Lesson slides on Development on Critical Dimensions

1. Development
Critical Dimensions

2. Development Process
Critical dimensions

3. Critical Dimensions
What is it?
 It is essentially finding out all important and relevant
dimensions that are associated to the product that you are
making
 It is also used to derive the dimensions of the product

4. Example 1:
 A product designer wants to design and make a phone holder to be used in the car
when the person is driving.
 What are the critical dimensions that he needs to find?
Length of phone
Breadth of phone
Thickness of phone

5. Example 2:
 A Furniture designer wants to make a shoe rack for a family of three.
 What are the critical dimensions that he needs to find?
Length of shoe
Height of shoe
Width of shoe

6. Example 2:
After finding critical dimensions, what next?
 Derive the overall dimensions of the product
Length of shoe rack = 3 times the width of the 2 shoes
Breadth of shoe rack = length of 1 shoe
Height of shoe rack = height of 1 shoe

7. Example 3:
 A designer wants a product that can store water of around 1 litre to water the
plants.
 What are the critical dimensions needed to derive the overall dimensions of the
product?
Solution:
1 litre = 1000cm3
Therefore, the volume needed to store the water has to be 1000cm3.
This means that the length x breadth x height = 1000cm3
A possible set of dimensions could be:
10 cm 10 cm
10 cm

8. Conclusion
 Need to know what are the main functions of the product and get the dimensions
of the required things associated with the product
 Sometimes, quantity plays a part in deriving the overall dimensions of product (eg.
The number of shoes define the size of the product)
 Sometimes, other forms of measurable data is needed to determine the
dimensions of product (eg. The volume of water needed determines the size of the
product)
 REMEMBER, all the dimensions of your product need to be derived!