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Construction 2023

This Is What The Ergonomic CAD Workstation Looks Like

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This Is What The Ergonomic CAD Workstation Looks Like
This Is What The Ergonomic CAD Workstation Looks Like

Video: This Is What The Ergonomic CAD Workstation Looks Like

Отличия серверных жестких дисков от десктопных
Video: Workstation ergonomics 2023, January

According to a Bitkom study, 31 million workstation computers were installed in Germany in 2014, and this number is expected to increase to 37.5 million by 2020. Since the days in which construction was carried out on the drawing board have long since passed, the workplaces of the designers here in Germany also count. After all, designers and engineers today mostly work with the support of CAE programs - be it directly at the workplace or mobile with notebooks, tablets or even smartphones, in a meeting or directly at the customer's site.

Dossier and market overview ergonomics

Tips for more ergonomics in the workplace

Intensive and hours-long work on the monitor can quickly lead to health problems: headaches, tension in the neck or back, burning and strained eyes, wrist complaints or the RSI syndrome - the mouse arm - can then quickly become the order of the day. There are various standards and EU directives for the protection of employees for work on the screen, which are implemented in Germany in the VDU regulation. If a CAD workstation is to be designed ergonomically, the office furniture, the various input devices, the monitors themselves, the room climate and the lighting deserve special consideration.

Appendix on requirements to be met by VDU workstations

Requirements to be met at VDU workstations in accordance with the VDU Work Ordinance (extract)

Display device and keyboard:

  • The characters displayed on the screen must be sharp, clear and sufficiently large and have an appropriate character and line spacing.
  • The image shown on the screen must be stable and free from flickering; it must have no distortion.
  • The brightness of the screen display and the contrast between the characters and the background of the characters on the screen must be easy to adjust and adaptable to the conditions of the working environment.
  • The screen must be free from disturbing reflections and glare.
  • The display device must be free and easily rotatable and tiltable.
  • The keyboard must be separate from the display device and tiltable so that users can adopt an ergonomically favorable working position.
  • The keyboard and other input means must be able to be arranged variably on the work surface. The work surface in front of the keyboard must allow hands to be laid on.
  • The keyboard must have a low-reflection surface.
  • The shape and stroke of the keys must allow ergonomic keyboard operation. The labeling of the keys must stand out clearly from the surface and be legible in normal working postures.

Other tools:

  • The work table or the work surface must have a sufficiently large and low-reflection surface and allow a flexible arrangement of the monitor, the keyboard, the writing material and the other work equipment. Sufficient space for an ergonomically favorable working posture must be available. A separate stand for the display device can be used.
  • The work chair must be ergonomically designed and stable.
  • The document holder must be stable and adjustable and be able to be arranged so that uncomfortable head and eye movements are restricted as much as possible.
  • A footrest is available on request if an ergonomically favorable working posture cannot be achieved without a footrest.

Working environment:

  • There must be sufficient space at the VDU workstation for changing work postures and movements.
  • The lighting must correspond to the type of visual task and be adapted to the eyesight of the user; an appropriate contrast between the screen and the work environment must be ensured. The design of the VDU workstation and the layout and arrangement of the lighting prevent disturbing glare, reflections or reflections on the screen and other work equipment.
  • VDU workstations must be set up so that illuminated or illuminated surfaces do not cause glare and reflections on the screen are avoided as far as possible. The windows must be equipped with a suitable adjustable light protection device, which can reduce the amount of daylight entering the VDU workstation.
  • When designing the VDU workstation, the noise caused by the work equipment belonging to the VDU workstation must be taken into account, in particular in order to avoid impairing concentration and speech intelligibility.
  • The work equipment must not lead to an increased heat load at the VDU workplace, which is unacceptable. Adequate air humidity must be ensured.
  • With the exception of the visible part of the electromagnetic spectrum, the radiation must be kept so low that it is insignificant for the safety and health of the user of the display device.

Counteract permanent seats with the right office furniture

Correct posture plays an important role in ergonomics at the workplace. Office furniture manufacturers such as Leuwico GmbH are now increasingly offering height-adjustable work tables for a constant change between sitting and standing. Volker W. Grundmann, ergonomics consultant at Leuwico GmbH, emphasizes that the real requirements are determined by people themselves through their personal behavior. "In addition, there are of course numerous standards for ergonomic workplaces, output devices, lighting, acoustics, air conditioning, etc. DIN EN 29241 describes, for example, the ergonomic requirements for office work with display devices. Aspects such as the viewing angle and monitor distance play a major role here,”Grundmann explains.

In addition, the ZH 1/618 standard determines the applicable safety rules for VDU workstations in the office area. All these regulations show that correct work in the workplace is of great importance.

Picture gallery

Photo gallery with 11 pictures

Tip: Get to know your workplace

Today's designers often want an uncomplicated load change, especially changing seats and stands, says Grundmann. “Jobs that at least encourage relaxed work are given a satisfactory rating. However, if CAD / design workplaces force their users to one-sided loads, such as staring at the monitor while sitting, they are poorly designed. Employees who practically stick to their workplaces should be a thing of the past.”

That is why Leuwico advises users to get to know their CAD workstation properly. So you should use all the adjustment options of the swivel chair to find an optimal sitting position. The cable ducts are also helpful to avoid cable clutter, which limits the legroom. The alignment of the table position can also have a great effect, for example if reflections arise from daylight and disturb work.

Abolish permanent sitting

In order to help its customers achieve more ergonomics, Leuwico offers a measure against permanent sitting with its stand-up workstations. "Our two-level tables are particularly flexible and are characterized by a separately adjustable monitor and operating level," explains Grundmann. This also enables different users to easily and quickly adjust the viewing angle while sitting or standing.

The other height-adjustable table programs are also adaptable: The user can change their position from seat to stand in no time using manual or electronic adjustment, which promotes dynamic work. Because occupational physicians recommend about two to four changes of posture per hour because the regular change in the working position prevents tension and pain.

Work ergonomically

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The office chair: active sitting for a strong back

Of course, an ergonomic office chair must also be added to the flexibly adjustable table: Aerius, for example, offers an active stand-up seat, which should meet all requirements in the workplace without compromise thanks to ergonomic innovations: The Muvman sets standards in terms of freedom of movement, adaptability and seat heights.

In addition, the company has had the swopper in its range since 1997, which enables movements and changes in posture in all directions. The multi-award winning active chair adapts to the user - and not the other way around. This active sitting in three dimensions with many changing seating positions keeps you moving and strengthens your back.

Input devices: keyboard and mouse

Ergonomic keyboards that keep hands and arms in a relaxed position at work have been around for a long time. For example, they have a split keyboard layout, padded palm rests, curved keycaps and, thanks to their curvature, ensure that the wrists have to be twisted excessively. The keyboard is correctly positioned at a distance of 10 to 15 cm from the front edge of the table. To improve this condition, you can work with a palm rest in front of the keyboard.

A mouse for the designer

The mice are also of particular interest in the CAD workstation. Because many designers sit in front of the computer in one-sided working posture for hours each day, the selection of input devices should be geared towards relieving the strain on the neck, shoulder, arm and hand apparatus in particular. This is how pain can be avoided, which is caused, for example, by the Repetitive Strain Injury Syndrome (RSI) - also known as a mouse or tennis elbow.

Antonio Pascucci, Vice President Products at 3D Connexion, explains: “The ideal pair for a workplace that is as ergonomic as possible is a 3D mouse and a 2D mouse specially designed for the needs of CAD users, such as our new Cad Mouse. Thanks to the two-handed method of working, the right and left hand are loaded evenly and work very smoothly and efficiently.”The 3D mouse should have an ergonomically shaped hand rest for long-term users and the buttons should be easy to reach and without dislocations. The 3D Connexion Space Mouse Pro was developed together with designers. The ergonomically shaped palm rest relieves the hand and forearm, especially when working for longer periods. The four most important function keys are located directly under the fingers and are easy to reach.

A second mouse for the designer

“Through discussions with customers, we also found over the years that there was no 2D mouse on the other side of the keyboard that met the specific requirements of CAD users. That is why we at 3D Connexion decided to also pay attention to the second hand of our customers - this is how our Cad Mouse was created,”says Pascucci. This fits optically and functionally well with the 3D mice. The input devices enable a natural, comfortable way of working that is precisely tailored to the needs of professional CAD users from a variety of industries and professions.

Dossier and market overview ergonomics

Tips for more ergonomics in the workplace

Monitor: 4K monitors ensure the right picture

In order not to strain the eyes when staring continuously, a monitor at the CAD workstation should have the following properties:

  • The brightness of the screen display and the contrast between the characters and the background of the characters on the screen must be easy to adjust and adaptable to the conditions of the working environment.
  • The screen must be free from disturbing reflections and glare.
  • The display device must be free and easily rotatable and tiltable.

According to Eizo, supplier of high-end monitors, a trend that is valuable for the designer's workplace is currently foreseeable in terms of resolution: the increase in detail for the 4K screens is enormous for a clear and clear display. Instead of 72 to 96 dpi, drawings of the same size are resolved with 140 dpi. Block graphics and pixel artifacts are a thing of the past. It can be worked more effectively because the view or the zoom factor are changed less frequently. All in all, Eizo's portfolio includes various monitors that are particularly suitable for CAD applications, for example the EcoView EV3237, EV2736W, EV2455 and EV2450 flex-scan monitors.

Due to the IPS panel with LED backlight, all four models display CAD images in a particularly high-contrast and clear manner. In addition, it is extremely stable from a viewing angle. Due to the wide viewing angle, contrast and color tones remain stable even when looking at the edges of the screen. Thanks to a 10-bit look-up table, the image quality is good, especially for CAD renderings, according to Eizo.

High resolution, less scrolling

The Flex-Scan EV2730Q has a 26.5-inch diagonal and a resolution of 1920 × 1920 pixels, i.e. an aspect ratio of exactly 1: 1. It offers CAD users 78% more pixels than a standard Full HD monitor with 1920 × 1080 pixels. The additional vertical space is ideal for displaying large amounts of information in vertically long windows: users have to scroll less and get data displayed more efficiently. The ultra-slim monitors EV2455 and EV2450 impress with a housing frame that is only 1 mm wide. The monitors not only look particularly appealing, they also offer plenty of space for outstanding display.

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Scattering reduces reflections

The monitors use hybrid technology to control the backlight. This ensures flicker-free, color-stable image reproduction. In addition, the brightness can be reduced to 1 cd / m2, so that the screen is glare-free even in poorly lit environments. The monitors offer an anti-reflective surface. Scattering reduces reflection of the ambient light. This reduces glare, improves recognizability and counteracts eye fatigue. With reflective surfaces, users often try to change their posture so that you avoid glare. In this respect, the anti-reflective coating helps to reduce tension or even damage to the posture.

Tip: Choose neutral-colored housings

A small but helpful tip to protect the eyes: Bright, matt and neutral-colored housings (silver, gray, metal-colored) do not contrast so strongly with the surroundings, for example the table surface, the keyboard or the wall behind.

Lighting: the most important element in the workplace for every fourth person

For 23% of employees, lighting is the most important element for an ideal office workplace, according to the results of a Union Investment study, which was carried out in February 2011 among 3145 employees. At CAD workstations, the light intensity according to the standard DIN EN 12464-1 must be at least 500 lux in the visual task area. However, the standard is only a minimum requirement. However, many people prefer higher illuminance levels, for example. In addition, the need for light increases with age. Good lighting is therefore geared towards both visual tasks and individual needs. Good lighting without annoying glare also prevents headaches and eye pain, for example, and improves overall well-being at the workplace.

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The development of the 3D mouse

Floor lamps provide a pleasant environment

Floor lamps with direct and indirect light components are suitable for CAD workstations. Especially with the latest LED lights from Herbert Waldmann GmbH & Co. KG, the direct light component is again somewhat lower compared to previous models and therefore very pleasant. In addition, both parts can be switched and dimmed separately. Workplace lights also provide lighting with individual options. Waldmann luminaires generally take into account a high quality of light, which can be noticed, for example, by glare control.

Tip: lighting planning by experts

The company supports its customers with lighting planning that incorporates the various parameters in the room, such as natural light, ceiling heights or table surfaces, so that the right lamp can be selected. Additional comfort can be achieved, for example, with light management systems such as daylight and presence sensors or biodynamic lighting. The latter changes light intensity and color in the indirect light component, just like daylight.

The right climate in the workplace

A pleasant room climate creates an essential prerequisite for well-being at work and health as well as good performance. There are a few things to consider. A bad indoor climate has a negative impact on health. It can cause colds, conjunctivitis, dry mucous membranes, allergies, nausea and dizziness. Headaches, difficulty concentrating and signs of fatigue can also be related to the climatic conditions. In addition, drafts or cold air currents often cause neck and back pain.

Individual feeling of comfort

The feeling of comfort can differ individually and is primarily dependent on the level of activity, clothing, length of stay in the room and is subject to daily and seasonal fluctuations as well as personal feeling.

Most of them feel comfortable with the following values: The room temperature should generally be 21 ° C to 22 ° C for sedentary or light activities. At high outside temperatures, the room temperature can be higher, but it should not exceed 26 ° C. The room temperature is the air temperature in the middle of a room and is measured at a height of 0.75 m above the floor.

Picture gallery

Photo gallery with 11 pictures

Climate improvement measures

  • Windows should be openable. It is advisable to ventilate every hour or to provide ventilation for 10-15 minutes during breaks.
  • Green and aquatic plants such as fern, Cyprus grass and linden tree provide oxygen and moisture. Some bind pollutants.
  • The temperature should be regulated in each room or in open-plan offices in the individual zones.
  • Air pollutants can be reduced or avoided by using low-pollutant or better pollutant-free materials.
  • Devices that are not absolutely required at the workplace, such as printers or copiers, are better located in well-ventilated, separate rooms.

Tips for setting up the PC workstation

An ergonomically designed workplace helps to prevent incorrect strain on the spine and intervertebral discs, muscle tension and rapid fatigue. This is achieved when all elements in the workplace are adapted to the individual conditions. Here are a few tips for you:

  • Chair: The height is correct when both feet are firmly on the floor and the thighs and lower legs form a right angle.
  • Table: After the chair is set correctly, the work table should follow. The height should be chosen so that the forearms lie loosely on the table top and the upper and lower arms form a right angle. If the height of the work table cannot be adjusted, a support for the feet helps as compensation.
  • Monitor: An ergonomic screen is at least 50 cm from the front of the keyboard so that you don't have to constantly turn your head and neck. The following applies to the height of the screen: The top line on the monitor should be below eye level.
  • Input devices: The keyboard and other input devices must be able to be arranged variably on the work surface. The work surface in front of the low-reflection keyboard should allow hands to be laid on. The mouse belongs close to the keyboard.
  • Space: For standard office tasks, a work surface of at least 160 cm × 80 cm is required.
  • Sitting correctly: Better than staying motionless in one and the same position for a long time is dynamic sitting, i.e. sometimes upright, sometimes bent over, sometimes leaning back.
  • Lighting: At least 500 lux, adaptable to the user's eyesight and the work task. High contrasts in the field of vision should be avoided. A combination of indirect / direct lighting plus individual workplace lights is ideal.
  • Climate: The ideal room temperature is approx. 22 ° C with a humidity of approx. 50 percent.

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