Furniture - Seating - Determination of stability

This document specifies test methods and requirements for the determination of the stability of all types of seating for adults weighing up to 110 kg, without regard to use, materials, design/construction or manufacturing process.
The test methods described can be used for seating for children and heavier adults by modifying test loads and loading points.
This document does not apply to children’s highchairs, table mounted chairs and bath seats which are covered by other European Standards.

Möbel - Sitzmöbel - Bestimmung der Standsicherheit

Dieses Dokument legt Anforderungen und Prüfverfahren zur Bestimmung der Standsicherheit für alle Arten von Sitzmöbeln für Erwachsene mit einem Gewicht von bis zu 110 kg ohne Rücksicht auf Gebrauch, Materialien, Design/Bauart oder Fertigungsprozess fest.
Die beschriebenen Prüfverfahren können durch Abänderung der Prüflasten und Belastungspunkte auf Sitzmöbel für Kinder und schwerere Erwachsene angewendet werden.
Dieses Dokument gilt nicht für Kinderhochstühle, Tischhängesitze und Badesitze, die durch andere Europäische Normen abgedeckt werden.

Mobilier - Sièges - Détermination de la stabilité

La présente Norme européenne spécifie les méthodes d’essai et les exigences pour la détermination de la stabilité de tous les types de sièges destinés à être utilisés par des adultes jusqu’à 110 kg, indépendamment de leur utilisation, de la nature des matériaux, de la conception/construction ou du procédé de fabrication.
Les méthodes d’essai décrites peuvent être utilisées pour les sièges destinés aux enfants et ceux destinés aux adultes plus lourds en modifiant les charges d’essai et les points de charge.
La présente Norme européenne ne s’applique pas aux chaises hautes pour enfants, aux sièges de table, ni aux sièges de bain qui sont couverts par d’autres Normes européennes.

Pohištvo - Sedežno pohištvo - Ugotavljanje stabilnosti

Ta evropski standard določa preskusne metode in zahteve za ugotavljanje stabilnosti vseh vrst domačih sedežev za odrasle.

General Information

Status
Published
Publication Date
13-Nov-2018
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
14-Nov-2018
Completion Date
14-Nov-2018

RELATIONS

Buy Standard

Standard
EN 1022:2019
English language
39 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Pohištvo - Sedežno pohištvo - Ugotavljanje stabilnostiMöbel - Sitzmöbel - Bestimmung der StandsicherheitMobilier domestique - Sièges - Détermination de la stabilitéFurniture - Seating - Determination of stability97.140PohištvoFurnitureICS:Ta slovenski standard je istoveten z:EN 1022:2018SIST EN 1022:2019en,fr,de01-april-2019SIST EN 1022:2019SLOVENSKI

STANDARDSIST EN 1022:20061DGRPHãþD
SIST EN 1022:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1022
November
t r s z ICS
{ yä s v r Supersedes EN
s r t tã t r r wEnglish Version

Furniture æ Seating æ Determination of stability Mobilier æ Sièges æ Détermination de la stabilité

Möbel æ Sitzmöbel æ Bestimmung der Standsicherheit This European Standard was approved by CEN on

s July
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s r t tã t r s z ESIST EN 1022:2019
EN 1022:2018 (E) 2 Contents

Page European foreword ....................................................................................................................................................... 4 1 Scope .................................................................................................................................................................... 5 2 Normative references .................................................................................................................................... 5 3 Terms and definitions ................................................................................................................................... 5 4 General test conditions ................................................................................................................................. 7 4.1 General ................................................................................................................................................................ 7 4.2 Application of forces ...................................................................................................................................... 8 4.3 Tolerances ......................................................................................................................................................... 8 5 Test equipment ................................................................................................................................................ 8 5.1 General ................................................................................................................................................................ 8 5.2 Loading point template ................................................................................................................................. 8 5.3 Floor .................................................................................................................................................................. 10 5.4 Stops .................................................................................................................................................................. 10 5.5 Stability loading pad ................................................................................................................................... 10 5.6 Stability loading device .............................................................................................................................. 11 5.7 Loading discs.................................................................................................................................................. 13 5.8 Support apparatus ....................................................................................................................................... 13 5.9 Support for tests for reclining back rests ............................................................................................ 13 5.10 Local loading pad ......................................................................................................................................... 13 5.11 Seat loading pad ............................................................................................................................................ 13 6 Determination of seat and back loading points ................................................................................ 14 6.1 Swivelling seats ............................................................................................................................................. 14 6.1.1 Seat loading point “A” ................................................................................................................................. 14 6.1.2 Back loading point “B” ................................................................................................................................ 15 6.2 All other seating ............................................................................................................................................ 15 6.2.1 General ............................................................................................................................................................. 15 6.2.2 Seating with a back rest ............................................................................................................................. 15 6.2.3 Seating without a back rest ...................................................................................................................... 15 6.3 Loungers .......................................................................................................................................................... 17 6.4 Determination of height of seat loading point ................................................................................... 17 7 Test methods for assessing stability of all seating except loungers .......................................... 17 7.1 General ............................................................................................................................................................. 17 7.2 Requirements ................................................................................................................................................ 18 7.3 Test procedures, all seating ..................................................................................................................... 18 7.3.1 Forwards overturning ................................................................................................................................ 18 7.3.2 Forwards overturning for seating with foot rest .............................................................................. 21 7.3.3 Corner stability test ..................................................................................................................................... 21 7.3.4 Sideways overturning, all seating without arm rests ..................................................................... 23 7.3.5 Sideways overturning, all other seating .............................................................................................. 24 7.3.6 Rearwards overturning all seating with back rests ........................................................................ 26 7.4 Additional test procedures for seating with reclining back rests .............................................. 27 7.4.1 General ............................................................................................................................................................. 27 7.4.2 Tilting seating ................................................................................................................................................ 27 7.4.3 Reclining seating with leg rest ................................................................................................................ 28 7.4.4 Reclining seating without leg rest .......................................................................................................... 30 7.4.5 Rearwards stability test for rocking chairs ........................................................................................ 31 SIST EN 1022:2019

EN 1022:2018 (E) 3 8 Loungers .......................................................................................................................................................... 32 8.1 General ............................................................................................................................................................. 32 8.2 Requirements ................................................................................................................................................. 33 8.3 Test procedures ............................................................................................................................................ 33 8.3.1 Forwards overturning................................................................................................................................. 33 8.3.2 Sideways overturning ................................................................................................................................. 33 9 Test report ...................................................................................................................................................... 34 Annex A (normative)

Seat loading pad data ..................................................................................................... 35 Annex B (normative)

Test parameters .............................................................................................................. 38 B.1 All seating other than loungers ............................................................................................................... 38 B.2 Loungers .......................................................................................................................................................... 39

SIST EN 1022:2019

EN 1022:2018 (E) 4 European foreword This document (EN 1022:2018) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2019, and conflicting national standards shall be withdrawn at the latest by May 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1022:2005. The main changes with respect to the previous edition are listed below: — The title and scope of the document has been changed to include seating for all uses. — All test methods for assessing the stability of seating used in European Standards for furniture have been collated in one document. The document now contains methods that were previously listed in EN 1022, EN 581-2, Outdoor furniture and EN 1335-3, Office Work Chairs. — Test methods for assessing the stability of office work chairs and all other seating have been harmonised. — A test method for assessing corner stability has been introduced for all types of chair. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

SIST EN 1022:2019

EN 1022:2018 (E) 5 1 Scope This document specifies test methods and requirements for the determination of the stability of all types of seating for adults weighing up to 110 kg, without regard to use, materials, design/construction or manufacturing process. The test methods described can be used for seating for children and heavier adults by modifying test loads and loading points. This document does not apply to children’s highchairs, table mounted chairs and bath seats which are covered by other European Standards. 2 Normative references There are no normative references in this document. 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 arm rest part of the seating able to support the arms of the user when seated, 100 mm or higher above the height of the seat loading point 3.2 back rest element that supports the back of the user higher than 100 mm above the height of the seat loading point 3.3 foot rest part intended to support the feet of the user which assists the user getting on or off an item of seating Note 1 to entry: A foot rest can or cannot be permanently attached to the structure of the item of seating. 3.4 leg rest extension of the seat area intended to support the legs of the user Note 1 to entry: A leg rest can or cannot be permanently attached to the structure of the item of seating, and may not be suitable for use as an item of seating itself. 3.5 load bearing structure load bearing parts of the item of seating such as the frame, seat, back and arm supports and suspension 3.6 lounger item of seating intended for reclined posture with at least one back rest position such that back rest angle is 45 degrees or less to the horizontal, and a leg rest which is an integral part of the product and intended to support the full body weight of a user SIST EN 1022:2019

EN 1022:2018 (E) 6 Note 1 to entry: See Figure 1.
Key

back rest angle Figure 1 — Example of Lounger 3.7 median plane vertical plane running from front to rear through the centre of the seat, dividing the item of seating into two parts Note 1 to entry: In most instances the two parts are symmetrical. Note 2 to entry: See Figure 2. 3.8 overturning when an item of seating pivots to a position beyond which the item continues to fall 3.9 raised side edge side edge of the item of seating, higher than 50 mm above the height of the seat loading point 3.10 stability ability to withstand forces that tend to cause the loaded seating to overturn 3.11 supporting point foot of a leg, castor or glide 3.12 swivelling seat item of seating, whose upper part, which includes the seat and back, is supported on a single column and can rotate in the horizontal plane 3.13 transverse plane vertical plane perpendicular to the median plane passing through the seat loading point Note 1 to entry: See Figure 2. SIST EN 1022:2019

EN 1022:2018 (E) 7

Key 1 transverse plane 2 median plane A seat loading point Figure 2 — Transverse and median plane 3.14 work chair swivelling chair, with or without arm rests, for use by one adult in the office, whose upper part, which includes the seat and back is supported on a single column and can rotate in the horizontal plane and is at least adjustable in height 4 General test conditions 4.1 General The furniture shall be tested as delivered. Knock-down furniture shall be assembled according to the instructions supplied with it. Knock-down fittings shall be tightened before testing. If the furniture can be assembled or combined in different ways, the most adverse configuration shall be used for each test. 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 25 °C the maximum and/or minimum temperature shall be recorded in the test report. SIST EN 1022:2019

EN 1022:2018 (E) 8 4.2 Application of forces The test forces shall be applied sufficiently slowly to ensure that negligible dynamic load is applied. Unless otherwise stated, overturning forces shall be maintained for (5 ± 2) s. For rearwards stability tests defined in 7.4.2, 7.4.3, and 7.4.4, the loading discs shall be maintained in position for (120 ± 60) s. 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: — forces: ± 5 % of the nominal force; — masses: ± 1 % of the nominal mass; — dimensions: all dimensions less than 300 mm shall have a tolerance of ± 1 mm of the nominal dimension, all other dimensions shall have a tolerance of ± 0,5 % of the nominal dimension; — angles: ± 2° of the nominal angle. The accuracy for the positioning of loading pads shall be ± 5 mm. 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 5.1 General 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. All loading pads shall be capable of pivoting in relation to the direction of the applied force. The pivot point shall be as close as practically possible to the load surface. If a loading pad tends to slide use a slip resistant material between the loading device and the item of seating. The tests may be applied by any suitable device because results are dependent only upon correctly applied forces and not upon the apparatus. 5.2 Loading point template Consisting of two shaped members (see Figure 3) fastened together by a pivot at one end. The contours of the shaped surfaces are so devised as to sink into the upholstery. For this purpose the loading point template, with an additional mass applied at the seat loading point, shall be 1020kg+. The apparatus is marked as shown in Figure 4.

SIST EN 1022:2019
EN 1022:2018 (E) 9 Dimensions in millimetres

Scale: 1 square = 20 mm Key 1 top 6 seat portion 2 rear 7 front 3 back portion 8 bottom 4 seat load A seat loading point (all seating except stools) 5 back load B back loading point (all seating except stools) Figure 3 — Loading surface curves for seat and back loading point template SIST EN 1022:2019

EN 1022:2018 (E) 10 Dimensions in millimetres

Key 1 typical section 2 mark to fix 90° 3 straight edge for the determination of seat or back inclination A seat loading point (all seating except stools) B back loading point (all seating except stools) C seat loading point (stools) Figure 4 — Loading point template So that the template can be positioned easily with the two members at 90° to each other, a line is drawn on the back portion. 5.3 Floor Horizontal, flat and rigid with a smooth surface. 5.4 Stops Unless otherwise stated, stops shall be of the minimum height required to prevent sliding and shall not inhibit overturning. 5.5 Stability loading pad A loading pad as shown in Figure 5. The circular pad may be made of any suitable material (e.g. plastic or wood). The extension piece shall be made of aluminium. Where it is not possible to use the pad with extension piece, a stability loading pad without the extension piece may be used. SIST EN 1022:2019

EN 1022:2018 (E) 11 Dimensions in millimetres

Key a grip material on a 300 mm R surface, recessed into a groove so that only the gripper teeth protrude. The carpet gripper placement shown is one example, other configurations are acceptable Figure 5 — Stability loading pad 5.6 Stability loading device A loading device in principle functioning as shown in Figure 6. SIST EN 1022:2019

EN 1022:2018 (E) 12

Key a hold down strap b centre line of seat c for details see Figure 5 d for details see Figure 7 Figure 6 — Stability loading device – principle Dimensions in millimetres

Key 1 sufficient to clear all foam and fabric and allow for set back 2 height of loading point F2 horizontal outwards 3 centre line/centre of gravity of weight 4 rod with spherical tip 5 load X enlarged detail of rod with spherical tip Figure 7 — Example of front and side stability loading fixture SIST EN 1022:2019

EN 1022:2018 (E) 13 5.7 Loading discs Discs with a mass of 10 kg each, with a diameter of 350 mm and a thickness of 48 mm. The centre of gravity shall be the centre of the disc. The surface friction of the disc (disc to disc) shall be such that the force to initiate movement shall be 31 N ± 9 N. 5.8 Support apparatus An apparatus to support the main stack of the loading discs in reclining seating tests. It shall be as light as possible and not heavier than 2,5 kg. Figure 8 shows a basic design. Dimensions in millimetres

Key 1 height adjustable support bars 2 pivot point Figure 8 — Support apparatus 5.9 Support for tests for reclining back rests Polypropylene sheet 1,5 mm ± 0,15 mm thick, 360 mm ± 10 mm wide and 700 mm ± 15 mm high. 5.10 Local loading pad Rigid cylindrical object 100 mm in diameter, with a flat face and a 12 mm edge radius. 5.11 Seat loading pad Naturalistically shaped rigid indenter with a hard, smooth surface having overall dimensions within the limits shown in Figure 9. For details of design see Annex A. SIST EN 1022:2019

EN 1022:2018 (E) 14 Dimensions in millimetres

Key 1 seat loading point Figure 9 — Seat loading pad – Overall dimensions 6 Determination of seat and back loading points 6.1 Swivelling seats 6.1.1 Seat loading point “A” The point in which the swivelling seat's axis of rotation intersects with the seat surface with the seat in a position as close as possible to the horizontal. SIST EN 1022:2019

EN 1022:2018 (E) 15 6.1.2 Back loading point “B” The point on the centre line of the back rest, 300 mm above loading point “A” (6.1.1) measured when the seat is loaded with 640 N through the seat loading pad (5.11). 6.2 All other seating 6.2.1 General The seat and back loading points shall be determined using the template as specified in 5.2 in the manner specified in 6.2.2 or 6.2.3. In some cases it may not be possible to determine the loading points by means of the template. In such cases the seat loading point (A) shall be 175 mm forward of the seat/back junction, or at the point closest to this that allows the seat load to be applied. The back loading point (B) shall be a point 300 mm upward from the seat/back junction. Where the geometry of the back rest does not allow the back force to be applied at the point defined by the above method the force shall be applied at the nearest point (up or down the back) and the bending moment (back force, N x floor to back loading point distance, m) shall remain constant. If the number of seats in the item is not obvious, divide the total seat length (in mm) by 600 mm and round to the nearest whole number to determine the number of seats. Divide the total seat length into seats of equal length. 6.2.2 Seating with a back rest For seating with adjustable back rests, set the back rest to its most upright position. Adjust the template such that the angle between the seat and back portions is 90°. For upholstered and flexible seating position the loaded template (5.2) on the centre line of the seat as far towards the rear as possible, without applying force to the back rest. Adjust the position of the template by pushing the back loading portion into the back of the seating so that it is in contact with the back rest, allowing the shape of the seat portion of the template to correlate with that of the seat (see Figure 10a)). For rigid seating position the unloaded template (5.2) on the centre line of the seat as far towards the rear as possible without applying force to the back rest. Adjust the position of the template by pushing the back loading portion into the back so that it is in contact with the back rest and apply the specified load to the template. Where possible ensure that point A on the template is in contact with the seating surface (see Figure 10b)). Where this is not possible ensure the top of the horizontal part of the seat loading template is as close to horizontal as possible. In cases where the template can be settled in more than one position, the position having the smallest angle between the seat and back portions of the template shall be used. The angle shall in no cases be less than 90°. Mark the required seat loading point (A), and back loading point (B) from the template. If relevant repeat the procedures on the other seat(s). Where the geometry of the back rest does not allow the back force to be applied at the point defined by the above method the force shall be applied at the nearest point (up or down the back) and the bending moment (back force, N x floor to back loading point distance, m) shall remain constant. 6.2.3 Seating without a back rest Set up the template (5.2) at 90° as shown in Figure 4. Place it on each seating position as shown in Figure 10c). Mark the seat loading point (A) with the aid of the mark C from the template. SIST EN 1022:2019

EN 1022:2018 (E) 16
a) Upholstered/flexible seating with a back
b) Rigid seating with a back SIST EN 1022:2019
EN 1022:2018 (E) 17

c) Seating without a back/stools Key 1 front of stool A seat loading point – seating with back rests B back loading point C seat loading point – seating without back rests Figure 10 — Determination of seat and back loading point 6.3 Loungers Seat and back loading points shall be determined using the procedure defined in 6.2. 6.4 Determination of height of seat loading point Place the seat loading pad (5.11) on the seat loading point (A) and apply a force of 600 N. The height of the seat loading point is the distance from the floor to the seating surface at the seat loading point (A). NOTE The mass of the loading pad can be considered when applying the force. 7 Test methods for assessing stability of all seating except loungers 7.1 General The stability tests defined in Clause 6 are not applicable to seating which has both the height of the seat loading point (6.4) < 200 mm and a mass < 5 kg. Position the seating on the floor (5.3) with its components as specified in Table 1. SIST EN 1022:2019

EN 1022:2018 (E) 18 Table 1 — Positioning of seating components Clause Test Seat height Seat Back rest in height Back rest position Tilt stiffness adjustment Castors and base Arm rest Foot rest Leg rest 7.3.1 Forwards overturning highest position foremost position highest position most upright position maximum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.3.2 Forwards overturning for seating with foot rest highest position foremost position most onerous position most upright position maximum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.3.3 Corner stability test highest position foremost position most onerous position most upright position maximum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.3.4 Sideways overturning, all seating without arm rests highest position foremost position highest position most upright position maximum tension most likely to cause overturning — most likely to cause overturning most likely to cause overturning 7.3.5 Sideways overturning, all other seating highest position foremost position highest position most upright position maximum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.3.6 Rearwards overturning, all seating with back rests highest position rearmost position highest position most reclined position minimum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.4 Additional test procedures for seating with reclining back rests highest position rearmost position highest position most reclined position minimum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.2 Requirements When tested according to 7.3 and 7.4, the seating shall not overturn. Where loads are not specified in other standards the requirements contained in Table B.1 shall be used. 7.3 Test procedures, all seating 7.3.1 Forwards overturning Position the seating on the floor surface (5.3) with two adjacent supporting points on the fron

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.