introduction-to-egd-enggdrwing-edurok.ppsx

Engineering grafics drawing

1. Introduction to EGD
By
Fritz Rokitta
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2. 2
Table of contents
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1.What is Engineering Graphics & Design?
2.What is the difference between drafting and drawing?
3.Types of drawing boards
4.Drawing instruments (1)
5.Drawing instruments (2)
6.Drawing instruments (3)

3. 3
What is Engineering Graphics & Design (EGD)
The integration of cognitive and manipulative skills to communicate graphical
ideas. The draftsmen makes use of a combination of lines, symbols and signs
in order to produce products, processes, services and systems
which contribute towards economic growth and enhanced quality of life.
-South African Department of Education, Curriculum Statement
What is the difference between drafting and drawing in EGD?
Drawing is the design of a concept or idea without the use of drafting tools.
These are called freehand and concept drawings.
Drafting is the constructing of a concept or idea with the use of drafting tools.
These are called working and final drawings.
Pictorial drawings can be drawn with or without instruments but will show an
object in 3D from a particular point of view.
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4. 4
Correct use of a drawing board
Older type drawing board Modern type drawing board
Desktop drawing board
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Types of drawing boards

5. 5
Adjustable set square
Tri- angular scale ruler
Basic drawing set for grades 8 & 9
360° Protractor
Drawing stencil
French curve set
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Drawing instruments (1)

6. 6
Erasing plate and sand paper
Erasing plate
Drawing compass
45° Set square30° Set square
45° Set square
30° Set square
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Drawing instruments (2)

7. 7
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Clutch pencilClutch pencil lead2B Graphite pencil
Copyright © F Rokitta
Drawing instruments (3)
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Divider

8. 8
Bibliography
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Copyright © F Rokitta
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