What is work loaded facility
Working at the computer workstation
1 VDU workstation and VDU work - terms
2 Loads from work at the screen
3 Requirements for the display device
4 Positioning the screen
5 Adjusting the screen
6 Requirements for the computer mouse
7 Further information
1VDU workstation and VDU work - terms
According to the VDU Workplace Ordinance, a computer workstation is a workstation that can be equipped with:
- a display device,
- Additional devices, such as B. Calculator,
- the software necessary for the activity,
- Devices for collecting data (e.g. keyboard, mouse),
- other work equipment (e.g. template holder),
- as well as the immediate work environment.
According to the VDU work regulations, employees at computer workstations are those who use a display device for "a not insignificant part" of their daily work.
2Loads from screen work
With the correct positioning of the screen and keyboard, as well as the correct screen setting, you can reduce the load on screen work.
Correct positioning of the screen on the desk is important, among other things, to avoid health problems with symptoms in the neck and shoulder area. A setup in which employees have to turn their head or torso to look at the screen should be avoided, as should a setup that is too high, as this puts a lot of strain on the neck and shoulder muscles. Glare, e.g. B. by solar radiation or reflections from windows and lamp light on the screen surface make the work even more difficult.
Correct screen settings are just as important. Strong contrasts and differences in brightness between the screen surface and the background make work difficult because the eye is constantly forced to compensate for these differences in brightness. Due to the poor visibility and the constant work of balancing the eyes, the strain on the user increases.
A representation with dark characters on a light background (positive representation) reduces visual stress. In contrast, a so-called negative image puts a strain on the visual apparatus. The consequences are reduced performance and faster fatigue. The greater stress on the visual system can also lead to health problems with symptoms such as B. headache or watery and burning eyes.
3Requirements for the display device
- The screen must be freely positionable and easily rotatable and tiltable. This allows it to be adapted to the individual needs and characteristics of the user.
- The size of the screen must be adapted to the task at hand.
- The screen should be anti-glare.
4Positioning the screen and keyboard
The following points must be observed for an ergonomic monitor setup:
- The screen should be set up securely.
- The screen should always be arranged with the viewing direction parallel to the window.
Installation with the window behind the user is to be avoided, as reflections occur here.
Setting up in front of the window should also be avoided, as the differences in brightness between the screen surface and the bright background (window), especially in direct sunlight, are too great here.
- The keyboard must be separated from the screen and should be 10 cm to 15 cm away from the edge of the table so that the heels of the hand can rest on the work surface during pauses in input.
- The screen, the keyboard and the office chair should be aligned straight on the table and arranged on one axis. This is the only way to prevent twisting of the spine.
- When working with templates, manuscripts, etc., a template holder should be used as it helps reduce eye movements. With a document holder, fatigue is less and concentration remains higher. It must be set up in such a way that the template is level with the screen surface.
- If there is a possibility that the user is blinded by solar radiation and reflections occur on the screen, anti-glare devices such as blinds or lamellar curtains must be attached to the windows.
5Adjusting the screen
- Letters and numbers on the screen must be large enough not to strain your eyesight. The capital letters should be a little more than 3 mm at a viewing distance of 50 cm.
6Requirements for the computer mouse
The computer mouse is a daily tool for many people. Choosing the right model can make work easier. But if the mouse does not suit the user, it can be painful.
Symptoms of fatigue, tension and discomfort up to the mouse arm can be caused by unsuitable input devices and unfavorable work techniques.
The mouse should be designed so that
- their buttons can be operated in the normal position of the body and hands without the mouse inadvertently changing its position,
- it is adapted to the user's hand size,
- Switching elements can be operated easily and safely; this also includes a corresponding feedback and a push button force in the range of 0.5 N to 0.8 N,
- it can be operated with either hand, otherwise mice should be available for right- and left-handers or for right- or left-handers.
If you switch a lot between mouse and keyboard, you should choose a flat model. This makes it easier to switch between the two work tools and avoids uncomfortable bending angles of the wrist.
The position of the mouse close to the keyboard reduces the outward rotation of the upper arm. A working technique with a supported forearm and guidance of the mouse with the wrist and not with the arm is recommended. The forearm with the ball of the hand should be able to rest completely on the table surface
Mousepads for easier guidance of the mouse on the surface are no longer absolutely necessary with today's optical mice. But hand-arm rests are helpful.
The following applies to the mouse surface: non-slip surface and a matt, light color.
Together with the appropriate mouse software (mouse driver), it must be ensured that the direction of movement of the mouse and the associated movement of the pointer on the screen correspond to each other and correspond to the expectations of the user - for example, mouse towards the screen, mouse pointer upwards.
Visual aids at the computer workstation
Accident prevention in the office
Correct sitting at the office workplace
Variety and movement in the office
Electrical devices in the office
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