Transcript Isometric Sketching

Isometric Drawing and
Coded Plans
Prepared by:
Sheryl Sorby, Ph.D.
Amy Hamlin, Ph.D.
Norma Veurink
Funded by a grant from the National Science Foundation. Any opinions, findings, conclusions or recommendations
expressed are those of the authors and do not necessarily reflect the views of the National Science Foundation.
Isometric Sketching
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Isometric Axes
Coded Plans
Isometric Sketching
Isometric Sketching
• Used to portray a 3-D object on a 2-D
sheet of paper.
• The relationship between the 3-D axes
appears differently when projected onto
a 2-D surface, i.e., perpendicular angles
no longer appear perpendicular.
Isometric Axes
Isometric Axes
• Note that all surfaces of an object sketched in
isometric will appear distorted.
The surfaces of the cube
appear to be rhomboidal
Isometric sketches are
made as if you were looking
down a diagonal of a cube
Isometric Axes
• Isometric grid paper or dot paper is a useful tool
for constructing isometric drawings.
Coded Plans
• Pictorial sketches can be made from coded plans.
• Coded plans define the shape of a building made
of blocks.
Coded Plan
Building
Coded Plans
• Isometric sketch from corner C.
3 1
2 1
Isometric Sketching
C
Guidelines for constructing
isometric drawings:
1.Draw
C
Step 1 & 2
edge "C".
2.Sketch
Step 3
Step 4 ...
surface to the right or left
of edge “C”.
3.Draw
a surface that shares an
edge with the surface just drawn.
4.Continue
drawing one surface at
a time until the object is complete.
Step 4 ...
NOTE: Do not show the individual
blocks in the building. Just show
edges where surfaces intersect.
Demonstration
Sketch the X-corner view of the object shown below
2 3
1 1
X
In-class Exercise
Sketch the X-corner view of the two objects shown below
2 2
2 1
X
3 2 1
2 1
2
X
Complete the Computer Module on Isometric
Sketching
Isometric Drawings and Coded Plans
Homework …
• Complete the following pages in Module 3
• iso–1-5
– 8 - 11