Final

Question 1

What is parallel line development

Answer 1

Process of developing patterns for objects with a constant cross section

Question 2

How many views do you need to perform parallel line development

Answer 2

2

Question 3

What does an elevation view represent

Answer 3

Represents what the object would look like if you were looking at it from the side

Question 4

What does the plan view represent

Answer 4

Represents what the object would look like if you were looking at it from above or below

Question 5

What are element lines

Answer 5

Foundation of parallel line development, drawn on the surface of the object in the elevation view at their true length

Question 6

What are projection lines

Answer 6

Projection lines are used to project an element point from one view to another, or from a view to a pattern

Question 7

What weight are projection lines drawn in

Answer 7

Construction

Question 8

What is a Half plan view

Answer 8

A shortcut when developing patterns

Question 9

What is the miter

Answer 9

Line when two gores meet

Question 10

Define stretch out

Answer 10

Length of pattern

Question 11

Define true length lines

Answer 11

True length of the element lines

Question 12

Define step off distance

Answer 12

A distance on the stretch out line representing the distance between element pints

Question 13

Define primes

Answer 13

Names used to identify extra element points related to another point

Question 14

Define net pattern

Answer 14

Pattern without any allowances

Question 15

Define gross pattern

Answer 15

Net pattern with allowances

Question 16

What is the formula for stretch out

Answer 16

3.14 x diameter

Question 17

On a square pattern what are brake lines also known as

Answer 17

Element lines

Question 18

When labeling element points where do you start and which way do you go around

Answer 18

At the seam and clockwise

Question 19

When are round elbows used

Answer 19

When round pipes must change direction either horizontally or vertically

Question 20

When are round offsets used

Answer 20

When round pipe has to bypass a permanent obstruction either horizontally or vertically

Question 21

How many pieces is a residential adjustable 90 made out of and what gauges

Answer 21

4 pieces
28g or 30g

Question 22

How many pieces are commercial adjustable elbows made out of and what gauge

Answer 22

5 or 7 pieces
26-22g

Question 23

What gauge are lap and spot welded elbows made of

Answer 23

26-18

Question 24

Round elbows with larger diameters need to be developed and assembled in ———— or ——— to achieve the desired angle

Answer 24

Sections or pieces

Question 25

What’s the minimum gauge for a butt welded elbow, what are the benefits, and what’s another name for them

Answer 25

18 gauge Provide a smooth surface, and airtight seams Breaching elbows when venting boilers

Question 26

Which elbows are primarily used in high velocity systems

Answer 26

22ga Beta elbows

Question 27

Which elbows are used in material handeling

Answer 27

Lap and spot Butt welded Formed elbows

Question 28

List three different styles of round offsets

Answer 28

3 piece and 5 piece

Question 29

What should minimum length an offset should be

Answer 29

Twice the amount of the offset

Question 30

What is the formula for miter angle

Answer 30

Degree of elbow 2x number of pieces -2

Question 31

What is the most accurate method to establish the miter line on a round elbow, and what is another method

Answer 31

Bisect an angle Protractor

Question 32

How many parts is the planview and stretch out divided into

Answer 32

12 equal spaces

Question 33

What are the four methods used to establish the miter line for a round offset

Answer 33

Given throat length Given centreline length Given heel length Bisecting centreline

Question 34

True or false All element lines must be parallel to the sides of the offset

Answer 34

True

Question 35

An adjustable elbow can be twisted to form any angle from what degrees

Answer 35

0-90

Question 36

The development of a round offset is similar to what fitting

Answer 36

3 piece elbow

Question 37

When the throat height is given when creating the mitre line for a round offset the arc will be drawn from where

Answer 37

The throat

Question 38

What is the allowance for an elbow seem

Answer 38

1/8th

Question 39

What is the small end allowance

Answer 39

7x the material thickness

Question 40

What is the allowance for a grooved seam

Answer 40

3X the grooved seam

Question 41

Where are tees used

Answer 41

Most used on venting and air distribution systems

Question 42

How would you describe a tee with a 6” main branch size and a 4” stub

Answer 42

4 on 6 tee

Question 43

True or false The process for devolping on center tees is the same for off center tees

Answer 43

True

Question 44

When laying out a tee fitting you start by drawing what view

Answer 44

Side elevation

Question 45

Corresponding element lines from the end view and side elevation create

Answer 45

The mitre line

Question 46

If the stub has the same diameter as the pipe, the stepped off distances for the hole patter will be ————

Answer 46

Equal

Question 47

When laying out a hole pattern, element lines must be extended from what view

Answer 47

Elevation

Question 48

When laying out just the stub pattern, the end view and plan viewis all that is required T or F

Answer 48

True

Question 49

What is the formula for a rectangular stub

Answer 49

2L+2W

Question 50

When laying out a y stub pattern it is necessary to have which views

Answer 50

Both side and end views

Question 51

There will be a hidden line in the side elevation view of an on center pipe y T or F

Answer 51

True

Question 52

Y pipes are always laid out at 45 T or F

Answer 52

True

Question 53

Hole pattern spacing around the main cylinder is taken from what view

Answer 53

End view

Question 54

Extended element lines from what view develop the hole pattern

Answer 54

Side elevation

Question 55

What lines are the foundation of parallel line development

Answer 55

Element lines

Question 56

To properly develop a parallel line development pattern you just have the true length of the ————

Answer 56

Element line

Question 57

Primes in parallel line development are used to indentify an—————

Answer 57

Extra element point

Question 58

You can develop patterns for spherical objects with parallel line development T or F

Answer 58

True

Question 59

What is found in the plan view

Answer 59

Perimeter of the pattern

Question 60

Element line spacing on the stretch out is best developed by which method

Answer 60

Calculating and measuring