fittings are used to change direction?

1. Elbows 2. Offsets 3. Branch fittings

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define a "shortway elbow".

Also called a stack elbow has the short dimension of the fitting on the cheek.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define a "longway elbow".

Also called a sweep elbow has the long dimensions of the fitting on the cheek.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define a " change elbow"

Is and elbow that has a different size on the other end.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define a "Offset"

Also called a riser (ran horizontal and offset is ran vertically). The fitting changes direction horizontally from side to side.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What info must be given when ordering an offset fitting?

The size of the duct and the offset must be given. The length of the offset is 2 times or more the given offset.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What info must be given when ordering a change offset fitting?

Both sizes need to be given and the amount of offset will refer to the smallest amount of change on the offset. The length of the offset is 2 times or more the given offset.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What are branch fittings?

They are used to split airflow into different directions.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define " Transition or Reducer Fitting"

a fitting that changes the size of the duct smoothly. In residential installations a reducer only changes its width and are flat on one side is very common.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is required information when ordering a Transition?

You need to give the 2 duct sizes and the amount of change. (F1S) is Flat one Side. (on c with line running vertical) on center. (FOT) Flat on top.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is a duct reducing panel?

This is a panel that is attached to a modified piece of duct.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Name 5 types of take-offs

1. Top takeoff 2. Side takeoff 3. Two-way Top takeoff 4. Saddle takeoff 5. Universal takeoff (its like an adjustable elbow)

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What do you call a round end cap for spiral pipe?

Plug

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Are damper required in every branch run?

Yes. The damper should be placed either in the pipe close to the trunk line or in the diffuser.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components How offend should you support pipe when installing?

Near every joint or 5 feet.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components When it comes to pressure loss in a line, what is and elbow equal to?

10 feet of pipe

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define "Boot" fitting

The fitting that terminates an spiral pipe run to the register.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components List 4 types of boot fittings

1. End Boot 2. Universal Boot 3. Right angle Boot 4. Kickboot

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components A common boot in residential is a 3"X10". What size is required for a high efficiency furnace system

4"X10" due to higher flow rates.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define Stack Ducts

This is where boots are used to transition branch runs to rectangular duct then back to spiral. This is seen in walls when a 5" or 6" run is required to go up a 2X4 wall to a second floor.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define Diffuser

This is the final part of a air run. They have louvers in them to spread the air flow into a room.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Why do you need a special type of termination grill in a basement wall stack?

If you use a diffuser with a damper, it will stick too far into the duct and will cut off air flow.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is the purpose of a Return Air line?

it consists of parts to bring the air back from the occupied space to the furnace.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Define Joist Liner

Its a product that is used to finish closing off the space between floor joists that are being used as return air lines.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What are 4 types of material that can be used as a Joist Liner?

1. Light gauge metal with slip lock formed on the ends. 2. Thermopan 3. Plastic 4. Drywall

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Why is are fittings with sharp corners and poor airflow allowed in a return duct?

This is allowed because of the large sizing of the return duct reduces the air speed and the turbulence inside the duct system.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components Why must underslab duct be sealed with approved products?

To keep the moisture from the concrete entering when it is being poured.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What are the 2 purposes of "Slab Stakes"?

1. To hold the duct off bottom to allow concrete to surround the duct. 2. To prevent the duct from floating when slab is being poured.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What type of pipe is mandatory to use when venting high efficiency appliances?

ULC S636 has become the standard for all of this type (BH) of venting. It has its own special solvent cement for gluing.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is a "Vent Connection"

Is the portion of the combustion venting system that conveys the flue gases from the appliance to the common vent or chimney.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is B-vent?

It is double walled vent that is used to vent combustion gases through combustible building materials.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What can you never do to B-vent?

It should NEVER be cut or modified. You can purchase adjustable lengths of B-vent.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is B-vent made of?

The outer layer is Galvalume and the inner liner is aluminium.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is Galvalume made of and its temperture rating.

It is steel coated with 55% aluminium and 45% zinc. It has a temperature rating of up to 470*F (243*C)

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is L-vent used for?

It is similar to B-vent but the inside liner is stainless steel. It is used to vent oil-fired furnaces which have hotter products of combustion.

1st YEAR INTRO TO BLUEPRINT READING AND RESIDENTAIL HVAC Res. HVAC Components What is A-Vent?

It is double walled stainless steel pipe with 1" fire proof insulation between the two walls. It is rated for 1000*F continuous fire with a test temperature of 1700*F for 10min. It is used for solid fuel appliances.

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation Name the two ways that sheet metal are fastened together.

1. Forming seams on the 3 pieces of metal | 2. Fastening devices (crews, bolts rivets or cleats)

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What is another name for the peen seam?

Single Seam

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What is the function of a drip edge?

Divert water away from the structure it is attached to.

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation The Pittsburgh Lock can withstand higher operating pressures than the button lock. TRUE or FALSE

True

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What type of notch is cut at a 45* angle to prevent overlapping of the edges when single hems are to meet at right angles?

Slant Notch

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What are the two basic types of blind rivets?

1. Open end | 2. Closed End

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation To obtain the full strength of a riveted joint, a rivet of _____ and _____ must be used.

Length and diameter.

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation Name 5 types of screw heads typically used by sheet metal workers.

1. Slotted 2. Robertson 3. Phillips 4. Hex Head 5. Combination

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What type of anchor is a setting tool used with?

Drop-In Expansion Shell Anchor. The one end has a cone shaped plug inside that is driven in with a setting tool after it has been dropped into a pre-drilled hole.

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation The plastic toggle anchor can be used in hollow and solid block walls. TRUE or FALSE

TRUE

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation Name 4 reasons for using caulking.

1. Moisture resistance 2. Air tightness 3. Thermal performance 4. Aesthetics

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What is the surface temperature range duct sealer must withstand?

-30*F to 175*F

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation Hot melt sealants are usually applied in the field? TRUE or FALSE

FALSE

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation What are the 2 bases that duct sealer can be made of?

1. Water | 2. Solvent

BASIC 1st YEAR THEORY Seams, Fasteners, Sealants and Insulation Name 3 reasons for installing metal nosing on the duct liner?

1. When air velocity exceeds 4000 feet/minute to hold insulation. 2. When unlined duct meets lined (insulated) duct. 3. When transverse edges are facing the air stream at the fan discharge

BASIC 1st YEAR THEORY Materials What are metals like gold, copper and aluminum in pure form are examples of what?

Metallic Elements

BASIC 1st YEAR THEORY Materials Solid sheets of metal with round holes punched in them are referred to as what?

Perforated

BASIC 1st YEAR THEORY Materials What is the process used to release internal stresses in a hardened metal such as steel?

Annealing

BASIC 1st YEAR THEORY Materials Ferrous metals or metals with iron in them are gauged using what tool?

U.S. Standard Gauge

BASIC 1st YEAR THEORY Materials What is mild steel also known as?

Low carbon steel

BASIC 1st YEAR THEORY Materials Which is harder, hot rolled black iron or cold rolled black iron?

Cold roll is slightly harder.

BASIC 1st YEAR THEORY Materials Name 2 processes used to apply zinc to mild steel sheets?

1. Hot dip galvanizing | 2. Electrogalvanizing

BASIC 1st YEAR THEORY Materials A 24 gauge of galvanized iron will measure the same thickness as a 24 gauge sheet of black iron. TRUE or TALSE

FALSE

BASIC 1st YEAR THEORY Materials What is the name of the ore that aluminum is obtained from?

Bauxite

BASIC 1st YEAR THEORY Materials What is the name of the metal thickness gauge used with aluminum?

American Standard Wire Gauge or Brown and Sharpe gauge.

BASIC 1st YEAR THEORY Materials How is copper gauged?

Ounces per foot

BASIC 1st YEAR THEORY Materials What are the 2 alloys that make brass?

1. Copper | 2. Zinc

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Brittleness

The ability to withstand distortion. They shatter easily when hit.

BASIC 1st YEAR THEORY Materials Plastics are divided into 2 basic categories according to what properties?

Thermal properties

BASIC 1st YEAR THEORY Materials Give 2 examples of how PVC duct can be joined together.

1. Thermal welding | 2. Flanging and bolts

BASIC 1st YEAR THEORY Materials What are the 2 advantages of fibrous glass duct?

1. Light weight. Making it easier to remove or install | 2. Has superior thermal and acoustic qualities compared to steel.

BASIC 1st YEAR THEORY Materials Fibre glass reinforced resin ductwork cannot be welded together. TRUE or FALSE

TRUE

BASIC 1st YEAR THEORY Materials What is the disadvantage of flexible duct?

Extremely high friction loss

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Conductivity

Having the ability to transfer heat or electricity. Copper is an excellent example.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Elasticity

Is the tendency of a metal to return to its original shape after forces have caused the metal to become deformed.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Elasticity

Is the tendency of a metal to return to its original shape after forces have caused the metal to become deformed. All metals have an elastic limit.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Hardness

Is the ability of a metal to resist forces that tend to push the molecules apart. It resists penetration, scratching and wear. Tempered steel is a good example.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Malleability

Is the ability to withstand mechanical processing such as rolling, forging and hammering without breaking. Copper is VERY malleabie.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Strength

Is the amount of high, steady stress a metyal can withstand before it yields. Stainless steel is a strong metal.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Strength

Is the amount of high, steady stress a metal can withstand before it yields. Stainless steel is a strong metal.

BASIC 1st YEAR THEORY Materials According to the properties of metal, Define Toughness

Is that ability of a metal to withstand an impact. The metal will NOT brake or shear easily and will stretch without breaking. Titanium is a tough metal.

BASIC 1st YEAR THEORY Materials According to metal, Define Quenching

Is the process when hot metal is quickly cooled in water or oil. This usually hardens metal and creates internal stress in most metals except in copper, silver and certain alloy which softens it.

BASIC 1st YEAR THEORY Material Bending Allowances Define Bend Allowance

The action of the brake creates stretch or tension at the outside of the bend and compression at the inside of the bend.

BASIC 1st YEAR THEORY Material Bending Allowances What happens when a bend allowance is not added into your material layout?

The finished measurements will not be accurate do to the stretching and compression of material at the brake.

BASIC 1st YEAR THEORY Material Bending Allowances What are some factors to keep in mind when figuring out a bend allowance?

1. Thickness of metal 2. Sharpness of the bend 3. Type of metal being used

BASIC 1st YEAR THEORY Material Bending Allowances What is the difference between sheet metal and plate?

Sheet metal has a thickness of 1/8" or less. | Plate has a thickness over 1/8"

BASIC 1st YEAR THEORY Material Bending Allowances Do bend allowances become more critical as material gets thicker?

Yes

BASIC 1st YEAR THEORY Material Bending Allowances What is the bend allowance for inside dimensions?

When using inside dimensions add 20% of the thickness of the metal you are working with to each side of the bend line.

BASIC 1st YEAR THEORY Material Bending Allowances What is the bend allowance for outside dimensions?

When using outside dimensions add 80% of the thickness of the metal you are working with to each side of the bend line.

BASIC 1st YEAR THEORY Material Bending Allowances Is the bend allowance formula of adding 20% for inside and 80% for outside dimensions accurate?

NO, due to many factors such as dyes dies and actual vs. planned material thickness. Do a test piece with the same material, length and angle of bend desired. Then measure and use the true bend allowances from the test piece.

BASIC 1st YEAR THEORY Material Bending Allowances Do all materials have the same bend allowances?

NO. Aluminum and some softer brasses are different. These materials will stretch and compress at a greater rate than steel. A safe radius for bends is 3 times the thickness of the material.

BASIC 1st YEAR THEORY Material Bending Allowances Define Mean Diameter

The term Mean is the value that is the midway between two extremes. Mean diameter is the value at the midpoint between the inside and outside surface of a circle.

BASIC 1st YEAR THEORY Material Bending Allowances How do you calculate the Mean Diameter?

You take the inside diameter of the round material then add 1 thickness of material being used.

BASIC 1st YEAR THEORY Material Bending Allowances When forming material into a tube. Is the actual formula the same for all material thicknesses?

NO. Material up to 18 gauge use 7 times material thickness. 16 gauge and heavier use Mean Diameter.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise How are filters tested for efficiency?

1. Dust spot test 2. Dust weight arrestance test 3. Fraction efficiency test

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Fibrous media filters will remove particles as small as 0.3 microns. TRUE or FALSE

FALSE

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise The efficiency of a passive electrostatic filter will do what to the humidity after the air passes through it?

Decease the humidity

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Electronic air cleaners are made of what materials?

1. Pre-filter 2. Ionizing wires 3. Collector plates

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise What will happen to the your skin when air moves over it?

You will feel cooler because of heat loss.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise What happens to the air in a large room when there is no air movement?

Stratify, air to become stagnant and stale.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Noise can have effects on you by causing what?

1. Annoyances 2. Headaches 3. High stress levels

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise How long can you be present in 70 dB noise?

As long as you want. There is no effects on hearing loss.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Noise generated in the HVAC system should be of no concern. TRUE or FALSE

FALSE

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Exposure to indoor air pollutants is _______ times greater than outdoor pollutants.

100 times

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems Give 3 reasons why roof mounted HVAC equipment is widely used for commercial structures in multi-equipment configurations

1. The fresh air ventilation requirements of the occupied space 2. Better service access while not disturbing occupants 3. Does not take away from interior floor space

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems Which building, using a multi-equipment configuration, requires a higher than average amount of cooling due to high internal heat internal heat and infiltration?

Convenience store because 1. entrance is always being opened 2. Food equipment inside produces heat 3. People inside store produce heat

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems What are 2 stated advantages of multi-equipment systems?

1. Comfort | 2. Efficiency

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems What 1 word describes why multi-equipment systems are more efficient?

Zoning

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems Zoning helps to eliminate cold and hot areas and gives ______ to the individual living or working in that particular area.

Comfort control

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems In a residential forced air system, using zone dampers, where should a bypass relief damper be installed?

In between supply and return-air plenums

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems In multi-equipment configurations, every furnace and fan-coil requires its own what?

Requires its own return air trunk-line

BASIC 1st YEAR INDOOR AIR QUALITY (basic blue print reading) Multi-Equipment Systems A dedicated HRV system is used to provide ________ in areas or zones that otherwise have none.

ventilation

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What should be done before the unit can be started?

Do not attempt to start the unit, even momentarily, until all of the items on the start-up check list have been completed.

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What are the 4 steps required to change the compressor rotation?

1. Turn off the power to the unit and lock out the power. 2. Switch any two of the incoming unit power leads 3. Turn on the power to the unit. 4. Verify corrected compressor rotation.

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What should the gas supply pressure range be?

5.5" to 13" (WC) water collume

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What should the manifold gas pressure be set at?

3.5" (WC) water collume

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What is a tachometer?

A device that measures the speed at which a mechanical device is rotating.

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What are 2 main types of tachometers?

1. Contact type | 2. Non-contact type

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What type of tachometer is a strobotac?

Is a non-contact type of rpm counter.

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment The adjustable pulley is installed on which component?

On most belt drive blower assemblies.

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What is the formula for calculating pulley size?

Dm = (Dm X Sf) / Sm

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What is the formula for calculating pulley speed?

Sf = (Dm X Sm) / Sf

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What is the formula for calculating belt length?

OC = (Dm + Df) 1.57 + 2L

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What is the purpose of the flame safety control on a make-up air unit?

It is only there to monitor the flame, NOT to control the temperature.

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment What are the 6 tools required to do a start up on a make-up air unit?

1. Manometer 2. Volt/ohm meter 3. amp meter 4. tachometer 5. thermometer 6. standard hand tools

BASIC 1st YEAR INDOOR AIR QUALITY (advanced systems controls) Troubleshooting Commercial HVAC Equipment List the 3 methods used to reset a unit.

1. Press the reset button on the fire eye burner control. 2. Turn off the power to unit. 3. Wait 10 seconds and turn power back on.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What type of burn penetrates the skin to the flesh below?

2nd Burns.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What is the most dangerous type of light ray emitted by welding?

Infrared Rays

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety Cylinders of compressed inert gasses are not flammable or reactive and are not dangerous. TRUE or FALSE

FALSE

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What are fumes made of?

Are small particles in the air as result of the welding process. They could be bits of metal or chemicals released from paint, coating or flux.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What are gases?

Is a fundamental state of matter. Gases in welding are usually shielding gases.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety Welding lenses will protect you from what % of harmful light rays?

99%

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety List the 3 types of clothing in order of ability to protect, starting with the best.

1. Leather 2. Wool or Tweed 3. Cotton drills and denim

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What 2 work procedures will a face shield or safety glasses protect your eyes?

1. Chipping | 2. Grinding

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety When welding, why are screens or blinds put up for?

To protect others and equipment

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What are the 3 components of fire?

1. Heat 2. Air 3. Fuel

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety There are 5 classes of fire. For each class, list the types of combustible involved.

1. Class A : Wood and Paper 2. Class B : Oil and Grease 3. Class C : Electrical Components 4. Class D : Combustible Metals 5. Class K : Kitchen Fires

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety Whose is responsibility is it to determine hazards?

It is the workers responsibility to determine what hazards exist and to protect co-workers, yourself and the workplace.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety What is the maximum safe working pressure for acetylene?

15psi

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety Acetylene cylinders are protected against explosions by the use of what?

Fusible plugs

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding Safety Oxygen cylinders are protected against explosions by the use of what?

Frangible disc

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is another term for spot welding?

Resistance Welding

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Give examples of materials that are easy to spot weld.

Uncoated materials like black iron also coated galvanized iron

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Give examples of materials that are hard to spot weld.

Aluminium and stainless steel but require more temperature, time and pressure to spot weld

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is the reasonable spot welder tip diameter?

1/8' plus 2 material thickness being used.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is the proper name for stick welding?

SMAW Shielded Metal Arc Welding. The electrode is also called a rod.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is SMAW electrode (rod) made of?

A core metal covered with a flux coating

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is the proper name for mig welding

GMAW Gas Metal Arc Welding

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define Mig welding (GMAW)

An arc welding process that joins metals by heating them with an electric arc established between a continuously fed filler metal (consumable) electrode and the work piece.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define FCAW welding

Flux Cored Arc Welding uses an arc established between a continuously fed consumable flux cored wire electrode and the work piece.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define GTAW welding

Gas Tungsten Arc Welding, often referred to by the term Tungsten Inert Gas (TIG). It is the welding process in which fusion welding is accomplished by the heat of an electric arc drawn between a non-consumable tungsten electrode ant the piece work.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What are the proper steps to lighting and turning off a oxy/acetylene touch?

AOOA. Acetylene first then oxygen to light. To put out oxygen then acetylene is turned off.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What are 3 types of malfunctions that you can experience with oxyfuel equipment?

1. Backfires 2. Burnbacks 3. Flashbacks

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define Backfires

The flame on a oxy/fuel touch backs up into the tip

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define Burnback

The flame on a oxy/fuel touch backs up into the tip and the mixer.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define Flashback

In certain conditions, such as grossly unequal pressures, faulty seats or faulty manipulation of valves. The gas may go back into the other line making an explosive mixture that ruptures the hoses.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is required when blazing 2 metals together?

Very close tolerances.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Give 2 advantages of brazing.

1. Can connect to dissimilar metals | 2. Joints up to 60,000 psi tensile strength are possible

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Define Fluxes

Are deoxidation agents, also known as cleaning agents

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What is an important preparing step when brazing?

The materials must be cleaned to remove all contaminants from the joint surfaces.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes When using a cutting touch to cut iron what is really happening to the material?

This is a form of rapid oxidation.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What type of material can be cut with a oxy/fuel torch?

The material must be Ferrous (containing iron) for the rapid oxidation to happen.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What are the advantages to Plasma Cutting?

1. Greta speed 2. No preheating required 3. A very narrow heat affect zone 4. Can cut any metal that conducts electricity

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings In the trades what do you call the type of plastic that becomes soft when heated and hard when cooled?

Thermoplastic

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What is the color of ABS DWV pipe? and what is the color of PVC DWV pipe?

ABS DWV pipe is BLACK | PVC DWV pipe is GREY

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings List 5 advantages of plastic pipes over ferrous pipes.

1. Resistant to a wide range of chemicals 2. unaffected by electronic corrosion 3. High corrosion resistance 4. Smooth bore, less friction 5. Absorbs vibration and shock well 6. Economical 7. Use to join 8. Light weight

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings List 3 disadvantages of plastic pipe over ferrous.

1. Low in tensile strength 2. Deformation under load 3. low fire resistance 4. Low ductilivity

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings Which DMW pipe has the highest temperature rating?

ABS pipe

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What type of pipe do you use for underground gas line?

High-density polyethylene

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What is the minimum surface temperature recommended for solvent cementing plastic pipe and fitting?

5*C (40*F)

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What colour is Polypropylene pipes and fittings?

Brown

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings The type of plastic that is very similar to polypropylene is _______ and is ________ in colour.

Proxylene and is blue in colour

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings Define Nesting Pipe

The storage of pipe with smaller sixes inside of larger pipe.

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What are large diameter plastic sewer or water lines joined with?

Bell-type joints

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings List 3 plastic-type materials that are best suited for acid waste and vents.

1. Polyethylene 2. Polypropylene 3. Proxylene

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings The National Plumbing Code of Canada - 2010 requires that rigid plastic pipe must be supported every ______ ; flexible pipe should be supported every ______.

rigid plastic pipe 1.2m (4') | flexible pipe 0.8m (30")

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings Name 3 different ways you can join plastic pipe with heat?

1. Bush lock welding 2. Socket fusion welding 3. Electric resistance fusion (Fuseal) 4. Hot air fillet weld

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What can plastic acid waste pipes be joined with?

1. Fusion welding | 2. Acid-resistant mechanical joints

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What is the standard length of DWV plastic pipe?

12' lenghts

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What are used to check the temperature of the plastic for fusion welding?

Temp-sticks

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What are the 2 types of plastic tube best suited for radiant panel heating?

1. PEX | 2. PE/AL/PE

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What are the 3 types of plastic pipe approved for domestic water line.

1. Polyethylene 2. PE/AL/PE 3. PEX

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What are 2 types of plastic that are used for hot water systems?

1. PEX | 2. PE/AL/PE

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings When connecting plastic pipe to metal pipe, the plastic must be what thread?

MIP thread

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings List 3 types of plastic that can be joined with solvent cements

1. ABS 2. PVC 3. CPV

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What is the type of light ray that deterioration of plastic?

Ultraviolent Rays (UL Rays)

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What do you do with solvent that starts to gel?

Do NOT use and must be disposed of in a safe and proper manner.

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What must you ensure you do before butt welding plastic pipe and fittings?

Pipe ends must be square

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What must you ensure you do before applying solvent cement on PVC pipe and fittings?

Clean and primer.

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What type of plastics gives off toxic gases?

1. PVC | 2. CPVC

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings A 200mm (8") is solvent cemented at a temperature of 10*C (41*F). What is the curing time?

12-48 hours before the line can be pressure test.

BASIC 1ST YEAR THEORY Plastic Pipe and Fittings What is used to keep plastic pipe round when threading?

A round wooden piug inserted into the pipe end.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise What are the different types of filters you can have?

1. Fibrous media filters 2. Pleated media filters 3. Electrostatic filters 4. High efficient electronic cleaners 5. HEPA High Efficient particulate Arrestance

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Define Stratification of air.

It is when the air does NOT move and settles into different temperature layers.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Define Cross Talk

Is noise that can travel through the duct bypassing noise insulation created by walls.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise What are the 3 major categories of indoor air pollutants?

1. Particulates 2. Bioaerosols 3. VOC Volatile Organic Compounds

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Define Breathable Particle

A particle that is 1 micro or smaller that can bypass a persons defence system and be inhaled into the lungs. More than 99% of Airborne particles are smaller than a micro.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Define Bioaerosols

Are particles of organic living matter. Examples are bacteria, molds, fungi and insect remains

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise Define VOC

Volatile Organic Compounds. They are created from the release of gases from man-made products. Examples are carpet, composite wood produces and house hold chemicals.

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise What is the % of all indoor air quality related problems involved in operating and maintaining the HVAC system?

70%

BASIC 1st YEAR INDOOR AIR QUALITY Air Filtration, Circulation and Noise How many micro's in a millimeter?

``` 1000micro = 1 mm 1,000,000 = 1meter ```

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems Define RTU

Roof Top Units

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems What are the 2 types of Multi-equipment systems?

1. Residential | 2. Commercial

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems What are the different types of residential HVAC systems?

1. Furnace 2. Fan-coil 3. Heat Pump 4. Boiler providing radiant heat to all levels 5. Boiler providing radiant heat to basement, furnace to remainder 6. Boiler providing radiant heat to basement, fan-coils to remainder 7. Geothermal providing heat to basement and HVAC

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems What are types of equipment that supply heat for fan-coils?

1. Boilers | 2. Tank-less

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems In light commercial sites what are the 4 sources of heat gain in the building come from?

1. Abundance of windows 2. Equipment and lighting 3. Infiltration 4. People

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems Define Infiltration?

How unconditioned air enters a conditioned space.

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems What is an economizer?

A damper that allows a controlled amount of fresh air into to a system. Commonly 15% to 25% fresh is introduced.

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems How many tons of cooling is required for a convenience store that is 2000 to 3000 square feet?

12-15tons of cooling is required.

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems Define MUA

Make-Up Air Unit

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems What are 2 advantages of Fan-coils?

1. There is NO heat exchanger in the air stream | 2. Cooling and humidity can be added and centrally distributed.

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems What is the cfm for a range hood?

400-1200cfm

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems Define TFP

Turbulent Flow Precipitator. It is a filter that was invented in Canada, that a series of perforated plates where dust particles are slowed down. These causes them to fall out of the air stream.

BASIC 1st YEAR INDOOR AIR QUALITY Multi-Equipment Systems How many duct connections on a HRV unit?

1. Outside, is for the outlet side of the stale air exhaust 2. Outside, inlet side of the fresh air 3. Inlet side of the stale air 4. fresh air supply is ducted back into the return air portion.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Name the 3 states of matter

1. Solid 2. Liquid 3. Gas

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What are the characteristics of a liquid state?

Has definite volume and definite weight but no definite shape.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What 2 factors influence the state that matter exists in?

1. Temperature | 2. Pressure

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define specific gravity as it applies to solids or liquids

It is the comparison of the weight of a volume of a substance (liquid or solid) compared to an equal volume of water.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the specific gravity of water?

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion How many times is mercury than water?

13.6 times heavier than water

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define specific gravity as it applies to vapour (gases)

It is the comparison of the weight of a volume of a substance (gas or vapour) compared to an equal volume of air.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the density of air at STP?

0.076 pounds per cubic foot.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the specific gravity of natural gas (methane)?

0.6

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the specific gravity of propane liquid?

0.51 (0.508)

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define British Thermal unit

The amount of heat energy required to raise the temperature of 1 pound of water 1*F.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the boiling point for water in *F?

212*F

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the density of water in lb/cu ft?

62.4lbs

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the density of air in lb/cu ft?

0.076lbs

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What are the 3 main gases in the atmosphere an there % ?

1. Nitrogen 79% 2. Oxygen 20% 3. Other Gases 1%

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What is the flame temperature and ignition temperature of propane/

Flame 3500* F | Ignition 940* F

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define the term Combustion?

The rapid oxidation of a fuel resulting in the production of heat or heat and light.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion When gas burns properly, the hydrogen combines with the oxygen of the air to produce ___ ___, the carbon combines with the oxygen to produce ____ ____ and the ______ in the air passes through the flame unchanged.

water vapour carbon dioxide nitrogen

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Combustion Air

The air required to completely burn the fuel.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Primary Air

Air required for the initial stages of the combustion process and is mixed with the fuel prior to combustion

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Secondary Air

Air required for the intermediate and final stages of the combustion process and is added to the flame to produce complete combustion.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Excess Air

Air supplied for the combustion process in excess of, but not required theoretically.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Products of Combustion

Constituents resulting by uniting fuel with oxygen. This is usually thought of as being gas, primary and secondary

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Range of Flammability

The percentage of gas present in a gas/air mixture between the upper and lower limits that it will burn.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Incomplete Combustion

Combustion that does not convert all the carbon and/or hydrogen into water vapour and/or carbon dioxide

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Lift Off

The gas/air mixture speed exceeds the flame speed resulting in a flame that burns too high above the burner.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion Define Flashback

The gas/air mixture speed is slower than the flame speed causing flame to burn inside the burner, possibly at the orifice.

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What 3 components are required for combustion?

1. Fuel 2. Heat 3. Oxygen

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What product creates the main concern when incomplete combustion occurs?

Carbon Monoxide

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What flame colour is most likely to indicate poor combustion?

Yellow

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What flame colour usually indicates dust or dirt passing through the flame?

Orange

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What colour of flame indicates good combustion?

Blue

BASIC 1st YEAR RESIDENTIAL HVAC INSTALLATION Properties of Gas and Principles of Combustion What are 4 symptoms associated with carbon monoxide poisoning?

1. Headache 2. Dizziness 3. Short of breath 4. Mental confusion

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The safety of workers and job site is governed by which code? 1. OH&S 2. B149.1-05 CAN/CSA 3. NBC 4. ABC

1. OH&S

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The installation of gas appliances and piping is governed by which code? 1. OH&S 2. B149.1-05 CAN/CSA 3. NBC 4. ABC

2. B149.1-05 CAN/CSA

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Building construction standards specific to Alberta are covered by which code? 1. OH&S 2. B149.1-05 CAN/CSA 3. NBC 4. ABC

4. ABC

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Which agency conducts tests and certifies products used by consumers? 1. CSA 2. ULC 3. 1) and 2) 4. SMACNA 5. NFPA

3. 1) and 2)

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Which agency conducts tests and writes standards specifically for the HVAC industry? 1. CSA 2. ULC 3. 1) and 2) 4. SMACNA 5. NFPA

4. SMACNA

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Which agency conducts tests and writes standards related to fire protection? 1. CSA 2. ULC 3. 1) and 2) 4. SMACNA 5. NFPA

5. NFPA

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Through the use of which of the following, can ventilation requirements be achieved? 1. A HVAV 2. A specific fan interlocked with the furnace 3. An appropriately sized bathroom fan interlocked with the furnace 4. All of the above

4. All of the above

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The part of the job where the penetrations to the exterior are installed is the: 1. Rough-in stage 2. Ductwork stage 3. Final stage

1. Rough-in stage

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The part of the job where the furnace is placed in a permanent position is the : 1. Rough-in stage 2. Ductwork stage 3. Final stage

2. Ductwork stage

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The part of the job where the thermostat is mounted in a permanent manner is the : 1. Rough-in stage 2. Ductwork stage 3. Final stage

3. Final stage

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes In order to save ____ on the job site and eliminate the ____ of material, a number of ______ to the job site will be required.

time, waste, visits

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Underslab heating systems grade away from the furnace? TRUE or FALSE

FALSE

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes What are underslab heating fastened securely with slab stakes to: 1. Keep the duct off the bottom of the trench. 2. To keep the duct from floating when the concrete is poured 3. To maintain the slope of the ductwork for drainage 4. All of the above

4. All of the above

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Whose responsibility is it to ensure the job is done properly and to the applicable codes?

The installer

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes B-vent used for a common vent requires what clearance to combustible materials?

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Single wall vent connector on a wood burning appliance requires what clearance to combustibles?

18"

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The clearance between an exhaust hood and the regulator vent on a natural gas or propane line coming into a building is how many feet?

3 feet

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes The clearance between a mechanical fresh air intake hood and the regulator vent on a natural gas or propane line coming into a building is how many feet?

10 feet

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes Explain why the NFPA and the ABC requires minimum metal gauges for plenums and ductwork and clearance to combustibles on the supply plenums of forced air furnaces

Minimum gauges of material and the minimum clearances to material are required to protect the combustibles from the infrared radiation transmitted from the heat exchanger to the duct.

BASIC 1st YEAR INTRO BLUE PRINT READING AND RESIDENTIAL HVAC Residential Installation and Codes What is the distance (in feet) required between a fresh air connection to the furnace and the furnace fan inlet if the air is not tempered to 15*C or connected through an approved mixing device?

10 feet

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A Lis t 3 types of measuring tools used in the shop

1. Ruler 2. Tapes 3. Specialty devices

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A To adjust the blanks and patterns for growth, what do you remove?

1/16" per joint

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A The net pattern lines are created on a blank that has been cut to size by what?

Marking the allowances.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A What are the 2 adjustments that need to be checked when using a brake?

1. Distance between the top leaf and the folding leaf | 2. The clamping pressure

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A When using a box-and-pan brake, the operator should always do what?

Check the alignment of the fingers to ensure that they are straight.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A Over-bending of material in the brake is done to compensate for what?

Spring back

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A The allowances on the curved cheeks will normally be what?

3/16"

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A Cheeks with straight sides may have the male Pittsburgh allowance of what?

1/4"

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A To properly notch the allowance of a runner that will be broken, the notch should be what type?

To the net pattern line

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A On a slip roll forming machine, the roller that is set to form the amount of curve is called what?

Rear roller

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A Y-Branches and larger fittings may require a what?

2-piece heel

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A When folding the 1/2" fold on fittings to accept a drive cheat a ______ may not be used. 1. Standard hand brake 2. Smith cleat folder 3. Cheek bender 4. Folding bar 5. Bar folder

3. Cheek bender

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A To prevent damage to the folding leaf when forming a hammerlock, it is necessary to relieve the material used the ______ of the Pittsburgh Lock. 1. Hook 2. Pocket

2. Pocket

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A List 4 advantages that the proprietary duct connection offers over a standing drive connection.

1. Fabrication of fittings and ductwork is simplified 2. The joint provides more rigidity 3. The joint makes a better seal 4. Net pattern only are required

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A Before attempting to assemble the Pittsburgh Lock, it is important to ensure what?

The lock is open and loose enough to accept the hook

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A Tacking a Pittsburgh seam refers to what?

Folding the flange over at intervals

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A If the 2 Pittsburgh Lock seam is forced all of the way closed in one pass, it will save time and look neater. TRUE or FALSE

FALSE

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A When assembling a slip-and-drive joint, the drive cleat goes on what side?

Folded side

BASIC 1st YEAR INTRO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Part A When bending over the hammerlock flange, the flange should be _______ by placing the project on a bench.

backed up

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches Rectangular change elbows not only change direction of the duct line, but also the size as well. TRUE or FALSE

TRUE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches Change elbows with a radius heel and radius throat are less efficient than those with a square heel and square throat. TRUE or FALSE

FALSE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches Square throat and square heel change elbows will direct the flow air better if what is installed in them?

Turning vanes

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches When developing the cheek for a 90* change elbow the first step would be what?

Draw a right angle

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches When drawing the heel radius of the change elbow the swing point is the same as for the throat radius. TRUE or FALSE

FALSE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches To calculate the amount of straight required for the heel the formula used is what?

Large opening minus Small opening

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches When developing the swing point for the heel radius, the method would be the same for both a 90* change elbow and a 60* change elbow. TRUE or FALSE

FALSE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches Labelling the pattern is a step that will reduce the possibility of incorrectly fabricated pieces. TRUE or FALSE

TRUE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches When calculating the stretchout for the heel of a 90* radial change elbow, the same formula is used. TRUE or FALSE

FALSE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches When calculating the heel strechout for a change elbow the formula used is what?

(Angle / 360*) X 3.14 X 2(heel radius)+straight section

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches When calculating the throat stretchout, what methods are used?

1. Mathemamatical formula 2. use a 1/4" strip of metal 3. use a Pee Wee tape

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches Y-branches are always used in residential return air duct lines. TRUE or FALSE

FALSE Residential return air rarely makes use of Y-branches to combine airstream

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches Sweep takeoffs are as efficient as Y-branched because of the curved heel and throat. TRUE or FALSE

FALSE Sweep take offs do not split the air. They let pressure push air out of them

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches To develop a pattern for a Y-branch, you need to know what?

1. Small opening size 2. Large opening size 3. What angle the small opening split off from the main opening 4. What the throat radii of the branches are

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches The throat arc radius point is the same as the heel arc radius point. TRUE or FALSE

TRUE

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches The special notch in the crotch of the heel goes from the intersection of the _______ pattern to the intersection of the ______ pattern lines.

Net | Gross

BASIC 1st YEAR PATTERN DEVELOPMENT Rectangular Change Elbows and Y-Branches The stretchout formula for a Y-branch throat is different than the stretchout formula for an elbow. TRUE or FALSE

False The formulas are the same

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets The 2 types of straight-line offsets are what?

1. Mitered | 2. Angled

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets An ogee curve is a combination of ______ and ______ curves forming 1 smooth curve.

Convex | Concave

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets A riser and an offset are two different methods of development. TRUE or FALSE

FALSE They only differ in orientation

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets To build an offset, you need to know what?

1. Duct size 2. Cheek size 3. Amount of offset 4. Length of fitting

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets The centreline is divided into how many equal parts?

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets There is no way to tell exactly where the convex and concave meet. TRUE or FALSE

FALSE The line that goes through both swing points and through the centreline is where the curves should meet.

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets The 3 methods to use to determine wrapper length are.

1. Pattern development 2. Measurement 3. Calculation

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets Instead of guessing where to change direction of the roll on a wrapper, you can calculate the point. TRUE or FALSE

FALSE You must measure the distance along the pattern

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets The most accurate way to determine wrapper length in pattern development is to measure it. TRUE or FALSE

FALSE It is difficult to align your tape on paper.

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets The method of development for a change offset is completely different for a simple offset. TRUE or FALSE

FALSE The methods are the same

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets To divide the large opening up for your centerlines, you would do what?

Use the distance from the small opening

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets If the wrapper length comes from the centerline, the right wrapper length must come from the right centerline. TRUE or FALSE

TRUE

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets You should lay out inside patterns whenever possible. TRUE or FALSE

TRUE

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets All shops use the same allowances for an offset fitting. TRUE or FALSE

FALSE Different shops may use different allowances

BASIC 1st YEAR PATTERN DEVELOPMENT Ogee Offsets You need a detailed pattern to calculate cut sizes. TRUE or FALSE

FALSE A simple sketch will do in most cases

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes A process using a continuous, solid wire electrode and an inert shielding gas is what?

GMAW Gas Metal Arc Welding

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes A process using a continuous, hollow wire electrode is with our without gas is what?

FCAW Flux Core Arc Welding

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Joining of light gauge material with a SMAW power source may be accomplished using what process?

Carbon arc welding

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams Edge distance refers to the distance between the edge material and the _______ of the fastener that will be used to secure the seam.

centre

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams What is the minimum recommended edge distance for fasteners?

2 times the fastener diameter

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams Thicker material will allow a _______ pitch to be used.

larger

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams Why are lap seams not spot welded at the ends first to hold them in place while fabricating the seam?

If the object is spot welded at either end first and the spot welds in the middle filled in later, buckling may occur

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams What is the advantage of rivets over screws or bolts?

Rivet are a means of fastening a lap seam is a more permanent manner than with screws or bolts.

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams What type of rivet is a pop rivet?

Blind rivet

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams What is the allowance for grooved seams which are lighter than 22 gauge?

3 times the width of a seam (3W)

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams When setting the fingers of the barfolder, the fingers should be set: 1. Width of the seam 2. Width of the seam minus 2 metal thicknesses 3. Width of the seam plus 2 metal thicknesses 4. One and one half times the width of the seam 5. None of the above

2. Width of the seam minus 2 metal thicknesses

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams What should you do once you have hooked the folded edges of the grooved seam together?

Set the seam tight

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams The Noyes groover can only form out side grooved seams. TRUE or FALSE.

FALSE The Noyes groover has machined in the rail to allow form inside grooved seams

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams How many brakes are on a rectangular hammerlocks?

3 brakes

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams If the seam used to fabricate the project is ______. a more specialized notch is required. This notch is called the hammerlock notch.

grooved seam

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams The dovetail seam is normally a field fabricated seam. TRUE or FALSE

TRUE

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams The pocket will not change with the adjustment of the feed guide. The pocket will always be: 1. 3/16" deep 2. 1/4" deep 3. 3/8" deep 4. 15/16" deep

3. 3/8" deep

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams The pocket will not change with adjustment of the field guide. The inside of the fitting or duct should always face which way?

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams For fittings with curved such as rectangular duct elbows, offset, and Y-branches the edge turned up is generally : 1. 3/16" 2. 1/4" 3. 3/8" 4. 15/16"

1. 3/16"

BASIC 1ST INTRO TO FABRICATION AND WELDING Joints and Seams When folding the male part of a Pittsburgh Lock in a brake or cheek bender, you should allow: 1. 3/16" 2. 1/4" 3. 3/8" 4. 15/16"

2. 1/4"

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B Flexible duct connection is used to : 1. Isolate HVAC equipment from ductwork 2. Compensate expansion and contraction of ductwork. 3. Adjust for length 4. Adjust for misalignment

1. Isolate HVAC equipment from ductwork

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B Like the flexible duct connector for round, when fabricating the rectangular duct flexible connector, the joint should be fabricated on one side; usually the longest. TRUE or FALSE

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B No adjustment to the brake is necessary when braking a rectangular flexible duct connector to the correct shape. TRUE or FALSE

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B What is the maximum length of a fire damper sleeve with breakaway connection? 1. Damper width plus 3" on both sides 2. Damper width plus 6" on both sides 3. Fire separation wall plus 6" on both sides 4. It is direct relationship to gauge of the duct work

3. Fire separation wall plus 6" on both sides

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B A fire damper may be adjusted or modified to fit odd sized ductwork: 1. if only 1" is removed from the damper 2. not at all; They are ULC rated 3. only if done the day of installation 4. only Type C dampers may be modified

2. not at all; They are ULC rated

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B A fire damper sleeve is required for a 8"X8" duct line. What size does the fire damper need to be? 1. 8" X 8" 2. 7 3/4" X 7 3/4 3. 8 1/4" X 8 1/4" 4. The information will be found in the job specifications

1. 8" X 8"

BASIC 1ST INTRO TO FABRICATION AND WELDING Flat Rectangular Fitting Fabrication - Pat B Flexible duct connection is used to : 1. Isolate HVAC equipment from ductwork 2. Compensate for expansion and contraction of ductwork 3. Adjust for length 4. Adjust for misalignment

1. Isolate HVAC equipment from ductwork

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication List the 3 types of roof jack body.

1. Cylindrical 2. Conical 3. Polygonal

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication What is the minimum distance the roof jack body fabrication seam should be sealed?

2/3 of the length of the seam

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication Seam location is more important on _____ roof jacks.

Sloped

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What is the definition of a cone?

A 3-dimensional object with a circle for a base that tapers to a point

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication The elevation view is important to develop the flat cylindrical roof jack if ___________.

there is a rain cap on the roof jack.

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication Cylindrical roof jacks use the lap seam for joining the roof jack body to the roof jacket flashing plate. TRUE or FALSE

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication What are the 2 methods of developing the hole pattern for the cylindrical roof jack on a slope.

1. Pattern development | 2. Tracing

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication Conical roof jacks use a different seam than the cylindrical roof jacks to join the body to the flashing plate. TRUE or FALSE

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication If a roof jack has more than 4 sides, it is easiest if the polygon shape is what?

regular

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication The lap seam to join the body to the flashing plate should be added to the net pattern of: 1. body 2. flashing plate 3. both the body and the flashing 4. either the body or the flashing

4. either the body or the flashing

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication Brake the lap seam at 90* on all sides of a polygon roof jack on a slope. TRUE or FALSE

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication The radius of the conical cap is taken from _______

the slope on the elevation view.

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication Caps for polygons are shaped like ___________

pyramids

BASIC 1ST INTRO TO FABRICATION AND WELDING Roof Jacket Fabrication Rectangular caps should come to a single point. TRUE or FALSE

FALSE

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What is the best method of cone development?

Radial line development for right cones whenever possible. This is the most accurate method.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What method can be used from second period training to develop patterns for conical projects that are right cones?

Triangulation from plan view can be used to create cones that are not right cones.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects Why would you use the transfer angle method to develop a conical project?

Ones that have the apex a long distance away and are difficult to develop with radial line methods may be prime candidates for this method transfer of angles.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects When would you use rollation to develop a pattern?

Rollation is an excellent method to use for projects that require complicated lay out procedures and may not need to be extremely accurate

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What seam can be used to fabricate a section or join sections of a project?

The lap seam can be used both as a seam or a joint between sections

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What are 4 types of seams used to join sections of a project together?

1. Lap seam 2. peened seams 3. double peened seams 4. hammerlock seam 5. elbow seams

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What are 3 edges used on conical projects?

1. Wired edge 2. Raw edge 3. hemmed edge 4. capped edge

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects How is the curve formed on cones that are too large for the roll forming machine?

Step braking is a method used for large curves.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What is the preferred method for forming curves for conical projects?

If at all possible, the roll forming machine should be used to form the cone.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects Smaller cones are not able to be formed in the forming machine. How can the cones be formed?

A stake must be used.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects Why are there different sizes of turning rolls?

Because different diameters of wire are used for wired edges, different sizes of turning machines are used.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What should the gauge on the turning machine be set at?

The gauge on the turning machine should be set to 2 1/2 times the diameter of the wire from the centre of the top wheel to the gauge.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What should the gauge of the wiring machine be set at?

Set at a distance of 1 wire diameter plus 2 metal thicknesses from the inside of the top wheel.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects When forming a wired edge with the turning machine, the edge is flared out by tightening the crankscrew after each revolution of the project. TRU or FALSEE

FALSE The crankscrew should not have been tightened throughout this procedure.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What machine is used to finish the wired edge on a funnel?

Wiring machine

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What should be accounted for when developing the patterns for a round to round reducer?

When developing the pattern for the body, the airflow and the big/small end should be accounted for.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects The body of a pail must be made in 2 parts. TRUE or FALSE

FALSE The body of the pail can be made in 2 parts or in 1 part

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects How is the body of a roof jack often joined to a flashing?

Hammerlock seam

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What is a bail?

Is the name given to a piece of wire that is used as a handle for a sheet metal project.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects How long should the wire for a bail be cut?

Standard cut is a length of wire equal to twice the diameter of the project.

BASIC 1ST INTRO TO FABRICATION AND WELDING Conical Projects What is the simplest type of pail ear?

A hat channel that is attached to the side of the project.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering List 6 safety precautions to be practiced while soldering.

1. You should use a soldering copper that has a loose handle. Hot copper could fall off and burn you. 2. Never touch to feel if the iron is hot 3. Store iron in stove or proper rack. 4. Never stand in front of the oven when lighting. 5. Fluxes are very corrosive. Don't get in your eyes or on skin and clothing. 6. Have proper ventilation. Soldering flumes are toxic

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering List in order, the procedures you need to take if you get acid in your eyes.

1. Flood your eyes immediately for minimum of 15min 2. Hold head under tap water facet with eye open 3. DO NOT use eye cup or bandage over injured eye 4. DO NOT apply ointments, oils or salves 5. SEEK medical assistance 6. Explain cause of injury. If possible sample in container for doctor.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Explain the difference between hard soldering and soft soldering.

Hard solder requires a much higher temperature than soft soldering.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering What is the proper method for sizing soldering coppers?

Coppers are sized by weight in pairs. Example, 2lb coppers would be two 1 lb coppers.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Which file should be used when filing a soldering copperhead?

Single cut bastard or vixen files

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Why is the single cut bastard file or vixen files used for filing soldering copper heads?

Their are course cut that will not clog with soft copper filings.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Why is a copper tinned?

Coppers are tinned to give the solder a path to follow on the soldering copper head.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering What is sal-ammoniac for?

Used to tin coppers and make dipping solution for cleaning coppers.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering List the following melting points 1. 60/40 2. 50/50 3. 40/60 4. Tin 5. Lead

1. 188*C 2. 213*C 3. 235*C 4. 236*C 5. 327*C

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Why do you use flux in soldering?

1. Remove the oxide film from the metals' surfaces 2. Prevent further oxidation during the soldering operation 3. Direct the flow of solder

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering What 3 forms is solder available in?

1. Bar solder 2. Solid wire and flux core wire 3. Solid wire and flux core wire

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering List 4 corrosive fluxes

1. Muriatic acid 2. Zinc chloride acid 3. Phosphoric acid 4. Kester's special al.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering How do you prepare a soldering copper for filing and forging?

Heat the copper until it is bright red

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering How is the dipping solution made?

Made by dissolving powdered sal-ammoniac in water. If sal-ammoniac in block form is used, it must first be ground into a powder before mixing (approximately 14g(1/2oz) to 0.95L (1qt) of water)

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering What is the melting temperature of a 63/37 solder alloy?

183*C

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Why must zinc chloride be prepared in a well ventilated area?

When the zinc is dropped into the muriatic acid a chemical reaction takes place and a toxic gas called hydrogen gas is released.

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Name the 2 groups in which fluxes are classed?

1. Corrosive | 2. Non-corrosive

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering State which flux is used in soldering electrical connections?

Rosin flux

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering Why is aluminum hard solder?

The rapid formation of an aluminum oxide layer and the difficulty in removing that oxide layer are why aluminum is hard to solder

BASIC 1ST INTRO TO FABRICATION AND WELDING Soldering What is the difference between wire solder and flux core solder?

Wire solder is solid and flux core solder is made like tube with flux inside.

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Brazing sheet metal requires a filler material made from what?

Bass

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Braze welding does not involve the melting of the parent melts. TRUE or FALSE

TRUE

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What are 2 types of joints used in braze welding?

1. Butt joint | 2. Lap joint

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes Oxy/acetylene and plasma cutting do what to the material when cutting?

Rapid oxidation of the metal

BASIC 1st YEAR INTRO FABRICATION AND WELDING Welding and Cutting Processes What position should the oxygen torch valve on the handle of a combination cutting/ welding outfit should be in?

Fully open