oSIST prEN ISO 9241-5:2023
(Main)Ergonomics of human-system interaction - Part 5: Workstation layout and postural requirements (ISO/DIS 9241-5:2023)
Ergonomics of human-system interaction - Part 5: Workstation layout and postural requirements (ISO/DIS 9241-5:2023)
Ergonomische Anforderungen für Bürotätigkeiten mit Bildschirmgeräten - Teil 5: Anforderungen an Arbeitsplatzgestaltung und Körperhaltung (ISO/DIS 9241-5:2023)
Dieser Teil von ISO9241 legt ergonomische Leitsätze hinsichtlich der Benutzeranforderungen sowie der Gestaltung und Beschaffung von Arbeitsstationen für die Benutzung von interaktiven Systemen mit optischen Anzeigen fest.
Insbesondere sind die allgemeinen Grundsätze und Anforderungen, die in diesem Teil von ISO9241 festgelegt sind, auf die Normen anzuwenden, die die technische Gestaltung der Möbel und der Ausstattung des Arbeits
platzes festlegen. Sie wenden sich an Gestalter von Produkten und Arbeitsstationen sowie an Personen, die solche Arbeitsstationen einrichten.
Ergonomie de l’interaction homme-système - Partie 5: Aménagement du poste de travail et exigences relatives aux postures (ISO/DIS 9241-5:2023)
Ergonomija medsebojnega vpliva človek-sistem - 5. del: Ureditev delovnega mesta in zahteve za položaj telesa (ISO/DIS 9241-5:2023)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 9241-5:2023
01-maj-2023
Nadomešča:
SIST EN ISO 9241-5:2001
Ergonomija medsebojnega vpliva človek-sistem - 5. del: Ureditev delovnega mesta
in zahteve za položaj telesa (ISO/DIS 9241-5:2023)
Ergonomics of human-system interaction - Part 5: Workstation layout and postural
requirements (ISO/DIS 9241-5:2023)
Ergonomische Anforderungen für Bürotätigkeiten mit Bildschirmgeräten - Teil 5:
Anforderungen an Arbeitsplatzgestaltung und Körperhaltung (ISO/DIS 9241-5:2023)
Ergonomie de l’interaction homme-système - Partie 5: Aménagement du poste de travail
et exigences relatives aux postures (ISO/DIS 9241-5:2023)
Ta slovenski standard je istoveten z: prEN ISO 9241-5
ICS:
13.180 Ergonomija Ergonomics
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
oSIST prEN ISO 9241-5:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 9241-5:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9241-5
ISO/TC 159/SC 4 Secretariat: BSI
Voting begins on: Voting terminates on:
2023-03-22 2023-06-14
Ergonomics of human-system interaction —
Part 5:
Workstation layout and postural requirements
ICS: 35.180; 13.180
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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oSIST prEN ISO 9241-5:2023
ISO/DIS 9241-5:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9241-5
ISO/TC 159/SC 4 Secretariat: BSI
Voting begins on: Voting terminates on:
Ergonomics of human-system interaction —
Part 5:
Workstation layout and postural requirements
ICS: 35.180; 13.180
This document is circulated as received from the committee secretariat.
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
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oSIST prEN ISO 9241-5:2023
ISO/DIS 9241-5:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Guiding principles . 4
4.1 General considerations. 4
4.2 Versatility and flexibility . 4
4.3 Fit . 4
4.4 Postural change . 5
4.5 User information . 5
4.6 Maintainability-adaptability . 5
5 Design requirements and recommendations . 6
5.1 General . 6
5.2 Postures . 6
5.2.1 Design reference posture(s) . 6
5.2.2 Sitting postures . 7
5.2.3 Standing and sit/stand postures . . 7
5.2.4 Intermediate postures between sitting and standing - perching . 7
5.3 Ease of adjustment . 9
5.4 Support surfaces . 10
5.4.1 General recommendations . 10
5.4.2 Clearances under worksurfaces . 11
5.4.3 Viewing distances and angles of view . 11
5.4.4 Finish of the work surface.12
5.4.5 Safety and stability aspects of workstations .13
5.4.6 Energy loss to contact surfaces . 13
5.5 Work chair . 13
5.5.1 General considerations . 13
5.5.2 Parameters related to fit . 13
5.5.3 Dynamic aspects of seating . 14
5.5.4 Back support . 15
5.5.5 Arm support .15
5.6 Additional support elements . . 16
5.6.1 Document holders . 16
5.6.2 Footrest . 16
5.6.3 Support for the hands/wrists/forearms . 16
5.6.4 Workstations with monitor arm for the visual display unit and height
adjusting accessories . 17
5.7 Layout of workstations within the work space . 17
5.7.1 General considerations . 17
5.7.2 Cable management . . 18
6 Conformance .18
7 Measurement .18
7.1 Support surfaces . 18
7.2 Safety and stability aspects of workstations . 19
7.3 Seat height . 19
7.4 Castors . 19
7.5 Layout of workstations within the workspace . 19
Annex A (informative) Anthropometric data needed for workstation design and selection .20
Bibliography .27
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oSIST prEN ISO 9241-5:2023
ISO/DIS 9241-5:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 4,
Ergonomics of human-system interaction, Working Group WG 3, Controls, workplace and environmental
requirements.
This second edition cancels and replaces the first edition (ISO 9241-5:1998), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— The principle of fit was changed to include a reference to ISO/TR 9241-514
— References were updated.
A list of all parts in the ISO 9241 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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oSIST prEN ISO 9241-5:2023
ISO/DIS 9241-5:2023(E)
Introduction
The purpose of this part of ISO 9241 is to promote and enhance performance and comfort while
minimizing risks to users’ safety and health. Users of interactive systems typically adopt a range
of postures (seated with leaning, upright or reclining torso, standing or a combination of both).
Workplaces which accommodate such usage can encourage movement, promote comfort and reduce
physical, mental and visual problems.
This part of ISO 9241 is intended for use by product and workstation designers and implementers.
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oSIST prEN ISO 9241-5:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 9241-5:2023(E)
Ergonomics of human-system interaction —
Part 5:
Workstation layout and postural requirements
1 Scope
This part of ISO 9241 specifies ergonomic guiding principles which apply to the user requirements,
design, and procurement of workstation equipment for using interactive systems with visual displays.
In particular, the general principles and requirements specified in this part of ISO 9241 apply to the
standards specifying technical design of furniture and equipment constituting the workplace. They are
intended for use by product and workstation designers and implementers.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6385:2016, Ergonomics principles in the design of work systems
ISO 26800:2011, Ergonomics — General approach, principles and concepts
ISO 7250, Basic human body measurements for technological design — Part 1: Body measurement
definitions and landmarks
ISO 2813:2014, Paints and varnishes — Determination of gloss value at 20°, 60° and 85°
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
angle of view
angle between the line-of-sight and the line orthogonal to the surface of the display at the point where
the line-of-sight intersects the image surface of the display
[SOURCE: ISO 9241-302:2008]
3.2
anthropometry
study and measurement of the physical dimensions of the human body
3.3
armrest
support for the lower arms
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3.4
back rest
part of a work chair which provides support for the back
3.5
castor
wheeled component on the bottom of furniture to facilitate appropriate movement on the floor surface
3.6
design reference posture
posture specified for the purpose of workstation design to define relative positions and dimensions
3.7
deviation
alteration from the neutral position
3.8
dynamic posture
body position which changes, with relative movements of the limbs or other parts of the human body in
relation to one another or with respect to a fixed object (such as a workstation)
3.9
extension
movement that increases the angle between two adjacent bones
Note 1 to entry: Dorsal pertains to the back of the hand, palmar to the palm.
Note 2 to entry: Hand extension is the movement of the hand in the dorsal direction.
Note 3 to entry: Neck extension (cervical extension) is the movement of the head backward.
3.10
flexion
movement that decreases the angle between two adjacent bones
Note 1 to entry: Palmar pertains to the palm of the hand.
Note 2 to entry: Hand flexion is the movement of the hand in the palmar direction.
Note 3 to entry: Neck flexion is the movement of lowering the chin down to the chest.
3.11
gloss
the mode of appearance by which reflected highlights of objects are perceived as superimposed on the
surface due to the directionally selective properties of that surface
[SOURCE: http:// cie .co .at/ eilvterm/ 17-24-080, downloaded 2021-04-22]
3.12
gloss unit
measure for quantifying the gloss of a surface
3.13
interactive system
combination of hardware and/or software and/or services and/or people that users interact with in
order to achieve specific goals
Note 1 to entry: This includes, where appropriate, packaging, user documentation, on-line and human help,
support and training.
[SOURCE: ISO 9241-11:2018, 3.1.5]
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ISO/DIS 9241-5:2023(E)
3.13.1
kyphosis
convex curvature of the thoracic spine
3.14
intended user population
group of human beings for which a product or a workstation is designed
EXAMPLE Male and female workers of South-East Asian origin aged between 45 and 65 years.
3.15
line-of-sight angle
the angle between a horizontal line and the visual axis of the eye (the line connecting the point of
fixation and the centre of the pupil)
3.16
lordosis
concave curvature of the spine
3.17
lumbar
region of the back between the thorax and the pelvis
3.18
popliteal
of or pertaining to the back of the knee
3.19
posture
overall position of the body, or body parts in relation to each other, with respect to the workplace and
its components
3.20
reference plane
surface designed to support the feet
Note 1 to entry: If not otherwise indicated, the reference plane is the ground. Any other level higher or lower than
the ground level may be used as a reference plane for the calculation of the height of support surfaces.
3.21
static posture
adoption of a body position which is fixed over time and where there is muscle contraction without
motion
3.22
task analysis
analytical process employed to determine the specific behaviours required of people when operating
equipment or doing work
Note 1 to entry: The task analysis is not a risk assessment of the workplace according to legal requirements.
3.23
workplace
arrangement of workstations allocated to one person to complete a work task
3.24
work space
volume of space allocated to one or more persons in the work system to complete a work task
3.25
worksurface
surface on which equipment and task materials are used
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ISO/DIS 9241-5:2023(E)
3.26
workstation
assembly comprising display equipment with or without a central processing unit, which may be
provided with a keyboard and/or input device and/or software determining the operator/machine-
interface, optional accessories, peripherals and the immediate work environment
4 Guiding principles
4.1 General considerations
Workplace design should be based on the task requirements. Therefore, it should be preceded by an
analysis of the tasks that it is to support. Such an analysis should give information about the different
tasks and sub-tasks which are performed and about the use of related equipment. It should also identify
the relative priority given to different information sources within the user’s task with respect to
placement of displays, equipment location and job aids. For example, in many data-entry tasks, viewing
of the hard copy has greater priority than viewing of the display. For many other tasks, the visual
display is the main source of information and needs to be placed accordingly.
The task analysis should include consideration of
a) major tasks and their inter-relationships: frequency, importance, position of visual objects,
duration and type of use of all associated equipment and their interrelationships,
b) task analysis should also reference type of work, e.g. individual or collaborative, whether it is a
shared workspace
c) the position and use of the hands: implications for posture, reach, and device manipulation by
the relative positioning of the equipment and task materials, frequency, duration and complexity of
movements.
For the design and selection of workplaces the following five interrelated principles apply:
— versatility-flexibility;
— fit;
— postural change;
— user information;
— maintainability-adaptability.
The statements of this clause are intended to provide general principles and guidelines underlying the
requirements and recommendations given in Clause 5.
4.2 Versatility and flexibility
Workstations should enable the intended user population to perform a range of tasks comfortably and
efficiently. In addition, workstation design should be appropriate for the range of tasks to be performed
at the workstation, taking into account user characteristics (e.g. keyboard skills, anthropometric
variation and user preferences). It should also be dependent upon usage times such that the longer the
time spent at the interactive system, the more important is the observance of good workstation design.
4.3 Fit
Selection and design of furniture and equipment requires a fit to be achieved between a range of task
requirements and the needs of users. The concept of fit concerns the extent to which furniture and
equipment (work chairs, work surfaces, visual display units, input devices, etc.) can accommodate
individual users’ needs.
4
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oSIST prEN ISO 9241-5:2023
ISO/DIS 9241-5:2023(E)
Good fit is needed for the intended user population including users sharing workstations and users with
special needs. Fit can be accomplished by furniture built for a specified use (or user), or be provided in
a range of sizes and forms or by adjustability and combinations thereof.
Since, except under special circumstances, workstations cannot be custom-made for individual users,
some alternative forms of ensuring a good fit are required. The extent to which the workstation provides
a good fit between the requirements of users and their work should be of primary consideration.
There is an important limitation regarding the fit estimates achieved when using percentile values to
th th
define workspace parameters; for example, the use of 5 to 95 percentile anthropometric values as
th th
suggested in 5.4.2. The range between the minimal 5 percentile value and the maximal 95 percentile
value will always accommodate at least 90 percent of the intended users for that single dimension.
However, combining two or more dimensions defined by percentile values generally reduces the
percentage of users accommodated. For example, a chair seat has dimensions of height, length and
width. Each dimension might accommodate 90 percent of the users separately, but the actual fit,
or accommodation on all three variables at the same time is almost always less than 90 percent,
theoretically ranging approximately between 70 and 90 percent. For further discussion of the limitations
of percentile values in multivariate designs, see Gordon et al (Gordon et al, 1997), and for an introduction
to some multivariate techniques used to estimate multivariate fit, see ISO/TR 9241-514:2020.
4.4 Postural change
The workplace organization, the task and the furniture should encourage voluntary postural changes.
Postures adopted by users and the need for changes in posture are very markedly influenced by work
organization and in particular, task requirements.
4.5 User information
The users should be informed why and how the furniture and other devices (e.g. support for the visual
display unit) should be adjusted.
Where specific skills are required for achieving a comfortable and efficient workplace, for example in
adjusting work chair or worksurface heights or finding a satisfactory viewing distance, adequate user
information and training in such skills should be provided. It is desirable that the design of furniture
should minimize the need for training and for user information making it more intuitive.
Guidance and training on the above factors should be given to users to ensure that they are fully
acquainted with the design and functioning of the workplace and feel competent and confident to use the
workplace properly. In particular, training should ensure that users are familiar with the mechanisms
of adjustment and how to decide when furniture adjustment for the individual user and task is needed.
4.6 Maintainability-adaptability
Requirements for task performance, in addition to workplace design, should also take into account
factors such as maintenance, accessibility, and the ability of the workplace to adapt to changing
requirements.
Workstation designers should consider that access for maintenance can be accomplished easily and
that disruption to ongoing task performance is minimized.
Workstation design should also facilitate adaptation of furniture and equipment in response to
changing requirements and circumstances.
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oSIST prEN ISO 9241-5:2023
ISO/DIS 9241-5:2023(E)
5 Design requirements and recommendations
5.1 General
This clause contains requirements and recommendations for the configuration of the workstations
that will facilitate comfortable and efficient operation. 5.2 to 5.7 identify the parameter
...
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