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Chapter 6 Orthographic Reading

Chapter 6 Orthographic Reading. Definition. Orthographic Reading. Analysis by Solids. Analysis by Surfaces. Missing View Problems. Self Practice Problems. TOPICS. DEFINITION.

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Chapter 6 Orthographic Reading

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  1. Chapter 6 Orthographic Reading

  2. Definition Orthographic Reading Analysis by Solids Analysis by Surfaces Missing View Problems Self Practice Problems TOPICS

  3. DEFINITION Reading a drawing is the process of recognizing the shape of an object by interpreting the orthographic views. Orthographic Writing Orthographic Reading

  4. T.V. F.V. L.S.V R.S.V B.V. VIEWING DIRECTION Given

  5. ORTHOGRAPHIC READING Analysis by Solids

  6. Rectangular prism Cylinder Negative cylinder (Hole) BASIC IDEA Objects are decomposed into solid geometricprimitives. Some of familiar solid objects

  7. Cone Pyramid Sphere BASIC IDEA Objects are decomposed into solid geometricprimitives. Some of familiar solid objects

  8. READING STEPS 1. Orient yourself with the views given. (Choose the viewing direction.) 2. Read the individual surfaces that appeared in each view and related to each other. 3. Create a proper solid geometric primitive from each reading. 4. Assembly all of solid geometric primitive according to orthographic views.

  9. Rectangular prism Given Hole Front View EXAMPLE A Composition

  10. Rectangular prism Given Cylinder Front View EXAMPLE B Composition

  11. Cylinder with a blindhole. L-shaped with roundend Hole EXAMPLE C Composition Given

  12. Given Wedge EXAMPLE D Composition

  13. Given L-shaped block Wedge EXAMPLE D Composition

  14. ORTHOGRAPHIC READING Analysis by Surfaces

  15. READING STEPS 1. Orient yourself with the views given. 2. Read the individual set of lines or surface that appeared in each view and related to each other. An understanding in orthographic projection, i.e. meaning of lines and surfaces are almost important.

  16. READING STEPS 3. Mentally create and sketch a form of the surface that produce the same orthographic views as those at the beginning. 4. Repeat steps 2 and 3 until all surfaces are read. During this repeating process, the details of an object are added up until its completed shape is obtained.

  17. Adjacent areas that are not in the same plane must be separated by lines. GUIDANCE 1 Different plane Same plane Line exists Edge view Edge view

  18. Top view B A C A A A B B B C C C EXAMPLE All surfaces A, B andC are not in the same plane. Some of possible objects’ shape.

  19. Areas that show a similar shape in more than one view is the same surface. Similar shape GUIDANCE 2

  20. Areas that show a similar shape in more than one view is the same surface. GUIDANCE 2

  21. Similar shape Similar shape EXAMPLE A

  22. EXAMPLE A

  23. EXAMPLE A

  24. EXAMPLE B

  25. EXAMPLE B

  26. EXAMPLE B

  27. EXAMPLE B

  28. EXAMPLE B

  29. Missing View Problems

  30. Given EXAMPLE A Previous example

  31. Given EXAMPLE A Possible No Select this line

  32. Given EXAMPLE A Possible Select this line

  33. Given EXAMPLE A Possible Select this line

  34. Given EXAMPLE A Back Floor

  35. Given EXAMPLE A Possible

  36. Given EXAMPLE A Possible Select this type

  37. EXAMPLE B

  38. EXAMPLE B back floor

  39. EXAMPLE C This area was hidden by yellow object This line is green surface. ? This line is pink surface.

  40. EXAMPLE C

  41. SELF PEACTICE

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