Blueprint

Question 1

What type of estimating for large jobs usually begins 3 to 4 years in advance of the actual start of the project?

Answer 1

Rough Order of Magnitude (ROM) estimating

Question 2

What must be completed after the ROM estimate is entered?

Answer 2

Risk assessment factors

Question 3

What are 2 basic techniques for putting an estimate together?

Answer 3

Top down estimate & bottom up estimate

Question 4

When pricing out a job, what are 2 categories of pricing?

Answer 4

Preliminary Estimates & detailed estimates

Question 5

What are 3 requirements to include in a detailed estimate?

Answer 5

A task list, material take-off, & pricing sheets for each task item plus labour

Question 6

Is it common practice to submit an un-priced copy of your bid proposal and your proposal letter to the general contractor 3 to 4 days before the bid closing date?

Answer 6

Yes

Question 7

What is the most reliable or best type of estimate?

Answer 7

Detailed estimate

Question 8

When you are calculating a job and you wish to make a 10 percent profit, do you add 10 percent to the selling price?

Answer 8

No

Question 9

What does a title block contain?

Answer 9

Scale, project address, & sheet identification number

Question 10

What would the sheet identification number A-6 on the bottom right of a blueprint mean?

Answer 10

The 6th page of architectural drawings

Question 11

What height are floor plans in a kitchen drawn at?

Answer 11

4 feet

Question 12

Information on the furnace location would be found on what part of a blueprint?

Answer 12

The foundation plan

Question 13

If there is a discrepancy between the blueprint and what is on the specifications which one should you go by?

Answer 13

The specifications

Question 14

What is the key to an accurate material list?

Answer 14

Organization

Question 15

What are 2 things that must be completed before you can create a material list?

Answer 15

Heat loss calculation & duct design

Question 16

What are 5 ways that air can be conditioned?

Answer 16

Heating, cooling, filtering, humidifying, & de-humidifying

Question 17

How often should round supply duct be supported?

Answer 17

Every 5 inches

Question 18

What are 2 reasons for using a return air rail?

Answer 18

Provides backing for return air grilles & ensures that the dry wallers cut out the hole

Question 19

What type of vent do low & mid efficient furnaces use to remove the products of combustion?

Answer 19

B-vents

Question 20

What type of vent do high efficient furnaces use to remove the products of combustion?

Answer 20

Special plastic venting

Question 21

Why must an insulated duct be specified for the entire length of a fresh air duct?

Answer 21

Because condensation will form on the duct otherwise

Question 22

What is the most efficient type of duct?

Answer 22

Round

Question 23

What is the combustion air termination used for?

Answer 23

To keep cold air from dropping into the furnace room

Question 24

Installations requiring you to run forced air heating under concrete slab are known as what?

Answer 24

Underslab heating

Question 25

What is combustion air?

Answer 25

The air that furnaces require to fuel the fire inside of them

Question 26

An entire underslab ducting system must slop what way back to the furnace?

Answer 26

It must slope back to the furnace

Question 27

When a return air branch run is finished on the bottom with a dry wall ceiling, what is the bottom of the branch run finished with?

Answer 27

Light gauge metal

Question 28

What is the uncontrolled leakage of air from a building called?

Answer 28

Exfiltration

Question 29

What type of ductwork should be coming off the plenum for underground heating installations?

Answer 29

Round

Question 30

What is the heart of a HVAC system?

Answer 30

The air re-circulation fan

Question 31

What should the ratio between the width and the depth of duct never exceed?

Answer 31

4:1

Question 32

Dynamic losses on flexible duct are how many times as great per foot as in smooth duct?

Answer 32

10 times greater

Question 33

What piece of equipment is used to change fuel into heat energy?

Answer 33

A furnace

Question 34

Where are perimeter loop systems mostly found?

Answer 34

In underslab heating situations

Question 35

What is the most common distribution system that is used today?

Answer 35

An extended plenum system

Question 36

What is the heating value of natural gas?

Answer 36

1000 Btu/ft3

Question 37

What is the heating value of propane?

Answer 37

2500 Btu/ft3

Question 38

What is the burner of choice for high rates of combustion in an oil furnace?

Answer 38

Atomizing burner

Question 39

What is the minimum efficiency of a gas furnace allowed to be manufactured and sold in Canada?

Answer 39

78 percent

Question 40

What are high efficiency gas furnaces also known as?

Answer 40

Condensing furnaces

Question 41

What are 3 types of gas fire places?

Answer 41

Free standing, zero clearance, and insert fireplace

Question 42

The safety of workers and job sites is governed by which code?

Answer 42

OH&S

Question 43

The installation of gas appliances & piping is governed by which code?

Answer 43

B149.1-05 CAN/CSA

Question 44

Which agency conducts tests and certifies products used by consumers?

Answer 44

CSA & ULC

Question 45

Which agency conducts tests & writes standards specifically for the HVAC industry?

Answer 45

SMACNA

Question 46

Which agency conducts tests & writes standards related to fire protection?

Answer 46

NFPA

Question 47

What is the stage of the job called where the penetrations to the exterior are installed?

Answer 47

The rough-in stage

Question 48

What is the stage of the job called where the furnace is placed in a permanent position?

Answer 48

The ductwork stage

Question 49

What is the stage of the job called where the thermostat is mounted permanently?

Answer 49

The final stage

Question 50

Underslab heating systems grade which way from the furnace?

Answer 50

Towards the furnace

Question 51

Whose responsibility is it to ensure the job is done properly and to the applicable code?

Answer 51

The installer

Question 52

B-vent requires how much clearance to combustible materials?

Answer 52

1 inch

Question 53

A single wall vent connector on a wood burning application requires how much clearance to combustibles?

Answer 53

18 inches

Question 54

How much clearance do you need between an exhaust hood and the regulator vent on a natural gas or propane line coming into a building?

Answer 54

3 feet

Question 55

How much clearance do you need between a mechanical fresh air intake hood and the regulator vent on a natural gas or propane line coming into a building?

Answer 55

10 feet

Question 56

What is the distance required between a fresh air connection to the furnace and the furnance fan inlet if the air is not connected through an approved mixing device?

Answer 56

10 feet