1、BS EN ISO 20957-4:2016Stationary training equipmentPart 4: Strength training benches, additionalspecific safety requirements and testmethods (ISO 20957-4:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 20957-4:2016 BRITISH STANDARDNational forewordThis
2、 British Standard is the UK implementation of EN ISO 20957-4:2016. It supersedes BS EN 957-4:2006+A1:2010 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee SW/136/4, Sports, Playground and other Recreational Equipment - Stationary Training Equipment.A li
3、st of organizations represented on this committee 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 2016.Published by BSI Standards
4、Limited 2016ISBN 978 0 580 89723 8 ICS 97.220.30 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 31 December 2016.Amendments/corrigenda issued since publicationD
5、ate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20957-4 December 2016 ICS 97.220.30 Supersedes EN 957-4:2006+A1:2010English Version Stationary training equipment - Part 4: Strength training benches, additional specific safety requirements and test methods (ISO 209
6、57-4:2016) quipement dentranement fixe - Partie 4: Bancs pour haltres, exigences spcifiques de scurit et mthodes dessai supplmentaires (ISO 20957-4:2016) Stationre Trainingsgerte - Teil 4: Kraft-Trainingsbnke, zustzliche besondere sicherheitstechnische Anforderungen und Prfverfahren (ISO 20957-4:201
7、6) This European Standard was approved by CEN on 7 November 2016. 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
8、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
9、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 Mace
10、donia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUR
11、OPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 20957-4:2016 EBS EN ISO 20957-4:2016EN ISO 20957-4:2016 (E) 3 European foreword T
12、his document (EN ISO 20957-4:2016) has been prepared by Technical Committee ISO/TC 83 “Sports and other recreational facilities and equipment” in collaboration with Technical Committee CEN/TC 136 “Sports, playground and other recreational facilities and equipment” the secretariat of which is held by
13、 DIN. 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 June 2017, and conflicting national standards shall be withdrawn at the latest by June 2017. Attention is drawn to the possibility that some o
14、f 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 957-4:2006+A1:2010. This document has been prepared under a mandate given to CEN by the European Commission
15、 and the European Free Trade Association. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Y
16、ugoslav 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. Endorsement notice The text of ISO 20957-4:20
17、16 has been approved by CEN as EN ISO 20957-4:2016 without any modification. BS EN ISO 20957-4:2016ISO 20957-4:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Classification 15 Safety requirements . 15.1 General . 15.2 Benches with fixed barbell suppor
18、ts . 15.2.1 Stability of the barbell . 15.2.2 Lateral stability of benches with fixed barbell supports . 25.2.3 Longitudinal stability of benches with fixed barbell supports 25.3 Free-standing barbell supports 25.4 Dimensions of the barbell support 25.5 Barbell support strength and stability . 25.6
19、Loading 25.7 Barbell support . 36 Test methods . 36.1 General . 36.1.1 Dimensional check . 36.1.2 Visual examination . 36.1.3 Performance test 36.2 Testing of rotational stability of the barbell 36.3 Testing of rotational stability of benches with fixed barbell supports . 46.4 Testing of longitudina
20、l stability 46.5 Testing of barbell support strength and stability 47 Test report . 5 ISO 2016 All rights reserved iiiContents PageBS EN ISO 20957-4:2016ISO 20957-4:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO mem
21、ber 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, governmen
22、tal 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
23、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
24、 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
25、 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 on the meaning of ISO specific terms and expressions related to conformity asses
26、sment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.ISO 20957-4 was prepared by the European Committee Standardization (CEN) Technical Committee CEN/TC 136, S
27、ports, playground and other recreational facilities and equipment, in collaboration with ISO Technical Committee TC 83, Sports and other recreational facilities and equipment, in accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement).This second edition cancels
28、 and replaces the first edition (ISO 20957-4:2005), which has been technically revised with the following changes: publication as an EN ISO; formulation aligned with ISO 20957-1; Clause 5 “Safety requirements” specified and restructured; Clause 6 “Test methods” specified and restructured; normative
29、references updated.A list of all parts in the ISO 20957 series can be found on the ISO website.iv ISO 2016 All rights reservedBS EN ISO 20957-4:2016ISO 20957-4:2016(E)IntroductionThis document concerns the safety of strength training benches. It is intended to be used in conjunction with ISO 20957-1
30、. The requirements of this document take priority over the requirements in ISO 20957-1. ISO 2016 All rights reserved vBS EN ISO 20957-4:2016BS EN ISO 20957-4:2016Stationary training equipment Part 4: Strength training benches, additional specific safety requirements and test methods1 ScopeThis docum
31、ent specifies safety requirements for stationary strength training benches and free-standing barbell racks in addition to the general safety requirements of ISO 20957-1. It is intended to be read in conjunction with ISO 20957-1.This document is applicable to stationary training equipment type benche
32、s (type 4) (hereinafter referred to as benches) with the classes S, H and I according to ISO 20957-1.2 Normative referencesThe 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 edi
33、tion cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 20957-1, Stationary training equipment Part 1: General safety requirements and test methods3 Terms and definitionsFor the purposes of this document, the terms and definiti
34、ons given in ISO 20957-1 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/obp4 ClassificationThe classification shall be a
35、ccording to ISO 20957-1.5 Safety requirements5.1 GeneralDepending on the design of the training equipment, the following requirements shall apply as appropriate.5.2 Benches with fixed barbell supports5.2.1 Stability of the barbellOverturning of the barbell by an unequal load shall be prevented eithe
36、r by the distance between the supports or safety device.INTERNATIONAL STANDARD ISO 20957-4:2016(E) ISO 2016 All rights reserved 1BS EN ISO 20957-4:2016ISO 20957-4:2016(E)Test in accordance with 6.2.5.2.2 Lateral stability of benches with fixed barbell supportsBenches with fixed barbell supports shal
37、l be stable when loaded with unequal load at right angles to the longitudinal axis.Test in accordance with 6.3.5.2.3 Longitudinal stability of benches with fixed barbell supportsBenches with fixed barbell supports shall be stable in the longitudinal direction with respect to the bench.Test in accord
38、ance with 6.4.5.3 Free-standing barbell supportsFree-standing barbell supports shall have a device for connecting to the ground.Test in accordance with 6.1.2.5.4 Dimensions of the barbell supportThe front part of the support (yoke), when measured with a (30 1) mm diameter bar, shall have a vertical
39、height of 20 mm to 40 mm (see footnote a in Figure 1) above the lowest point of the resting bar and the rear part shall be 80 mm higher than the top of the front of the support (yoke) (see Figure 1).Dimensions in millimetresKeyaVertical height of the barbell support, 20 mm to 40 mm.Figure 1 Dimensio
40、ns of the barbell supportTest in accordance with 6.1.1.5.5 Barbell support strength and stabilityThe rear part of the barbell support shall absorb the loads without breakage, shall not tip over and shall still function as intended by the manufacturer, when subjected to a non-symmetric barbell impact
41、.Test in accordance with 6.5.5.6 LoadingFor benches classes H, S and I, the intrinsic and extrinsic loading shall comply with ISO 20957-1.2 ISO 2016 All rights reservedBS EN ISO 20957-4:2016ISO 20957-4:2016(E)5.7 Barbell supportAny part of the equipment intended to support free weights shall be easi
42、ly accessible to the user while accepting or replacing the barbell.Test in accordance with 6.1.3.6 Test methods6.1 General6.1.1 Dimensional checkThe measurement shall be done with appropriate measurement devices.6.1.2 Visual examinationThe visual examination shall be done under proper lighting.6.1.3
43、 Performance testThe tested mechanism shall be actuated as intended by the manufacturer.6.2 Testing of rotational stability of the barbellA solid steel bar which is (1 600 50) mm long and has a diameter of (27,5 1) mm shall be placed centrally on the barbell supports. If the bench is designed for us
44、e with an Olympic size steel bar, use an Olympic steel bar of (2 200 50) mm instead of the (1 600 50) mm steel bar.Then one weight disk ofa) 10 kg for class H, andb) 20 kg for class Sshall be placed on one side of the steel bar with mid-plane of the disk positioned according to Figure 2.Dimensions i
45、n millimetresFigure 2 Stability test under unequal load ISO 2016 All rights reserved 3BS EN ISO 20957-4:2016ISO 20957-4:2016(E)6.3 Testing of rotational stability of benches with fixed barbell supportsTest in accordance with 6.2, but with the barbell fixed anda) with half of the maximum training loa
46、d specified by the manufacturer, orb) with 40 kg for class H and 50 kg for classes S and I,whichever is greater.6.4 Testing of longitudinal stabilityThe bench shall be positioned on a (1001+) slope with the bench oriented such that the barbell support is at the lower end on the slope and the barbell
47、 support shall be set to the highest position (see Figure 3). A barbell loaded in accordance with the maximum load as specified by the manufacturer, or 50 kg, whichever is greater, shall be placed on the barbell supports.Figure 3 Stability test in longitudinal direction6.5 Testing of barbell support
48、 strength and stabilityConstruct a test apparatus in a form of inverted (850 5) mm long pendulum that supports the barbell above the bench or seat and is designed and configured so that when released, the load pivots backwards and strikes only one side of the barbell support at a time at a point (40
49、 5) mm down from the uppermost end of the barbell support from a distance of (300 5) mm. If a bench is attached to the barbell supports, a weight equal to the maximum body weight as specified by the manufacturer shall be distributed evenly over the bench (see Figure 4).Load the barbell witha) half of the maximum training load specified by the manufacturer, orb) 40 kg for class H and 50 kg for classes S and I,whichever is greater.NOTE The overall height of the testing device can be varied to achieve the impact
