1. Tutorial 7 Human Factor in Design
Subject: GE Introduction to Engineering Design
Instructor: Dr. Raja Rizwan Hussain
College of Engineering
King Saud University
Tutorial 7 Human Factor in Design

2. Human Factors in Design;
Anthropometric factors
Ergonomic factors
Physiological factors
Psychological factors

3. Anthropometric factors
 Human measurements etc.

4. Ergonomic factors
Design factors intended to maximize productivity by minimizing operator fatigue and discomfort

5. Example: Chair ergonomic posture

6. Example: computer ergonomic posture

8. Physiological factors
Related with human body functions
Psycological factors
Refers to things that can influence the functions, attitude and characteristics of the human mind

9. Question 1
State and comments on human factors that you will consider in the design of vacuum cleaner

10. Human Factors will be considered :
Anthropometric Factors
Height range cm. Average 155cm
People comfort if hold the grip around the waist. Waist height +/- ½ of height = 85cm
H =85cm
The length can be adjust +/- 10cm H

11. Power Button near to the finger that grip
Ergonomic Factors
Handle Shape
Handle can be rotate
Comfort Grip
Power Button near to the finger that grip
Safety : Auto off if there are overload/overheat/short-circuit
Easy to handle
Example: Mouse pad, bicycle

12. Psychological Factors
Physiological Factors
Noise level below 50 dB
Frequency range (humans audible range of frequencies is usually said to be 20 Hz to 20 kHz) (20,000 Hz)
Psychological Factors
Good shape
When the handled is release the device will turn off automatically
Easy to move

13. Question 2
Sketch a wheel chair and comment on their designs based on the human factors consideration.

15. Question 3
Sketch a shower box and comment on their designs based on the human factors consideration.

17. Question 4
State and comments on human factors that you will consider in the design of a bicycle.