PowerPoint Presentation: Chapter 6 Orthographic Reading
PowerPoint Presentation: Definition TOPICS Orthographic Reading Missing View Problems Self Practice Problems Analysis by Solids Analysis by Surfaces
PowerPoint Presentation: Reading a drawing is the process of recognizing the shape of an object by interpreting the orthographic views. DEFINITION Orthographic Writing Orthographic Reading
PowerPoint Presentation: F.V. R.S.V T.V. L.S.V B.V. VIEWING DIRECTION Given
PowerPoint Presentation: Analysis by Solids ORTHOGRAPHIC READING
PowerPoint Presentation: Objects are decomposed into solid geometric primitives. BASIC IDEA Rectangular prism Cylinder Negative cylinder (Hole) Some of familiar solid objects
PowerPoint Presentation: Objects are decomposed into solid geometric primitives. BASIC IDEA Cone Pyramid Sphere Some of familiar solid objects
PowerPoint Presentation: 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.
PowerPoint Presentation: EXAMPLE A Given Front View Rectangular prism Hole Composition
PowerPoint Presentation: Given Rectangular prism Composition Front View Cylinder EXAMPLE B
PowerPoint Presentation: Given Cylinder with a blind hole. Composition L-shaped with round end Hole EXAMPLE C
PowerPoint Presentation: Composition Wedge Given EXAMPLE D
PowerPoint Presentation: Composition Given EXAMPLE D L-shaped block Wedge
PowerPoint Presentation: Analysis by Surfaces ORTHOGRAPHIC READING
PowerPoint Presentation: 2. Read the individual set of lines or surface that appeared in each view and related to each other. 1. Orient yourself with the views given. An understanding in orthographic projection, i.e. meaning of lines and surfaces are almost important. READING STEPS
PowerPoint Presentation: 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. 3. Mentally create and sketch a form of the surface that produce the same orthographic views as those at the beginning. READING STEPS
PowerPoint Presentation: GUIDANCE 1 Adjacent areas that are not in the same plane must be separated by lines . Different plane Line exists Edge view Same plane Edge view
PowerPoint Presentation: Top view A B C EXAMPLE All surfaces A, B and C are not in the same plane. Some of possible objects ’ shape. A B C A B C A C B
PowerPoint Presentation: GUIDANCE 2 Areas that show a similar shape in more than one view is the same surface. Similar shape
PowerPoint Presentation: GUIDANCE 2 Areas that show a similar shape in more than one view is the same surface.
PowerPoint Presentation: Similar shape Similar shape EXAMPLE A
PowerPoint Presentation: EXAMPLE A
PowerPoint Presentation: EXAMPLE A
PowerPoint Presentation: EXAMPLE B
PowerPoint Presentation: EXAMPLE B
PowerPoint Presentation: EXAMPLE B
PowerPoint Presentation: EXAMPLE B
PowerPoint Presentation: EXAMPLE B
PowerPoint Presentation: Missing View Problems
PowerPoint Presentation: Previous example Given EXAMPLE A
PowerPoint Presentation: Given EXAMPLE A Possible No Select this line
PowerPoint Presentation: Given EXAMPLE A Possible Select this line
PowerPoint Presentation: Given EXAMPLE A Possible Select this line
PowerPoint Presentation: Given EXAMPLE A Back Floor
PowerPoint Presentation: Given EXAMPLE A Possible
PowerPoint Presentation: Given EXAMPLE A Possible Select this type
PowerPoint Presentation: EXAMPLE B
PowerPoint Presentation: EXAMPLE B floor back
PowerPoint Presentation: EXAMPLE C ? This area was hidden by yellow object This line is green surface. This line is pink surface.
PowerPoint Presentation: EXAMPLE C
PowerPoint Presentation: SELF PEACTICE