120102a Drawing Interpretation

Question 1

Use Figure 20 to identify information found on the drawing.

1. What is the total length of chain used?
2. What colour is the bin to be painted?
3. What scale is used in drawing this print?
4. How are the bins to be assembled?
5. How many scrap bins are to be built?
6. How many bridle chain hitches are required?
7. What are the specifications of the centre ring?

Answer 1

1. 9’0”
2. Pittsburgh Eye-Rest Green
3. It is not drawn to any scale (NTS).
4. The bins are all welded construction.
5. 10
6. 1
7. 4” inside diameter ring; 5/8” diameter alloy steel rod

Question 2

Use Figure 33 to answer the questions.

1. What type of line is line Y?
   a) ghost line, b) phantom line, c) kick line, d) extension line
2. Which line is a hidden line?
   a) line T, b) line X, c) line W, d) line Z
3. Which line is a viewing plane line?
   a) line T, b) line V, c) line W, d) line X
4. Select a dimension line.
   a) line P, b) line R, c) line S, d) line V
5. Select a section line.
   a) line P, b) line U, c) line W, d) line Y
6. Which line is a cutting plane line?
7. Which line is an object line?
8. Which line is a break line?
9. Which line is a centre line?
10. Which line is an extension line?

Answer 2

1. b) phantom line
2. d) line Z
3. d) line X
4. b) line R
5. b) line U
6. line T
7. line P
8. line W
9. line Q
10. line S

Question 3

The type of line used to show an alternate position of an object is a:
a) phantom line.
b) hidden line.
c) section line.
d) leader line.

Answer 3

a) phantom line.

Question 4

A break line is used to:
a) show where a piece is to be cut.
b) show where pieces are to be welded.
c) conserve space on the drawing.
d) show the location of a surface area.

Answer 4

c) conserve space on the drawing.

Question 5

Two line types that are usually used together are:
a) leader lines and object lines.
b) visible lines and object lines.
c) leader lines and section lines.
d) dimension lines and extension lines.

Answer 5

d) dimension lines and extension lines.

Question 6

A line that may be used for dimensioning or adding a note is a/an:
a) extension line.
b) section line.
c) break line.
d) leader line.

Answer 6

d) leader line.

Question 7

Lines used on a drawing to show the shape or outline of an object are called:
a) object and hidden lines.
b) object and dimension lines.
c) visible and viewing plane lines.
d) viewing plane and hidden lines.

Answer 7

a) object and hidden lines.

Question 8

A cut surface is highlighted by using:
a) a cutting plane line.
b) leader lines.
c) break lines.
d) section lines.

Answer 8

d) section lines.

Question 9

A cutting plane line is used to identify a:
a) developed view.
b) revolved section.
c) sloped surface.
d) section view.

Answer 9

d) section view.

Question 10

Who is responsible for preparing a set of plans for a welded structure?
a) the customer
b) the employer
c) the engineer
d) the draftsman

Answer 10

c) the engineer

Question 11

What is the main purpose of a drawing or blueprint?
a) to keep the engineer’s designs in the office
b) to ensure the engineer is present during fabrication
c) to provide communication to the draftsman
d) to provide communication to the shop fabricator

Answer 11

d) to provide communication to the shop fabricator

Question 12

Which working drawing would provide you with information on the size of
C shape used in the construction of a building’s roof?
a) architectural drawing
b) structural drawing
c) mechanical drawing
d) electrical drawing

Answer 12

b) structural drawing

Question 13

Which term describes a set of written instructions that are necessary to
complete a particular job?
a) specifications
b) weldments
c) draftsmen
d) blueprints

Answer 13

a) specifications

Question 14

Leader lines are used to:
a) save space on a drawing.
b) point directly to a surface.
c) show an alternate position of a part.
d) show the visible shape of an object.

Answer 14

b) point directly to a surface.

Question 15

An object line is a line that:
a) shows edges and outlines not visible to the eye.
b) shows the visible shape of a part.
c) has an arrow on one end and points to a surface.
d) locates the centre of holes or slots.

Answer 15

b) shows the visible shape of a part.

Question 16

A broken line of medium thickness (example————–) is called a:
a) hidden line.
b) centreline.
c) phantom line.
d) extension line.

Answer 16

a) hidden line.

Question 17

Which statement describes a centreline?
a) fine, straight line with an arrowhead at one end, usually drawn at an
angle
b) series of fine lines, solid or solid and broken, arranged in a specific
pattern
c) fine, broken line made up of a series of short and long dashes
alternately spaced
d) thick, broken line made up of a series of short and long dashes
alternately spaced

Answer 17

c) fine, broken line made up of a series of short and long dashes
alternately spaced

Question 18

Which statement best describes extension lines?
a) light, broken lines used to show hidden parts
b) heavy, broken lines used to show hidden parts
c) heavy, continuous line used to outline an object
d) fine lines used to show size and location dimensions

Answer 18

d) fine lines used to show size and location dimensions

Question 19

Where is the title block located on a drawing or blueprint?
a) top left corner
b) top right corner
c) bottom right corner
d) bottom left corner

Answer 19

c) bottom right corner

Question 20

Where is the scale shown on a drawing or blueprint?
a) in the bill of materials
b) in the title block
c) with the detail view
d) just left of the title block

Answer 20

b) in the title block

Question 21

A dimension marked in red or yellow on a blueprint indicates:
a) the measurement is made after welding.
b) an error has been found on the print.
c) the dimension is very important.
d) no shrinkage tolerance is allowed.

Answer 21

b) an error has been found on the print.

Question 22

What is used when the scale on a drawing is too small to clearly show all the
information of a complicated part?
a) a detailed drawing
b) a full section view
c) an auxiliary view
d) a revolved section view

Answer 22

a) a detailed drawing

Question 23

What do the arrows indicate when using a cutting plane line to show a full
section view?
a) the direction of travel
b) the direction the part is revolved
c) the direction of offset
d) the direction of sight

Answer 23

d) the direction of sight

Question 24

In which view is a portion of the object rotated in order to obtain a straight
axis and make the drawing easier to read?
a) auxiliary view
b) developed view
c) revolved view
d) untrue projection

Answer 24

c) revolved view

Question 25

Briefly explain why millimetres are the only unit used for dimensioning metric drawings.

Answer 25

Work can be done with reasonable accuracy and without confusion or errors.

Question 26

A precision dimension is usually expressed in:
a) fractions.
b) decimals.
c) feet and inches.
d) metres and millimetres.

Answer 26

b) decimals.