Print reading for

drafting & engineering drawing

Paul Ross Wallach82071

PRINT READING FOR DRAFTING & ENGINEERING DRAWING

Table of Contents

INTRODUCTION 1

BASIC DRAFTING CONCEPTSExercise 1: Identify the drawing type 3Exercise 2: Identify the drawing type 4Exercise 3: Identify the drawing type 5Exercise 4: Identify the drawing type 6Exercise 5: Identify the drawing type 7Exercise 6: Identify the drawing type 8Exercise 7: Identify the drawing type 9Exercise 8: Identify the drawing type 9Exercise 9: Identify the drawing type 11Exercise 10: Identify the drawing type 11Exercise 11: Sectional drawings 12Exercise 12: Geometric terms 14Exercise 13: Two-dimensional geometric

forms 16

Exercise 14: Solid geometric forms 18

DRAFTING CONTROL SYSTEMSExercise 15: Line conventions 20Exercise 16: Line conventions 21Exercise 17: Line convenions 22Exercise 18: Line convenions 23Exercise 19: Dimensioning conventions 24Exercise 20: Dimensioning conventions 25Exercise 21: Dimensioning conventions 25Exercise 22: Dimensioning conventions 26Exercise 23: Dimensioning conventions 26Exercise 24: Dimensioning conventions 27Exercise 25: Dimensioning symbols 28Exercise 26: Dimensioning symbols 29Exercise 27: Tolerances 30Exercise 28. Tolerances 32Exercise 29: Tolerance symbols 34Exercise 30: Geometric tolerancing and

dimensioning symbols – 135

Exercise 31: Geometric tolerancing and dimensioning symbols – 2

37

Exercise 32: Positional tolerancing 38Exercise 33: Surface finishes 40

Exercise 34: Surface control finish symbol 41Exercise 35: Surface control 42

ENGINEERING DRAWING CONCEPTSExercise 36: Planes of projection 44Exercise 37: Descriptive geometry 45Exercise 38: Cartesian coordinate system 46Exercise 39: Thread notes 48Exercise 40: Welding symbols 49Exercise 41: Welding symbols 50Exercise 42: Welding symbols 51Exercise 43: Welding notation 52Exercise 44: Welding notation 53Exercise 45: Gears 54Exercise 46: Gear terminology 55Exercise 47: Plumbing fittings 56

WORKING DRAWINGSExercise 48: Threaded fasteners 57Exercise 49: Cover plate 58Exercise 50: Sealed tubing 60Exercise 51: Sealed cylinder 62Exercise 52: Wheel arbor 64Exercise 53: Arbor spindle 66Exercise 54: Ballpeen hammer 68Exercise 55: Scribe handle 69Exercise 56: Depth gauge 70Exercise 57: Tool vise 72Exercise 58: Hand tap vise 74Exercise 59: Colleted scribe holder 76Exercise 60: C-clamp 78Exercise 61: Gear puller 80Exercise 62: Socket drive handle 82

Select the correct technical term for this drawing.1. auxiliarydrawing2.cabinetdrawing3. cavalierdrawing4.development(pattern)drawing5.diametricdrawing6. isometricdrawing7. isometricsectionaldrawing8.multiview(orthographic)drawing9.perspectivedrawing

10.sectionalcallout

ANSWER:

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Exercise

1IdentIfy the dRaWIng tyPe

Exercise

12 geometRIc teRms

14

15

Exercise

12geometRIc teRms

1. acuteangle

2. angleangle

3. arc

4. center

5. chord

6. circumscribedcircle

7. complementaryangles

8. concentriccircles

9. diameter

10.eccentriccircles

11. equilateraltriangle

12. freecurve

13. inscribedcircle

14. intersectinglines

15. isoscelestriangle

16. obtuseangle

17. parallellines

18. quadrant

19. radius

20. rightangle

21. righttriangle

22. scalenetriangle

23. secant

24. sector

25. segment

26. supplementaryangles

27. tangentline

Identify the geometric terms shown on page 14.

24

Exercise

19 dImensIonIng conventIons

1. architecturaldimension

2. arrowhead

3. dimensionline

4. dualdimensionmm/in.

5. decimaldimension

6. extensionline

7. inch/fractiondimension

8. limitdimension

9. metricdimension

10. numericaldimension

Identify the parts of the dimensions.

8'- 6"

�7

Exercise

31

1. all-aroundprofile

2. angularity

3. atleastmaterialcondition

4. atmaximummaterialcondition

5. circularity

6. circularrunout

7. concentricityorcoaxiality

8. cylindricity

9. diameter

10. flatness

11. parallelism

12. perpendicularity

13. position

14. profileofaline

15. profileofasurface

16. projectedtolerancezone

17. regardlessoffeaturesize

18. straightness

19. totalrunout

Match the symbol to its name.

geometRIc toleRancIng and dImensIonIng symbols – Part 2 (ASME Y14.5)

42

Exercise

35 suRface contRol

1. What is the lay’s directional surface pattern on the angular surface?A. parallelB. straightC. angularD. perpendicular

ANSWER:

2. What is the height of the surface roughness width on the angular surface?A. .05micrometersB. .08micrometersC. 1.6micrometersD. .80micrometersE. 3.2micrometers

ANSWER:

3. What is the waviness height of the angular surface?A. .05micrometersB. .08micrometersC. 1.6micrometersD. .80micrometersE. 3.2micrometers

ANSWER:

4. What is the height of the surface roughness for the inside of the hole’s surface?A. .05micrometersB. .08micrometersC. 1.6micrometersD. .80micrometersE. 3.2micrometers

ANSWER:

5. What is the height of the surface roughness for the top surface of the wedge block?A. .05micrometersB. .08micrometersC. 1.6micrometersD. .80micrometersE. 3.2micrometers

ANSWER:

Answer these questions about the drawing on page 42.

Exercise

35suRface contRol

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Exercise

39 thRead notes

1. What is the “2A” in the bolt’s thread note? A. AmericanStandardExternalThreads B. ASMEstandardthreads C. class2fit,externalthread D. twothreadsperinch

ANSWER:

2. What is the “2B” in the nut’s thread note? A. class2fit,internalthread B. AmericanStandardInternalThreads C. ASMEstandardthreads D. twothreadsperinch

ANSWER:

3. What does the “13” in the thread note represent? A. typeofthreads B. threadsperinch C. lengthofbolt D. lengthofnut E. threadspermillimeter

ANSWER:

4. What does the “1/2” in the thread note represent? A. crestofthreadsininches B. lengthofthreadsininches C. depthofthreadsininches D. majordiameterofthreads E. depthofthreadsinmillimeters

ANSWER:

5. What is the bolt type? A. squarebolt B. hexbolt C. ASMEbolt D. metricbolt

ANSWER:

6. What is the nut type? A. squarenut B. hexnut C. ASMEnut D. metricnut

ANSWER:

Select the correct answers from the standard nut and bolt thread notes.

48

Exercise

40WeldIng symbols

1. back(orbacking)weld

2. bevelgrooveweld

3. filletweld

4. J-grooveweld

5. plugweld

6. squaregrooveweld

7. U-grooveweld

8. V-grooveweld

Identify the welding symbols.

49

1. What is the concave radius in the swivel top (2)?

1/8" 1/4" 11/16" 3/4"

ANSWER:

2. What is the length of the knurling on the handle (1)?

5/16" 21/2" 21/8" 13/8"

ANSWER:

A.B.C.D.

A.B.C.D.

3. How is the swivel top (2) attached to the handle (1)?

threadedpeenedsolderedwelded

ANSWER:

4. What do the letters F. A. O. mean?

FinishedAllOverFaceAllowanceOffsetFilletAssembledand

OiledFlangeAlloyOriented

ANSWER:

A.B.C.D.

A.B.C.

D.

5. What is the diameter of the hole through the swivel top (2)?

.09"1/8"3/16"5/8"

ANSWER:

6. What is the spherical radius of the clamping head (3)?

16"1/4"3/16"1/2"

ANSWER:

A.B.C.D.

A.B.C.D.

Answer these questions about the drawing above.

Exercise

55scRIbe handle

69