9.2 Physical Aspects
A knowledge of the sizes and shapes of human beings, both male and female, is essential to the designer who wishes to match equipment and environments to the human user. Adequate clearance must be provided for the tallest, the broadest, and the fattest of individuals. At the same time, the smallest person must be able to reach and operate all of the controls and be able to see all the displays. Further, many personnel also wear protective clothing which may restrict their movements or reduce their visual field. For example, aircrew wear restraining harnesses that can restrict reach and vision. This also requires consideration in the design of a given system. The branch of science that deals with the measurement of the human body is anthropometrics. Anthropometric data is applied to ensure the appropriate fit of equipment, workstations and workplaces to accommodate the target population.
Replaced/Superseded by document(s)
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Part 3, Section 9 provides information and technical guidance on human characteristics and presents
available data that describes the psychological, physiological and social characteristics of the population
of operators, maintainers and supporters for which the system under consideration should be designed
Hence, Section 9 of this standard covers the following topics:
a) Physical Aspects.
e) Hearing and Audition.
g) Verbal Communications.
h) Non-verbal Communications.
i) Psychological Issues.
j) Human Reliability.
l) Principles of Vision.
m) Principles of Touch.
n) Principles of Smell.