1. The technological world
specifications

2. Specifications
Requirements and needs (technical, financial and other obligation) necessary for the project to be carried out.

3. Constraints The physical constraints The technical constraints
The economic constraints
The industrial constraints
The human constraints
The environmental constraints

4. The physical constraints
Concerns all the natural elements ( air, water, dirt, etc)
Example :
Exposed to rain = rust
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5. The technical constraints
Factors that affect the operation of the object
Example :
Maximum speed of the bicycle
How long the batterie last

6. The economic constraints
All cost the designer has to take into account ( production cost, selling price and maintenance costs)
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7. The industrial constraints
Everything about industry :
Where is it manufactured
The production facilities
The tools
The work force
The completion deadline
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8. The human constraints
The people who will use it, maintain and repair the product.
Example :
The object is liked, easy to maintain.
Aesthetics, safety and comfort

9. The environmental constraints
Concerns the effects on the environment.
Example :
Less pollution
Recyclable
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10. Exercices The object must have neutral colours
Human
The object must have neutral colours
Industrial
The object must be made entirely in the Norbert workshop
Physical
The object must be waster-resistant up to 30 m
Technical
The object must use batteries that are widely available
Economic
Replacement batteries for the object must be inexpensive
Environmental
The object must contain glass and recycled fibers

11. Exercices
Human / Technical
The stapler must be strong, durable and able to staple at least 30 pages together
Human
It must be a bright colour so it can be spotted easily in a drawer
Environmental
It must be completely recyclable
Technical
Its staple-feeder must be able to hold at least 100 staples
Economic
It must cost less than $3 to make