Architecture Chapter 6 Homework Institute This Standard Now Conveyed The American

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CHAPTER 6 LINES AND LETTERING

PROBLEMS

LINE PROBLEMS

Part 1: Problems 6.1 Through 6.11

1. Using the selected engineer’s layout as a guide only, create

an original drawing following your course objectives. Make

a preliminary sketch if required by your instructor. Draw

only the object lines, centerlines, hidden lines, and phantom

lines as appropriate for each problem. Do not draw dimen-

sions. Keep in mind that the engineer’s sketches are rough

and not meant for tracing.

2. Complete the drawing using the correct line standards de–

scribed in this chapter.

3. Use an appropriately sized ASME sheet and use ASME sheet

blocks. Complete the title block.

a. The title of the drawing is given.

b. The material the part is made of is given.

c. The drawing or part number is the same as the problem

number.

d. Specify the scale and other unspecified information.

4. Reproduce your drawing for checking unless otherwise

specified by your instructor.

PROBLEM 6.1 Object lines (in.)

Part Name: Plate

Material: .25-in.-thick mild steel (MS)

3.5

9.0

4.0

5.5

8.0

3.5

6.0

6.5

7.0

2.0

3.5

5.5

1.0

1.5

5.0

2.5

2.0

PROBLEM 6.2 Straight object lines only (in.)

Part Name: Milk Stencil

Material: .015-in.-thick wax-coated cardboard. Used as a

stencil to spray paint identification on crates of milk.

(CUT OUT)

1/2

1/4

1/2

1/2 1/2

1 1/2 3/4

1/2

9 3/4

3 3/4

3/4

62º

3/4 13/4

1/2 1/2

30º

40º

1/2

1 3/4

1/2

30º

1 1/2

3/4

55º

CENTERLINE

5 3/4

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PROBLEM 6.3 Arcs, object lines, and centerlines (in.)

Part Name: Latch

Material: .25-in.-thick mild steel

8 5/8

R12

67 3/8

23 5/8

PROBLEM 6.4 Circle, object lines, and centerlines (in.)

Part Name: Stove Back

Material: .25-in.-thick mild steel

3.0

6.0

4.0

23.0

18.0

24.0

12.0

708

Ø6.0

PROBLEM 6.5 Circle and arc object lines and centerlines (in.)

Part Name: Bogie Lock

Material: .25-in.-thick mild steel

10 3/16

17 3/16

Ø5 1/2

R1 1/2

29 1/2

PROBLEM 6.6 Circle and arc object lines and centerlines

(metric)

Part Name: T-Slot Cleaner

Material: 6-mm-thick cold rolled steel (CRS)

6R13

Ø10

R14

125

PROBLEM 6.7 Circle and arc object lines and centerlines (in.)

Part Name: T-Slot Cleaner

Material: .25-in.-thick cold rolled steel

.500

.250 R.500

R.125

Ø.375

R.562

4.938

1.750

.375

1.125

PROBLEM 6.8 Arcs, circles, and centerlines (in.)

Part Name: Bracket

Material: Stainless steel

5.000

3.875

R1.125

.500

.625

2X Ø.250

.375

.750

.500

3.250

1. 6 2 5

.625

2.00

.250

1. 3 7 5

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PROBLEM 6.9 Arcs, circles, and centerlines (in.)

Part Name: Bracket

Material: Mild steel

1.375 1.375 1.375

1.50 .531

1.00

.281

3.125

4.687

2X R.781

6X Ø.218

2X Ø.531

PROBLEM 6.10 Arcs, centerlines, and hidden lines (in.)

Part Name: Pin

Material: Phosphor bronze

LETTERING PROBLEMS

Part 2: Problems 6.12 Through 6.14

Use a Gothic lettering style such as Arial, Century Gothic,

RomanS, or SansSerif unless otherwise specified by your instruc-

tor. Use text .12-in. (3-mm) high. Space lines of lettering .12 in.

apart unless otherwise specified by your instructor. Reproduce

your drawing for checking unless otherwise specified by your

instructor.

PROBLEM 6.12

The standard for lettering was established in 1935 by the Ameri-

can National Standards Institute. This standard is now conveyed

by the American Society of Mechanical Engineers Document

ASME Y14.2, Line Conventions and Lettering. Letters and num-

bers should be opaque and clearly spaced. Lettering can be verti-

cal or inclined, but only one style should be used throughout the

Ø.380

4X .090

3X Ø.420

Ø.540

Ø.550 Ø.320

Ø.385

R .020

2.120

1.900

.350

.400

3X Ø.400

R .020

PROBLEM 6.11 Multiviews (2 views), object lines, and hidden

lines (in.)

Part Name: V-block

Material: 4.00-in.-thick mild steel

2.000

.100

.375

.500

1.000

.250

45º

4.000

.250

.125

.250

2.000

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drawing. Uppercase letters are used on drawings unless lower-

case letters are required for a specific application. The lettering

style used when revising a drawing should match the original

drawing lettering style.

PROBLEM 6.13

According to ASME Y14.2, the minimum recommended lettering

height depends on the drawing-sheet size and the application on

the drawing. Typically, lettering height on engineering drawings

is .12 in. (3 mm). All dimension numerals, notes, and other let-

tered information should be the same height except for titles,

drawing numbers, section and view letters, and other captions,

which are .24 in. (6 mm) high.

PROBLEM 6.14

NOTES:

1. Unless otherwise specified, all dimensions are in

millimeters.

2. Dimensions and tolerances per ASME Y14.5-2009.

3. Remove all burrs and sharp edges.

4. All fillets and rounds r6.

5. Caseharden 62 rockwell c scale.

6. Areas where material has been removed shall have smooth

transitions and be free of scratches, grind marks, and burrs.

7. Finish black oxide.

8. Part to be clean and free of foreign debris.

MATH PROBLEMS

Part 3: Problems 6.15 Through 6.19

PROBLEM 6.15 For the illustration of the block shown:

a. Determine dimension y1.

b. Determine dimension y2.

c. Determine the overall width of 12 of the blocks laid side

to side.

d. Convert each of the four given dimensions of the block to

decimal fractions.

PROBLEM 6.16 Twenty-five pieces of metal are needed for a

job. Each piece is to be 3 3/320 in length. Disregarding the cutting loss,

what length of stock is needed?

PROBLEM 6.17 A piece of stock 25 7/80 long is to be cut into

five equal lengths. Allowing 1/160 lost per cut, what will be the length of

each of the five pieces?

PROBLEM 6.18 A drawing shows a dimension of 4.18750.

Convert this decimal fraction to a common fraction.

PROBLEM 6.19 Convert each decimal fraction to a common

fraction:

a. 2.50

b. .1250

c. 14.43750

d. 5.750

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Chapter 6

Lines and Lettering

Solutions to End-of-Chapter Problems

Line Problems

Part 1: Problems 6.1 Through 6.11

PROBLEM 6.2 Straight object lines only

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PROBLEM 6.6 Circle, arc object lines, and centerlines

PROBLEM 6.7 Circle, arc object lines, and centerlines

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PROBLEM 6.8 Arcs, circles, and centerlines

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Lettering Problems

Part 2: Problems 6.12 Through 6.14

PROBLEM 6.12

PROBLEM 6.13

PROBLEM 6.14

Math Problem Solutions

Part 3: Problems 6.15 Through 6.19

PROBLEM 6.15

PROBLEM 6.16

PROBLEM 6.17

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PROBLEM 6.18

PROBLEM 6.19

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