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BS EN 1728 2012 BRITISH STANDARD,National foreword. This British Standard is the UK implementation of EN 1728 2012. incorporating corrigendum 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 is withdrawn, The UK participation in its preparation was entrusted by Technical.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 request 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 2013.
ISBN 978 0 580 83319 9,ICS 97 140, Compliance with a British Standard 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 publication,Date Text affected. 31 August 2013 Implementation of CEN corrigendum July. 2013 Tables 1 and 2 updated,BS EN 1728 2012,EUROPEAN STANDARD EN 1728. NORME EUROP ENNE,EUROP ISCHE NORM July 2012,ICS 97 140 Incorporating corrigendum.
Supersedes July 2013,EN 1728 2000,English Version, Furniture Seating Test methods for the determination of. strength and durability, Ameublement Si ges M thodes d essais pour la M bel Sitzm bel Pr fverfahren zur Bestimmung der. d termination de la r sistance et de la durabilit 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 European. 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 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 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 Slovakia Slovenia Spain Sweden Switzerland Turkey and United. EUROPEAN COMMITTEE FOR STANDARDIZATION,COMIT EUROP EN DE NORMALISATION. EUROP ISCHES KOMITEE F R NORMUNG, Management Centre Avenue Marnix 17 B 1000 Brussels.
2012 CEN All rights of exploitation in any form and by any means reserved Ref No EN 1728 2012 E. worldwide for CEN national Members,BS EN 1728 2012. EN 1728 2012 E,Contents Page,2 Normative references 5. 3 Terms and definitions 5,4 General test conditions 6. 4 1 Preliminary preparation 6,4 2 Application of forces 6. 4 3 Tolerances 6, 6 Test procedures Chairs other than Work Chairs 16.
6 1 General 16, 6 2 Determination of seat and back loading points 17. 6 2 1 General 17,6 2 2 Seating with a back rest 17. 6 2 3 Seating without a back rest 17,6 3 Determination of Back Angle 19. 6 4 Seat static load and back static load test 20,6 5 Seat Front Edge Static Load 22. 6 6 Vertical load on back rests 22, 6 7 Horizontal forward static load test on back rests 23.
6 8 Foot rest static load test 23,6 9 Leg rest static load test 23. 6 10 Arm rest sideways static load test 24,6 11 Arm rest downwards static load test 24. 6 12 Headrest static load test 25,6 13 Vertical upwards static load on arm rests 26. 6 13 1 Seating which may be moved when occupied 26. 6 13 2 Stacking seating 26, 6 14 Vertical static load on auxiliary writing surfaces 26. 6 15 Leg forward static load test 26,6 16 Leg sideways static load test 27.
6 17 Combined seat and back durability test 28,6 18 Seat front edge durability test 30. 6 19 Durability test on seating with a multi position back rest 31. 6 20 Arm rest durability test 31,6 21 Foot rest durability test 31. 6 22 Auxiliary writing surfaces durability test 32. 6 23 Tipping seat operation 32,6 24 Seat impact test 32. 6 25 Back impact test 33,6 26 Arm rest impact test 34. 6 27 Drop tests 35,6 27 1 Drop test for multiple seat units 35.
6 27 2 Drop test for stacking seating 36,6 27 3 Drop test from the height of a table 37. 6 28 Backward fall test 38,6 29 Castor and chair base durability 38. 6 30 Rolling resistance of the unloaded chair 39,7 Test procedures Work Chairs 39. BS EN 1728 2012,EN 1728 2012 E,7 1 General 39,7 2 Loading points 40. 7 2 1 General 40,7 2 2 Loading point A 40,7 2 3 Loading point B 40.
7 2 4 Loading point C 41,7 2 5 Loading point D 41,7 2 6 Loading point E 41. 7 2 7 Loading point F 41,7 2 8 Loading point G 42,7 2 9 Loading point H 42. 7 2 10 Loading point J 42,7 3 Combined seat and back static load test 42. 7 4 Seat front edge static load test 43,7 5 Arm rest downward static load test central 43. 7 6 Arm rest downward static load test front 44,7 7 Arm rest sideways static load test 45.
7 8 Foot rest static load test 45,7 9 Seat and back durability 45. 7 10 Arm rest durability 46,7 11 Swivel test 46,7 12 Foot rest durability 46. 7 13 Castor and chair base durability 46,7 14 Rolling resistance of the unloaded chair 47. 8 Test procedures Loungers 47,8 1 General 47,8 2 Seat and back static load test 47. 8 3 Additional seat and leg rest static load test 47. 8 4 Seat and back durability test 48,8 4 1 Seat and back durability test procedure 48.
8 4 2 Additional seat durability test procedure 49. 8 5 Durability test on back rest mechanism 50,8 6 Arm rest downwards static load test 50. 8 7 Arm rest durability test 50,8 8 Impact test 50. 8 9 Lifting test for mobile loungers 52,Annex A normative Seat loading pad data 54. Annex B informative Arm rest loading pad details 57. BS EN 1728 2012,EN 1728 2012 E, This document EN 1728 2012 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 January 2013 and conflicting national standards shall be withdrawn at. the latest by January 2013, Attention is drawn 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 listed 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 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 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 and the United Kingdom. BS EN 1728 2012,EN 1728 2012 E, 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 Standard does not apply to children s 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. The test methods are not intended to assess the durability of 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 referenced 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 indentation hardness Part 2. IRHD pocket meter method,3 Terms and definitions, For the purposes of this document the following terms and definitions apply. load bearing parts of furniture such as the frame seat back and arm supports and suspension. extension of the seat area 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. 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 rest might or might not be permanently attached to the structure of the item of seating. 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 single column and can. rotate in the horizontal plane and is at least adjustable in height. BS EN 1728 2012,EN 1728 2012 E, element that supports the back of the user higher than 100 mm above the seat loading point. arm rest length, distance between vertical lines through the front and 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. 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. For seating that is designed to be fixed to the structure of a building the unit shall be mounted according to. the manufacturer s 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 stored 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 15 C to 25 C the maximum and or minimum temperature shall be recorded in the test. 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 The forces in durability tests shall be applied sufficiently slowly to ensure that kinetic. heating does not occur, Unless otherwise stated 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 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 2 of the nominal angle,BS EN 1728 2012,EN 1728 2012 E. The accuracy for the positioning of loading pads and impact plates 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 and apparatus. 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 pad and the foam for loading. 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. in 5 9 and 5 10 shall be used and the arm rest durability test where the apparatus described in 5 11 shall be. 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 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. BSI Standards Publication BS EN 1728 2012 Furniture Seating Test methods for the determination of strength and durability BS EN 1728 2012 Incorporating corrigendum July 2013 BS EN 1728 2012 BS SANA National foreword This British Standard is the UK implementation of EN 1728 2012 incorporating corrigendum July 2013 It supersedes BS EN 1728 2001 which is withdrawn The UK

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