Technical drawings are used to communicate ideas that may otherwise be difficult to convey through words alone. Pictures and drawings supplement written descriptions to effectively share concepts in engineering and design with collaborators. When creating technical drawings, the type of drawing should consider both the subject being depicted and the intended audience in order to ensure the goals and ideas are understood. Sketches, isometric drawings, and orthographic projections are common types of technical drawings that each have appropriate uses depending on the context.

1. TECHNICAL DRAWING

2. Why do we draw?
To communicate!!!

3. Why does it matter?
What’s the use of a great idea if you
cant convey it to any one else.
No one is an expert at everything,
so we must collaborate to reach a
common goal.

4. Picture is worth a 1000 words!!!
WORDS are pretty effective for some situations,
often in Engineering and design, pictures are much
more effective.
Importance of communication
What’s the worth of your ideas if you cant share
it with others?
In the real world you have to collaborate, so you
need to know how to communicate your ideas
or they are not very useful to you

5. Communication with Drawing
(things to consider)
Subject – what you are trying to convey
(Process, structure, function, material,
etc….)
Audience – who you are communicating
with
(designer, client, manager, public, other
engineers)

6. Types of Technical Drawing
Drawing types
◦ Sketches
◦ Isometric Drawings
◦ Orthographic Projections

7. When is a sketch useful?
Think about
◦ What (subject)
◦ Who (audience)

8. Sketching – look and feel

9. Sketching – to show process

10. Sketching – to explore form
Sketching
usually
associated
with look
and feel,
try and
emphasize
that other
models are
at times
effective.

11. Isometric Drawing

12. Technical Drawing – Orthographic