1. 2D or Not 2D Technical Drawing Workshop: Orthographic Views
3D objects drawn in 2D

2. Define 3-Dimensional (3D)
A 3-Dimensional object extends into more than one plane.
A 3D object has a depth (thickness).

3. Architecture & Engineering Application
Structures, machines, etc. are 3D objects
The plans (blueprints) are 2D.
How do architects and engineers communicate how to build a 3D object on a 2D drawing??

4. Different Views of 3D Objects
We can look at different views of a 3D object.
These different views can be drawn in 2D.
Example: Cylindrical Wipe Container
What is shape of SIDE or FRONT view? Hint: Think of a projection (like a shadow).

5. Different Views of 3D Objects
Example: Cylindrical Wipe Container
TOP View: Black Circle
Question: What will be the BOTTOM view?

6. Different Views of 3D Objects
Example: Cylindrical Wipe Container
BOTTOM View: White Circle

7. Different Views of 3D Objects
Example: Purple Board Box
What is shape of FRONT view?

8. Different Views of 3D Objects
Example: Purple Board Box
What is shape of RIGHT SIDE view?

9. Different Views of 3D Objects
Example: Purple Board Box
What is shape of LEFT SIDE view?

10. Different Views of 3D Objects
Example: Purple Board Box
What is shape of REAR view?

11. Different Views of 3D Objects
Example: Purple Board Box
What is shape of TOP view?

12. Different Views of 3D Objects
Example: Purple Board Box
What is shape of BOTTOM view?

13. Orthographic Views
Two-dimensional views of objects where the viewpoint of the object is looking directly at the surfaces.
(Pass out copy)
**Think of it in a clear box

14. 6 Orthographic Views 6-View Template FRONT REAR LEFT RIGHT TOP BOTTOM
(flattened box)
FRONT
REAR
LEFT
RIGHT
TOP
BOTTOM

15. 6 Orthographic Views 6-View Template FRONT REAR LEFT RIGHT TOP BOTTOM
(flattened box)
FRONT
REAR
LEFT
RIGHT
TOP
BOTTOM
NOTE: Show a “HIDDEN” line as a dashed line.
LEGO L Shape in Clear Box

16. 6 Orthographic Views

17. 6 Orthographic Views Let’s try it on our own….. FRONT REAR LEFT RIGHT
TOP
BOTTOM
NOTE: Show a “HIDDEN” line as a dashed line.

18. 6 Orthographic Views

19. Real Life Application
Let's draw the shapes of all 6 Orthographic Views of the house below (the side with the door is the FRONT). You can assume there are no windows on the other two sides of the house.
Let's check for understanding....
To make the drawing the right size, we can consider each 2x2 LEGO brick to be 3 squares wide and 2 squares tall (square = square on 5x5 graph paper)
FRONT

20. Real Life Application Let's check for understanding....
To make the drawing the right size, we can consider each 2x2 LEGO brick to be 3 squares wide and 2 squares tall (square = square on 5x5 graph paper)