ISO 19682:2023
(Main)Furniture — Tables — Test methods for the determination of stability, strength and durability
Furniture — Tables — Test methods for the determination of stability, strength and durability
This document specifies test methods for the determination of stability, strength and durability of the structure of all types of tables and desks without regard to use, materials, design/construction or manufacturing process. This document does not apply to baby changing units. This document does not cover test methods for the assessment of ageing, degradation, flammability or electrical components.
Ameublement — Tables — Méthodes d'essai pour la détermination de la stabilité, de la résistance et de la durabilité
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INTERNATIONAL ISO
STANDARD 19682
First edition
2023-07
Furniture — Tables — Test methods
for the determination of stability,
strength and durability
Ameublement — Tables — Méthodes d'essai pour la détermination de
la stabilité, de la résistance et de la durabilité
Reference number
ISO 19682:2023(E)
© ISO 2023
---------------------- Page: 1 ----------------------
ISO 19682:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
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ISO 19682:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General test conditions .2
4.1 Preliminary preparations . 2
4.2 Application of forces . 3
4.3 Tolerances . 3
5 Test equipment and apparatus .3
6 Test procedures – strength and durability . 6
6.1 General . 6
6.2 Horizontal static load test . 6
6.3 Vertical static load tests . 11
6.3.1 Vertical static load on main surface . 11
6.3.2 Additional vertical static load test where the main surface has a length >
1 600 mm .12
6.3.3 Vertical static load on end extension . 13
6.4 Horizontal durability and stiffness test . 14
6.4.1 General . 14
6.4.2 Horizontal durability test . 15
6.4.3 Stiffness of the structure . 19
6.5 Vertical durability test. 20
6.6 Vertical impact test. 20
6.6.1 General .20
6.6.2 Vertical impact test for all other table tops . 21
6.7 Deflection of table tops . 21
6.8 Durability of tables with castors . 22
6.9 Drop test . 22
6.10 Table top-to-leg assembly strength. 23
7 Test procedures – stability .28
7.1 General .28
7.2 Stability under vertical load .28
7.2.1 General .28
7.2.2 Test for tables that are or can be set to a height of 950 mm or less .28
7.2.3 Test for tables that are or can be set to a height greater than 950 mm .29
7.3 Stability for tables with extension elements (drawers) .29
7.4 Stability of tables designed to support a parasol .29
7.5 Horizontal stability test for tables with castors .30
7.6 Force stability test for tall products . 31
8 Test procedures – height adjustment mechanism .33
8.1 General . 33
8.2 Durability of height adjustment mechanism . 33
9 Tilting top table — cycle test .35
9.1 Test setup . 35
9.2 Test procedure . 36
10 Tilting top table – latch strength test .36
10.1 Test setup .36
10.2 Test procedure . 36
11 Test report format .37
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ISO 19682:2023(E)
Annex A (informative) Guidance for the choice of loads, cycles, etc. for table and desk
furniture strength, durability, and stability tests .39
Annex B (informative) Purpose and applicability . 44
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ISO 19682:2023(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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
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 136, Furniture.
This document cancels and replaces ISO 21016:2007, which has been technically revised.
The main changes are as follows:
— the scope has been broadened to cover not only office furniture.
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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ISO 19682:2023(E)
Introduction
This document is a proposal for test methods for stability, strength and durability for table and desk
furniture. Safety aspects (e.g. resistance to heat and electric shock) of electrically motorized furniture
are additionally covered by IEC 60335-2-116.
Other methods for determination of the strength and durability of storage components, seating
surfaces, and other features which can be incorporated into tables are covered by other standards.
This document specifies test methods only. It does not specify acceptance criteria. These should be
specified in a document for general requirements. If this is not available, suggested loads and cycles can
be found in Annex A. It is up to the specifier to determine which tests are appropriate.
Tests carried out according to these test methods are intended to demonstrate the ability of the item
to give satisfactory service in its intended environment. The tests have been developed for units/
components that have not been in use. However, when properly justified, they can be used for fault
investigation.
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INTERNATIONAL STANDARD ISO 19682:2023(E)
Furniture — Tables — Test methods for the determination
of stability, strength and durability
1 Scope
This document specifies test methods for the determination of stability, strength and durability of
the structure of all types of tables and desks without regard to use, materials, design/construction or
manufacturing process.
This document does not apply to baby changing units.
This document does not cover test methods for the assessment of ageing, degradation, flammability or
electrical components.
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 48-4, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 4: Indentation
hardness by durometer method (Shore hardness)
ISO 2439, Flexible cellular polymeric materials — Determination of hardness (indentation technique)
ISO 7170:2021, Furniture — Storage units — Test methods for the determination of strength, durability
and stability
ISO 12543-4, Glass in building — Laminated glass and laminated safety glass — Part 4: Test methods for
durability
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
duty cycle
length of time the height adjustable table’s drive system may be operated without impairing its useful
life
3.2
end extension
added surface beyond the original surface that is not directly supported by the floor and adds 200 mm
or more to an end
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ISO 19682:2023(E)
3.3
levelling device
device whose primary function is to keep the table top horizontal
EXAMPLE Adjustable feet, glide, or similar with a limitation of 40 mm of vertical range.
3.4
main surface
surface that is not a shelf
3.5
safety glass
glass with additional features that make it less likely to break, or less likely to pose a threat when
broken
3.6
secondary surface
surface that is vertically separated from, and smaller than, the main surface (3.4) and used for storage
or occupied exclusively by the equipment placed on the surface
EXAMPLE Shelf.
3.7
structure
load bearing parts of furniture
EXAMPLE Frame, top and legs.
3.8
type 1 table
table having a main surface (3.4) 600 mm or more above the floor surface and a surface area greater
2
than 0,50 m
3.9
type 2 table
table that is not a type 1 table (3.8)
4 General test conditions
4.1 Preliminary preparations
The furniture shall be tested as delivered. Knock-down furniture shall be assembled according to the
instructions supplied with it. If the instructions allow the furniture to be assembled or combined in
different ways, the most adverse combination shall be used for each test. Knock-down fittings shall
be tightened before testing. Further tightening shall not take place unless specifically required by the
manufacturer.
During testing, the unit shall be placed on the floor and levelled, unless otherwise specified. Levelling
devices shall be set to the mid position but not more than 13 mm from fully closed.
Products with adjustable features shall be set at their most adverse position for testing unless otherwise
specified.
Unless otherwise specified by the manufacturer, the sample for test shall be stored in indoor ambient
conditions for at least 24 h immediately prior to testing. The tests shall be carried out at indoor ambient
conditions, but if during a test the temperature is outside the range of 15 °C to 27 °C, the maximum and/
or minimum temperature shall be recorded in the test report. The test for deflection of table tops (see
6.7), except those made from metal, glass and stone, shall be carried out at a relative humidity of 45 %
to 55 %. If during a test the relative humidity is outside of the range of 45 % to 55 %, the maximum
and/or minimum humidity shall be recorded in the test report.
2
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ISO 19682:2023(E)
If a test cannot be carried out as specified (e.g. because a loading pad cannot be used for the application
of a force due to the design of a product), the test shall be carried out as closely as possible to that
specified. Any modification to the test method shall be technically justified and shall be recorded in the
test report.
Before beginning the testing, visually inspect the unit thoroughly. Record any defects so that they are
not assumed to have been caused by the tests. Carry out measurements, if specified.
It is not necessary that all tests be carried out on the same unit, but all tests specified for a particular
component shall be carried out on the same component.
4.2 Application of forces
The test forces in durability and static load tests shall be applied sufficiently slowly to ensure that a
negligible dynamic load is applied. Unless otherwise specified, each static load shall be maintained for
not less than 10 s and not more than 15 s. The forces in durability tests shall be applied sufficiently
slowly to ensure that kinetic heating does not occur. Unless otherwise stated, durability loads shall be
maintained for (2 ± 1) s.
Forces shall be applied in a manner which ensures normal functioning of self-closing and damping
mechanisms.
The forces may be replaced by masses. The relationship 10 N = 1 kg shall be used.
4.3 Tolerances
Unless otherwise stated, the following tolerances are applicable to the test equipment:
— forces: ±5 % of the nominal force;
— masses: ±1 % of the nominal mass;
— dimensions: ±1 mm of the nominal dimension; except loading pads ±5 mm of the nominal dimension;
for dimensions greater than 200 mm, the tolerance shall be ±0,5 % of the dimension;
— angles: ±2° of the nominal angle;
— the accuracy for the positioning of loading pads and impact plates shall be ±5 mm.
Test masses, forces, dimensions, angles, times, rates and velocities used to perform the tests shall be
targeted at the nominal values specified.
NOTE For the purposes of uncertainty measurement, test results are not considered to be adversely affected
when the above tolerances are met.
5 Test equipment and apparatus
5.1 Unless otherwise stated, the tests may be applied by any suitable device because the results are
not dependent upon the apparatus, except in the case of impact tests where the apparatus described in
5.1 shall be used.
The equipment shall not inhibit deformation nor cause unnatural deformation of the unit/component,
i.e. it shall be able to move so that it can follow the deformation of the unit/component during testing.
With the exception of the horizontal static, durability and stiffness tests, described in 6.2 and 6.4, all
loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot
point shall be as close as practically possible to the load surface.
Loading pads for the horizontal static, durability and stiffness tests described in 6.2 and 6.4, shall not
pivot.
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ISO 19682:2023(E)
With the exception of the horizontal static, durability and stiffness tests described in 6.2 and 6.4, if a
loading pad tends to slide, use a slip resistant material between the loading pad and the surface being
tested.
5.2 Vertical impactor, as shown in Figure 1 and comprised of the components specified in 5.2.1 to
5.2.3.
5.2.1 Circular body, 200 mm in diameter separated from the striking surface by helical compression
springs and free to move relative to it on a line perpendicular to the plane of the central area of the
striking surface.
The body and associated parts minus the springs shall have a mass of (17 ± 0,1) kg and the whole
apparatus, including mass, springs and striking surface, shall have a mass of (25 ± 0,1) kg.
5.2.2 Springs, which shall be such that the nominal spring rate of the combined spring system is
(7 ± 2) N/mm and the total friction resistance of the moving parts is less than 1 N.
The spring system shall be compressed to an initial load of (1 040 ± 5) N (measured statically) and
the amount of spring compression movement available from the initial compression point to the point
where the springs become fully closed shall be not less than 60 mm.
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ISO 19682:2023(E)
5.2.3 Striking surface, which shall be a rigid circular object, 200 mm in diameter, the face of which
has a convex spherical curvature of (300 ± 5) mm radius with a 12 mm front edge radius.
Key
1 joint of lifting device not inhibiting free fall
Figure 1 — Vertical impactor
5.3 Floor, horizontal, flat and rigid with a smooth surface.
For the drop test (6.9) the floor shall be faced with a 2 mm thick layer of rubber with a hardness of
(85 ± 15) IRHD according to ISO 48-4 or a steel plate with a minimum thickness of 5 mm, placed directly
on the floor.
5.4 Stops, to prevent the article from sliding but not tilting, no higher than 12 mm except in cases
where the design of the item necessitates the use of higher stops.
5.5 Loading pad, a rigid cylindrical object, 100 mm in diameter, with a flat, smooth face and a 12 mm
edge radius.
3
5.6 Foam, 25 mm thick layer of flexible foam with a bulk density of (120 ± 25) kg/m .
5.7 Steel test tube, (18 ± 1,5) mm in diameter and (1,5 ± 0,5) mm in wall thickness with a length
such that a force can be applied at a distance of 2 200 mm above the floor.
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ISO 19682:2023(E)
5.8 Test surface for castor durability test, horizontal, flat smooth and rigid steel surface.
5.9 Obstacles for castor durability test, steel strips 50 mm wide and 3,2 mm high with the top
edges having a radius of 3,2 mm, 500 mm apart and parallel on the floor surface and perpendicular to
the test direction.
5.10 Test foam for glass, which shall be a foam sheet with a thickness of 100 mm, a bulk density of
3
(35 ± 5) kg/m and an indentation hardness index of (170 ± 40) N HA (40 %/30 s) in accordance with
ISO 2439.
6 Test procedures – strength and durability
6.1 General
Unless otherwise specified, the tests shall be carried out in the configuration most likely to cause
failure.
NOTE There can be multiple configurations likely to cause failure. Multiple test configurations can be
required.
Where the table top can be extended or enlarged, then the extended configuration shall be considered
most likely to cause failure and tested as extended unless specified otherwise. In this case, the extended
configuration is considered to be the main surface except for end extensions. If a test cannot be carried
out as specified, the test shall be carried out as closely as possible to that specified. Any modification to
the test method shall be technically justified and shall be recorded in the test report.
If a table has storage components (secondary surfaces), then all the applicable tests in this document
shall be conducted, unless specified otherwise, by using the loads in accordance with ISO 7170:2021,
Table 1.
6.2 Horizontal static load test
Position the table on the test surface, in its normal position of use without extending end extensions.
Height adjustable tables shall be set to their highest position, but not to exceed 950 mm. Restrain the
base of the table by stops placed in all directions at the opposite end to that at which the horizontal test
force is first to be applied.
Apply a 50 kg mass to an area of (300 ± 50) mm × (300 ± 50) mm, or a diameter of (300 ± 50) mm, to the
approximate centre of the table top. See Figure 2 for recommended examples of load placement.
For type 2 tables, apply the 50 kg mass or the manufacturer's recommended maximum but no less than
25 kg.
For vertical flat edge tops (no profile-edge), apply the specified horizontal force by means of a loading
pad (5.5) centred within 10 mm of the table top level (see Figure 3) in a direction perpendicular to a
line joining the two legs/supports, midway between the legs/supports of the side of the applied force.
See Figures 2 a), c), e), g) and i). For tops without a vertical edge (profile-edge), apply the load with the
loading pad centred at the outermost edge even if more than 10 mm from the top (see Figure 3).
If the table top is not secured to the understructure and the top moves when the specified force is
applied, reduce the force sufficiently to just prevent movement. Record the force applied. The applied
force shall not be reduced below the specified minimum force.
If the unrestrained portion of the base lifts when the specified force is applied, reduce the force
sufficiently to just prevent lifting. Record the force applied. The applied force shall not be reduced
below the specified minimum force. If unrestrained portion of the base lifts at this force, the specified
mass applied to the table top shall be increased gradually until this tendency ceases.
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ISO 19682:2023(E)
Leaving the stops in position, use the same procedure to determine the force to be applied in the
opposite direction.
One application of the force in each direction represents one cycle. Repeat the load application for a
total of 10 cycles.
Repeat the test method applying the specified horizontal force at the work top level along the line
joining the two legs/supports. See Figures 2 b), d), f), h) and j).
Apply the same force in the opposite direction.
One application of the force in each direction represents one cycle. Repeat the load application for a
total of 10 cycles.
Repeat this procedure until each unique leg design/construction has been tested.
a) Rectangular table – first and second directions
b) Rectangular table – third and fourth directions
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ISO 19682:2023(E)
c) Irregular shape table - first and second directions
d) Irregular shape table - third and fourth directions
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ISO 19682:2023(E)
e) Cantilever table – first and second directions
f) Cantilever table – third and fourth directions
g) Oval/round table – first and second directions
9
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ISO 19682:2023(E)
h) Oval/round table – third a
...
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19682
ISO/TC 136 Secretariat: UNI
Voting begins on: Voting terminates on:
2022-04-13 2022-07-06
Furniture — Tables — Test methods for the determination
of stability, strength and durability
Ameublement — Tables — Méthodes d'essai pour la détermination de la stabilité, de la résistance et de la
résistance et de la durabilité
ICS: 97.140
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
This document is circulated as received from the committee secretariat.
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 19682:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022
---------------------- Page: 1 ----------------------
ISO/TC 136
Date: 2022-02-03
ISO/DIS 19682:2022(E)
ISO/DIS 19682
Furniture — Tables — Test methods for the determination of stability,
strength and durability
Ameublement — Tables — Méthodes d'essai pour la détermination de la stabilité, de la résistance et de la résistance
et de la durabilité
DIS stage
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
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ISO/WD 19682 (E)
ISO/DIS 19682:2022(E)
Table of Contents
1 Scope. 1
2 Normative references . 1
3 Terms and definitions . 1
4 General test condition . 2
4.1 Preliminary preparations . 2
4.2 Application of forces . 3
4.3 Tolerances . 3
5 Test Equipment and Apparatus . 3
6 Test procedures – Strength and durability . 6
6.1 General . 6
6.2 Horizontal static load test . 6
6.3 Vertical static load tests . 13
6.3.1 Vertical static load on main surface . 13
6.3.2 Additional vertical static load test where the main surface has a length > 1600 mm . 14
6.3.3 Vertical static load on end extension . 15
6.4 Horizontal durability and stiffness test . 16
6.4.1 General . 16
6.4.2 Horizontal durability test . 16
6.4.3 Stiffness of the structure . 20
6.5 Vertical durability test . 23
6.6 Vertical impact test . 23
6.6.1 General . 23
6.6.2 Vertical impact test for glass table tops . 23
6.6.3 Vertical impact test for all other table tops . 23
6.7 Deflection of table tops . 24
6.8 Durability of tables with castors . 24
6.9 Drop test . 25
6.10 Table Top-to-Leg Assembly Strength . 26
7 Test procedures – Stability .29
7.1 General . 29
7.2 Stability under vertical load . 29
7.2.1 General . 29
7.2.2 Test for tables that are or can be set to a height of 950 mm or less . 30
7.2.3 Test for tables that are or can be set to a height greater than 950 mm . 30
7.3 Stability for tables with extension elements (drawers) . 31
7.4 Stability of tables designed to support a parasol . 31
7.5 Horizontal Stability Test . 32
7.6 Force Stability Test for Tall Products . 34
8 Test procedures – Height adjustment mechanism.35
8.1 General . 35
8.2 Durability of Height adjustment mechanism . 36
9 Tilting Top Table - Cycle Test .38
9.1 Test Setup . 38
9.2 Test Procedure . 38
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ISO/WD 19682 (E)
ISO/DIS 19682:2022(E)
9.3 Acceptance Level . 38
10 Tilting Top Table - Latch Strength Test . 40
10.1 Test Setup . 40
10.2 Test Procedure . 40
10.3 Acceptance Level . 40
11 Test Report Format . 42
Annex A informative Recommendations . 43
A.1 Principle . 43
A.2 General Requirements . 43
A.3 Test Level in Relations to Field of Application . 46
Annex B informative Purpose and Applicability . 47
iv © ISO 2014 – All rights reserved
© ISO 2022 – All rights reserved
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ISO/WD 19682 (E)
ISO/DIS 19682:2022(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 memb er 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 136, Furniture.
This document is intended to cancel and replace ISO 21016:2007 Office furniture – Tables and desks –
Test methods. This new document will be broader in scope beyond only Office furniture. This document
is a proposal for test methods for stability, strength and durability for table and desk furniture.
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.
Safety aspects (e.g. resistance to heat and electric shock) of electrically motorized furniture are
additionally covered by IEC 60335-2-116.
© ISO 2014 – All rights reserved v
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/WD 19682 (E)
ISO/DIS 19682:2022(E)
Introduction
Members of Technical Committee 136 for Furniture are not aware of any patent claims relating to the use
of this standard.
vi © ISO 2014 – All rights reserved
© ISO 2022 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/DIS 19682:2022(E)
WORKING DRAFT INTERNATIONAL STANDARD ISO/WD 19682
Furniture — Tables — Test methods for the determination of
stability, strength and durability
1 Scope
This International Standard specifies test methods for the determination of stability, strength and
durability of the structure of all types of tables and desks without regard to use, materials,
design/construction or manufacturing process.
Other methods for determination of the strength and durability of storage components, seating surfaces,
and other features which may be incorporated into tables are covered by other standards.
This International Standard does not apply to baby changing units.
Tests carried out according to these test methods are intended to demonstrate the ability of the item to
give satisfactory service in its intended environment. The tests have been developed for
units/components that have not been in use. However, when properly justified, they can be used for fault
investigation.
This standard does not cover test methods for the assessment of ageing, degradation, flammability or
electrical components.
This International Standard specifies test methods only. It does not specify requirements. These should
be specified in a requirements document. If this is not available, suggested loads and cycles can be found
in Annex A. It is up to the specifier to determine which tests are appropriate.
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 7170:2021, Furniture – Storage units — Test methods for the determination of strength, durability and
stability
ISO 48-4, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 4: Indentation hardness
by durometer method (Shore hardness)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain
terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
adjustable leg
table leg with more than 40 mm of vertical range (see 3.4)
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3.2
duty cycle
length of time the height adjustable table’s drive system may be operated without impairing its useful life
3.3
end extension
added surface beyond the original surface that is not directly supported by the floor and adds 200 mm or
greater to an end
3.4
levelling device
device whose primary function is to keep the table top horizontal e.g. adjustable feet or similar with a
limitation of 40 mm of vertical range (see 3.1)
3.5
main surface
all surfaces that are not a shelf
3.6
safety glass
glass with additional features that make it less likely to break, or less likely to pose a threat when broken
3.7
secondary surface
surface such as a shelf that is vertically separated from, and smaller than, the main surface(s) and used
for storage or occupied exclusively by the equipment placed on the surface
3.8
structure
load bearing parts of furniture such as the frame, top and legs
3.9
type 1 tables
tables having a main surface 600 mm or more above the floor surface and a surface area greater than 0,50
square meters
3.10
type 2 tables
all tables that do not meet the definition of Type 1 tables
4 General test condition
4.1 Preliminary preparations
The furniture shall be tested as delivered. Knock-down furniture shall be assembled according to the
instructions supplied with it. If the instructions allow the furniture to be assembled or combined in
different ways, the most adverse combination shall be used for each test. Knock-down fittings shall be
tightened before testing. Further tightening shall not take place unless specifically required by the
manufacturer.
During testing, the unit shall be placed on the floor and leveled, unless otherwise specified. Levelling
devices shall be set to the mid position but not more than 13 mm from fully closed.
Products with adjustable features shall be set at their most adverse position for testing unless otherwise
specified.
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Unless otherwise specified by the manufacturer, the sample for test shall be stored in indoor ambient
conditions for at least 24 h immediately prior to testing. The tests shall be carried out at indoor ambient
conditions but if during a test the temperature is outside the range 15 °C to 27 °C the maximum and/or
minimum temperature shall be recorded in the tes t report. The test for deflection of table tops (see 6.7),
except those made from metal, glass and stone, shall be carried out at a relative humidity of 45 % to 55
%. If during a test the relative humidity is outside of the range of 45 % to 55 %, the maximum and/or
minimum humidity shall be recorded in the test report.
If a test cannot be carried out as specified, e.g. because a loading pad cannot be used for the application
of a force due to the design of a product, the test shall be carried out as closely as possible to that specified.
Any modification t o the test method shall be technically justified and shall be recorded in the test report.
Before beginning the testing, visually inspect the unit thoroughly. Record any defects so that they are not
assumed to have been caused by the tests. Carry out measurements, if specified.
It is not necessary that all tests be carried out on the same unit, but all tests specified for a particular
component shall be carried out on the same component.
4.2 Application of forces
The test forces in durability and static load tests shall be applied sufficiently slowly to ensure that
negligible dynamic load is applied. Unless otherwise specified, each specified force shall be maintained
for not less than 10 s and not more than 15 s. The forces in durability tests shall be applied sufficiently
slowly to ensure that kinetic heating does not occur. Unless otherwise stated, durability loads shall be
maintained for (2 ± 1) s.
Forces shall be applied in a manner which ensures normal functioning of self-closing and damping
mechanisms.
The forces may be replaced by masses. The relationship 10 N = 1 kg shall be used.
4.3 Tolerances
Unless otherwise stated, the following tolerances are applicable to the test equipment:
Forces: ± 5 % of the nominal force;
Velocities: ± 5 % of the nominal velocity;
Masses: ± 1 % of the nominal mass;
Dimensions: ± 1 mm of the nominal dimension; except loading pads ± 5 mm of the nominal dimension.
For dimensions greater than 200 mm, the tolerance shall be ± 0,5% of the dimension.
Angles: ± 2o of the nominal angle.
The accuracy for the positioning of loading pads and impact plates shall be ± 5 mm.
Test weights, forces, dimensions, angles, times, rates and velocities used to perform the tests shall be
targeted at the nominal values specified.
NOTE For the purposes of uncertainty measurement, test results are not considered to be adversely affected
when the above tolerances are met.
5 Test Equipment and Apparatus
Unless otherwise stated, the tests may be applied by any suitable device because the results are not
dependent upon the apparatus, except in the case of impact tests where the apparatus described in 5.1
shall be used.
The equipment shall not inhibit deformation nor cause unnatural deformation of the unit/component, i.e.
it shall be able to move so that it can follow the deformation of the unit/component during testing.
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With the exception of the horizontal static, durability and stiffness tests, described in 6.2 and 6.4, all
loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot
point shall be as close as practically possible to the load surface.
Loading pads for the horizontal static, durability and stiffness tests, described in 6.2 and 6.4, shall not
pivot.
With the exception of the horizontal static, durability and stiffness tests described in 6.2 and 6.4, if a
loading pad tends to slide, use a slip resistant material between the loading pad and the surface being
tested.
5.1 Vertical impactor, as shown in Figure 1 and comprised of the following:
5.1.1 Circular body, 200 mm in diameter separated from the striking surface by helical compression
springs and free to move relative to it on a line perpendicular to the plane of the central area of the
striking surface.
The body and associated parts minus the springs shall have a mass of (17 ± 0,1) kg and the whole
apparatus, including mass, springs and striking surface, shall have a mass of (25 ± 0,1) kg.
5.1.1 Springs, which shall be such that the nominal spring rate of the combined spring system is (7 ± 2)
N/mm and the total friction resistance of the moving parts is less than 1 N.
The spring system shall be compressed to an initial load of (1 040 ± 5) N (measured statically) and the
amount of spring compression movement available from the initial compression point to the point where
the springs become fully closed shall be not less than 60 mm.
5.1.2 Striking surface, which shall be a rigid circular object, 200 mm in diameter, the face of which has
a convex spherical curvature of 300 mm radius with a 12 mm front edge radius.
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Key
1 joint of lifting device not inhibiting free fall
Figure 1 — Vertical impactor
5.2 Floor, horizontal, flat and rigid with a smooth surface.
For the drop test (6.9) the floor shall be faced with a 2 mm thick layer of rubber with a hardness of 85
±15 IRHD according to ISO 48-4.
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5.3 Stops, to prevent the article from sliding but not tilting, no higher than 12 mm except in cases where
the design of the item necessitates the use of higher stops.
5.4 Loading pad, a rigid cylindrical object, 100 mm in diameter, with a flat, smooth face and a 12 mm
edge radius.
3
5.5 Foam, 25 mm thick layer of flexible foam with a bulk density of (120 ±25) kg/m .
5.6 Steel test tube, (18 ±1,5) mm in diameter and (1,5 ±0,5) mm in wall thickness with a length such that
a force can be applied at a distance of 2 200 mm above the floor.
5.7 Test surface for castor durability test, horizontal, flat smooth and rigid steel surface.
5.8 Obstacles for castor durability test, steel strips 50 mm wide and 3,2 mm high with the top edges
having a radius of 3,2 mm, 500 mm apart and parallel on the floor surface and perpendicular to the test
direction.
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5.9 Test foam for glass - a foam sheet with a thickness of 100 mm, a bulk density of (35 ± 5) kg/m and
an indentation hardness index of (170 ± 40) N HA (40 %/30 s) in accordance with EN ISO 2439.
6 Test procedures – Strength and durability
6.1 General
Unless otherwise specified, the tests shall be carried out in the configuration most likely to cause failure.
NOTE There may be multiple configurations likely to cause failure. Multiple test configurations may be
required.
Where the table top can be extended or enlarged, then the extended configuration shall be considered
most likely to cause failure and tested as extended unless specified otherwise. In this case, the extended
configuration is considered to be the main surface except for end extensions.
If a test cannot be carried out as specified, the test shall be carried out as closely as possible to that
specified. Any modification to the test method shall be technically justified and shall be recorded in the
test report.
If a table has storage components (secondary surfaces), then all the applicable tests in this standard shall
be conducted, unless specified otherwise, by using the loads per Table 1 of ISO 7170:2021 Furniture –
Storage units – Test methods for the determination of strength, durability and stability.
6.2 Horizontal static load test
Position the table on the test surface, in its normal position of use without extending end extensions.
Height adjustable tables shall be set to their highest position, but not to exceed 950 mm. Restrain the base
of the table by stops placed in all directions at the opposite end to that at which the horizontal test force
is first to be applied.
Apply a 50 kg mass to an area of (300 ± 50) mm x (300 ± 50) mm, or a diameter of (300 ± 50) mm, to the
approximate centre of the table top. See figure 2 for recommended examples of load placement.
NOTE For Type 2 tables, apply the 50 kg mass or manufacturers recommended maximum but no less than 25
kg.
For vertical flat edge tops (no profile-edge), apply the specified horizontal force by means of a loading
pad (5.4) centred within 10 mm of the table top level (see figure 3) in a direction perpendicular to a line
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joining the two legs/supports, midway between the legs/supports of the side of the applied force. See
Figures 2a, 2c, 2e, 2g and 2i. For tops without a vertical edge (profile-edge), apply the load with the
loading pad centred at the outermost edge even if more than 10 mm from the top (see Figure 3).
If the table top is not secured to the understructure and the top moves when the specified force is applied,
reduce the force sufficiently to just prevent movement. Record the force applied. The applied force shall
not be reduced below the specified minimum for ce.
If the unrestrained portion of the base lifts when the specified force is applied, reduce the force
sufficiently to just prevent lifting. Record the force applied. The applied force shall not be reduced below
the specified minimum force. If unrestrained portion of the base lifts at this force, the specified mass
applied to the table top shall be increased gradually until this tendency ceases.
Leaving the stops in position, use the same procedure to determine the force to be applied in the opposite
direction.
One application of the force in each direction represents one cycle. Repeat the load application for a total
of 10 cycles.
Repeat the test method applying the specified horizontal force at the work top level along the line joining
the two legs/supports. See Figures 2b, 2d, 2f, 2h and 2j.
Apply the same force in the opposite direction.
One application of the force in each direction represents one cycle. Repeat the load application for a total
of 10 cycles.
Repeat this procedure until each unique leg design/construction has been tested.
a) Rectangular table – first and second directions
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