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HA0289T Rev A Jan 2013
Chapter 4
Once the user is seated, their seating height and footrest (if used) should be adjusted so the interface with the workstation is
comfortable – See Fig. 4.1 for guidance on preferred workspaces.
Fig. 4.1 Preferred workspaces for feet and hands
Where operators are required to visually monitor work, di splays, control devices etc., of any nature th ese should, where
practicable, be placed so that the top edge of the viewed area is on or below the operator’s horizontal line of sight. If possible,
it is good practise to have all viewed areas in the range of 0
°
(horizontal sight) to 30
°
below that line. A maximum angle of 45
°
below horizontal is acceptable for intermittent use only.
All keyboards, mice and other control equipment should be mounted and used in a manner appropriate to the task in hand. For
example if the keyboard is only to be used occasionally, perhaps during set-up, it should be placed on a side table or even the
breadboard and stored after use, whereas a fully engineered ergonomic solution would be better for an application requiring
large amounts of typing.
Lighting is also an important issue that must be addressed at the system design stage and there are many national standards
to cover appropriate lighting levels.
Finger traps should be avoided. Operation of components should not interfere with other settings or adjacent equipment.
All warning labels must adhere to the end user’s national standards and should be placed in a prominent and appropriate
position.
Note
For simplicity, only one body size is shown and adaptations for other body sizes will be necessary. It is advisable
to leave legroom, which is free from obstructions/ bump hazards, under the desk.
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