1、BSI Standards PublicationBS EN 1728:2012Furniture Seating Testmethods for the determinationof strength and durabilityBS EN 1728:2012Incorporating corrigendum July 2013BS EN 1728:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1728:2012, incorporating corrig
2、endum July 2013. It supersedes BS EN 1728:2001 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee FW/0, Furniture, to Subcommittee FW/0/1, Common Test Methods for Furniture.A list of organizations represented on this subcommittee can be obtained on reques
3、t to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 83319 9ICS 97.140Compliance with a British Stan
4、dard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2012.Amendments/corrigenda issued since publicationDate Text affected31 August 2013 Implementation of CEN corrigendum July 2013: T
5、ables 1 and 2 updatedBS EN 1728:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1728 July 2012 ICS 97.140 Supersedes EN 1728:2000English Version Furniture - Seating - Test methods for the determination of strength and durability Ameublement - Siges - Mthodes dessais pour la dtermination de
6、la rsistance et de la durabilit Mbel - Sitzmbel - Prfverfahren zur Bestimmung der Festigkeit und Dauerhaltbarkeit This European Standard was approved by CEN on 9 June 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe
7、an Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions
8、(English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belg
9、ium, 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, Slovakia, Slovenia, Spain, Sweden, Switze
10、rland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Re
11、f. No. EN 1728:2012: EIncorporating corrigendum July 2013BS EN 1728:2012EN 1728:2012 (E) 2 Contents Page 1 Scope 52 Normative references 53 Terms and definitions .54 General test conditions .64.1 Preliminary preparation 64.2 Application of forces .64.3 Tolerances 66 Test procedures - Chairs other th
12、an Work Chairs 166.1 General . 166.2 Determination of seat and back loading points . 176.2.1 General . 176.2.2 Seating with a back rest . 176.2.3 Seating without a back rest . 176.3 Determination of Back Angle . 196.4 Seat static load and back static load test 206.5 Seat Front Edge Static Load 226.6
13、 Vertical load on back rests 226.7 Horizontal forward static load test on back rests . 236.8 Foot rest static load test 236.9 Leg rest static load test 236.10 Arm rest sideways static load test 246.11 Arm rest downwards static load test 246.12 Headrest static load test 256.13 Vertical upwards static
14、 load on arm rests . 266.13.1 Seating which may be moved when occupied 266.13.2 Stacking seating . 266.14 Vertical static load on auxiliary writing surfaces 266.15 Leg forward static load test . 266.16 Leg sideways static load test 276.17 Combined seat and back durability test . 286.18 Seat front ed
15、ge durability test . 306.19 Durability test on seating with a multi-position back rest 316.20 Arm rest durability test 316.21 Foot rest durability test 316.22 Auxiliary writing surfaces durability test . 326.23 Tipping seat operation . 326.24 Seat impact test 326.25 Back impact test . 336.26 Arm res
16、t impact test . 346.27 Drop tests 356.27.1 Drop test for multiple seat units 356.27.2 Drop test for stacking seating . 366.27.3 Drop test from the height of a table 376.28 Backward fall test . 386.29 Castor and chair base durability . 386.30 Rolling resistance of the unloaded chair . 397 Test proced
17、ures - Work Chairs . 39BS EN 1728:2012EN 1728:2012 (E) 3 7.1 General . 397.2 Loading points . 407.2.1 General . 407.2.2 Loading point A . 407.2.3 Loading point B . 407.2.4 Loading point C . 417.2.5 Loading point D . 417.2.6 Loading point E . 417.2.7 Loading point F 417.2.8 Loading point G . 427.2.9
18、Loading point H . 427.2.10 Loading point J 427.3 Combined seat and back static load test 427.4 Seat front edge static load test 437.5 Arm rest downward static load test central . 437.6 Arm rest downward static load test front 447.7 Arm rest sideways static load test 457.8 Foot rest static load test
19、. 457.9 Seat and back durability . 457.10 Arm rest durability . 467.11 Swivel test 467.12 Foot rest durability 467.13 Castor and chair base durability 467.14 Rolling resistance of the unloaded chair 478 Test procedures Loungers 478.1 General . 478.2 Seat and back static load test 478.3 Additional se
20、at and leg rest static load test . 478.4 Seat and back durability test 488.4.1 Seat and back durability test procedure . 488.4.2 Additional seat durability test procedure . 498.5 Durability test on back rest mechanism . 508.6 Arm rest downwards static load test . 508.7 Arm rest durability test . 508
21、.8 Impact test 508.9 Lifting test for mobile loungers . 52Annex A (normative) Seat loading pad data 54Annex B (informative) Arm rest loading pad details . 57BS EN 1728:2012EN 1728:2012 (E) 4 Foreword This document (EN 1728:2012) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the se
22、cretariat 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 January 2013, and conflicting national standards shall be withdrawn at the latest by January 2013. Attention is d
23、rawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1728:2000. The main changes with respect to the previous edition are lis
24、ted below. All test methods for seating used in European Standards for furniture have been collated in one document. The document now contains methods that were previously listed in EN 581-2, Outdoor furniture, EN 1335-3, Office work chair, and EN 15373, Non-domestic seating. A static load test for
25、headrests has been included. Wherever possible test methods have been simplified and clarified for ease of use. 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
26、, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
27、 and the United Kingdom. BS EN 1728:2012EN 1728:2012 (E) 5 1 Scope This European Standard specifies test methods for the determination of strength and durability of the structure of all types of seating without regard to use, materials, design/construction or manufacturing process. This European Sta
28、ndard does not apply to childrens highchairs, table mounted chairs and bath seats which are covered by other European Standards. Test methods for the assessment of ageing, degradation, ergonomics and electrical functions are not included. The test methods are not intended to assess the durability of
29、 upholstery materials, such as upholstery filling materials and upholstery covers. This European Standard does not include any requirements. Requirements for different end uses can be found in other Standards. 2 Normative references The following documents, in whole or in part, are normatively refer
30、enced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7619-2:2010, Rubber, vulcanized or thermoplastic Determination of inde
31、ntation hardness Part 2: IRHD pocket meter method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 structure load bearing parts of furniture such as the frame, seat, back and arm supports and suspension 3.2 leg rest extension of the seat area
32、intended to support the legs of the user Note 1 to entry: A leg rest might or might not be permanently attached to the structure of the item of seating. 3.3 foot rest part intended to support the feet of the user and which assists the user getting on or off an item of seating Note 1 to entry: A foot
33、 rest might or might not be permanently attached to the structure of the item of seating. 3.4 work chair chair, with or without arm rests, for use by one adult in the office or home office (for example working with a computer), whose upper part, which includes the seat and back, is supported on a si
34、ngle column and can rotate in the horizontal plane and is at least adjustable in height BS EN 1728:2012EN 1728:2012 (E) 6 3.5 back rest element that supports the back of the user higher than 100 mm above the seat loading point 3.6 arm rest length distance between vertical lines through the front and
35、 rear edges of the arm rest 4 General test conditions 4.1 Preliminary preparation The furniture shall be tested as delivered. Knock-down furniture shall be assembled according to the instructions supplied. If the instructions allow the furniture to be assembled or combined in different ways, the mos
36、t 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. For seating that is designed to be fixed to the structure of a building, the unit shall be mounted accor
37、ding to the manufacturers instructions to a structure representative of the service installation. This structure shall be sufficiently strong and stiff to eliminate the possibility of it affecting the results of the test. Unless otherwise specified by the manufacturer, the sample for test shall be s
38、tored in indoor ambient conditions for at least 24 h immediately prior to testing. The tests shall be carried out at indoor ambient conditions. However, if during a test the temperature is outside the range 15C to 25C, the maximum and/or minimum temperature shall be recorded in the test report. 4.2
39、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. The forces in durability tests shall be applied sufficiently slowly to ensure that kinetic heating does not occur. Unless otherwise stated
40、, static forces shall be maintained for (10 2) s. Unless otherwise stated, durability forces shall be maintained for (2 1) 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 to the test
41、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; Angles: 2oof the nominal angle. BS EN 1728:2012EN 1728:2012 (E) 7 The accuracy for the positioning of loading pads and impact plates shall
42、 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 and apparatus The equipment shall not inhibit deformation nor cause unnatural deformation of the unit/component, i.e. it shall be a
43、ble 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
44、 a slip resistant material between the loading pad and the foam for loading pads (5.8). The tests may be applied to any suitable device because results are dependent only upon correctly applied forces and not upon the apparatus. Exceptions include cases of impact tests where the apparatus described
45、in 5.9 and 5.10 shall be used and the arm rest durability test where the apparatus described in 5.11 shall be used. 5.1 Loading point template, consisting of two shaped members (see Figure 1) fastened together by a pivot at one end. The contours of the shaped surfaces are so devised as to sink into
46、the upholstery. For this purpose, the loading point template, with an additional mass applied at the seat loading point, shall be 20 kg +1 kg, - 0 kg. The apparatus is marked as shown in Figure 2. BS EN 1728:2012EN 1728:2012 (E) 8 Scale: 1 square = 20 mm Key 1 Top 4 Seat load 7 Front 2 Rear 5 Back l
47、oad 8 Bottom 3 Back portion 6 Seat portion Figure 1 Loading surface curves for seat and back loading point template BS EN 1728:2012EN 1728:2012 (E) 9 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 load (chairs
48、) B Back load (chairs) C Seat load (stools) Figure 2 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. 5.2 Floor, which is horizontal, flat and rigid with a smooth surface. For the back and arm rest imp
49、act tests (6.25 and 6.26), the drop (6.27) and the backwards fall test (6.28), the floor shall be faced with a 2 mm thick layer of rubber with a tests hardness of (85 10) IRHD according to ISO 7619-2:2010. 5.3 Stops. BS EN 1728:2012EN 1728:2012 (E) 10 Stops are used to prevent the item from sliding but not tilting no higher than 12 mm, except in
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