1. Orthographic Projection
“COPY”
Orthographic Projection

2. Representational drawing and sketching:
Is concerned with "drawing what you see," or "drawing that which you imagine as if you actually saw it."
*(Sketch of garden shed)
“COPY”

3. Technical drawing: “COPY”
Is concerned with representing objects according to drawings that allow for:
Size, proportions, and structure - as well as appearance - to be shown.
The most basic concept involved is the geometry of "projection."
“COPY”

4. An orthographic projection drawing - since it is a "flattened single view" of a (3-D) 3 dimensional object - is an "exactly sized" representation of the real object on a 2 dimensional surface (paper) AS SEEN IN THAT VIEW.

5. ** Name these views: (6)

6. *This process is called orthographic ("true drawing") projection.
“COPY”

7. *It also works in reverse: “Don’t copy”
a) If you correctly draw the individual views
b) Fold them all up into a box with 90 degree corners
c) Then project the corners of each drawing into the middle of the box the intersections of those lines will define the 3 dimensional object.

8. Proper Blocking Format
“Copy”
Proper Blocking Format
Isometric Drawings
Orthographic Projections
Top View
Line of Deflection
Side View
Front View

9. Garden Sheds On a full size piece of white paper
Reproduce a 3D Isometric Drawing
Extract as much detail as possible
Landscape included
Draw the 3 OP’s

10. OP
Use the 3D isometric object to produce the 3 OPs (top, front, side)
Use the grid system to keep all sizes and proportions correct.