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1、AS/NZS 3813:1998 Australian/New Zealand Standard Plastic monobloc chairs AS/NZS 3813:1998 This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee CS/91, Domestic Furniture. It was approved on behalf of the Council of Standards Australia on 31 December 1997 and on behalf
2、of the Council of Standards New Zealand on 22 December 1997. It was published on 5 April 1998. The following interests are represented on Committee CS/91: Australasian Furnishing Research and Development Institute Department of Fair Trading N.S.W., Consumer Protection Agency Furnishing Industry Asso
3、ciation of Australia Ministry of Consumer Affairs, New Zealand Office of Consumer Affairs, Qld Plastics Institute of New Zealand Plastics and Chemicals Industry Association, Australia Retailers Council of Australia Review of Standards. To keep abreast of progress in industry, Joint Australian/ New Z
4、ealand Standards are subject to periodic review and are kept up to date by the issue of amendments or new editions as necessary. It is important therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto. Full details of all Joint Standards an
5、d related publications will be found in the Standards Australia and Standards New Zealand Catalogue of Publications; this information is supplemented each month by the magazines The Australian Standard and Standards New Zealand, which subscribing members receive, and which give details of new public
6、ations, new editions and amendments, and of withdrawn Standards. Suggestions for improvements to Joint Standards, addressed to the head office of either Standards Australia or Standards New Zealand, are welcomed. Notifi cation of any inaccuracy or ambiguity found in a Joint Australian/New Zealand St
7、andard should be made without delay in order that the matter may be investigated and appropriate action taken. This Standard was issued in draft form for comment as DR 96065. AS/NZS 3813:1998 Australian/New Zealand Standard Plastic monobloc chairs First published as AS/NZS 3813:1998. PUBLISHED JOINT
8、LY BY: STANDARDS AUSTRALIA 1 The Crescent, Homebush NSW 2140 Australia STANDARDS NEW ZEALAND Level 10, Radio New Zealand House, 155 The Terrace, Wellington 6001 New Zealand ISBN 0 7337 1815 7 AS/NZS 3813:19982 PREFACE This Standard was prepared by the Joint Standards Australia/Standards New Zealand
9、Committee CS/91 on Domestic Furniture, at the request of a manufacturer. Concern had been expressed by other manufacturers, the Plastics and Chemicals Industry Association and consumer affairs bodies that plastic chairs had been failing and that it was difficult to select good quality from poor qual
10、ity chairs. The Standard is based on ISO 7173, FurnitureChairs and stoolsDetermination of strength and durability and ISO 7174, FurnitureChairsDetermination of stability, Part 1: Upright chairs and stools. As the Committee considers that these Standards do not sufficiently cover plastic chairs withi
11、n their scope, certain changes have been found to be necessary. Climate, mainly temperature, has a significant effect on the durability of plastic and therefore the requirements in tests differ. Specifically, some test methods do not translate to plastic: the diagonal base test does not allow for th
12、e elastic nature of the plastic and the fact that it does not necessarily just break but flexes or bends; the impact test, leg rearward, leg forward and leg sideways tests do not allow for the light weight of a plastic chair and can result in the entire chair being thrown away from the test apparatu
13、s. The floor surface used has been adapted to simulate more closely the surface that appeared to be causing the most problems in the more extreme end use applications. Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard. The term norm
14、ative has been used in this Standard to define the application of the appendix to which it applies. A normative appendix is an integral part of a Standard. CopyrightSTANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Users of Standards are reminded that copyright subsists in all Standards Australia and Standa
15、rds New Zealand publications and software. ExceptwheretheCopyrightActallowsandexceptwhereprovidedforbelownopublicationsorsoftwareproducedby Standards Australia or Standards New Zealand may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in
16、 writing from Standards Australia or Standards New Zealand. Permission may be conditional on an appropriate royalty payment. Australian requests for permission and information on commercial software royalties should be directed to the head office of Standards Australia. New Zealand requests should b
17、e directed to Standards New Zealand. Up to 10 percent of the technical content pages of a Standard may be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Australia or Standards New Zealand. Inclusion of copyright material in compu
18、ter software programs is also permitted without royalty payment provided such programs are used exclusively in-house by the creators of the programs. Care should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever the Standard is amended
19、or revised. The number and date of the Standard should therefore be clearly identified. The use of material in print form or in computer software programs to be used commercially, with or without payment, or in commercial contracts is subject to the payment of a royalty. This policy may be varied by
20、 Standards Australia or Standards New Zealand at any time. 3AS/NZS 3813:1998 CONTENTS Page FOREWORD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 SECTION 1 SCOPE AND GENERAL 1.1SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、 . . . . . . . . . . . . . . . . . .5 1.2OBJECTIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.3REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.4DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、. . . . . . . . . . . . . . . . .5 SECTION 2 GENERAL REQUIREMENTS 2.1FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.2APPLICATION OF TEST RESULTS TO VARIATIONS IN CHAIR CONSTRUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . .7 SECTION 3 TESTINGSTRENGTH AND DURABILITY REQUIREMENTS 3.1GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3.2PERFORMANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 SECTION 4 TESTINGSTABILITY REQUIREMENTS 4.1GENERAL
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 4.2PERFORMANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 SECTION 5 FINAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 SECTION 6 MARKING R
25、EQUIREMENTS AND TEST REPORT 6.1GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 6.2MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 6.3TEST REPORT . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . .13 APPENDICES ACHAIR INSPECTION FOR DAMAGE AND DIMENSIONAL CHANGE . . . .14 BDETERMINATION OF SEAT LOADING POINT (SLP) AND BACK LOADING POINT (BLP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 CSEAT STATIC LOAD TEST . . . . . . . . . . . . . .
27、 . . . . . . . . . . . . . . . . . . . . .21 DBACK STATIC LOAD TEST WITH BACK DEFORMATION ASSESSMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 EARM SIDEWAYS STATIC LOAD TEST . . . . . . . . . . . . . . . . . . . . . . . . . .29 FARM DOWNWARDS STATIC
28、LOAD TEST. . . . . . . . . . . . . . . . . . . . . . .31 GSEAT FATIGUE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 HBACK FATIGUE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 ILEG FORWARD STATIC LOAD TEST . . . . . . . .
29、 . . . . . . . . . . . . . . . . . . .37 JLEG REARWARD STATIC LOAD TEST . . . . . . . . . . . . . . . . . . . . . . . . . .39 KLEG SIDEWAYS STATIC LOAD TEST . . . . . . . . . . . . . . . . . . . . . . . . . . .41 LSEAT IMPACT TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30、 . . . . .43 MDROP TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 NREARWARD OVERTURNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 OFRONTWARD OVERTURNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 A
31、S/NZS 3813:19984 FOREWORD This Standard allows for two levels of performance based on the end use of the chair domestic or commercial. The forces used are sufficient to apply to chairs intended for adult use and also to ensure that a chair meets the minimum requirements in its intended environment,
32、but do not ensure that failure will not eventually occur either as a result of habitual misuse or after three years of service. With the exception of the seat and back loading point determination and the seat impact test, test results are dependent on the loads being correctly applied, therefore for
33、 the remaining tests, apparatus equivalent to that listed may be used. In the case of designs not catered for in the test procedures, the test should be carried out as closely as possible to that described and deviations from the test procedure noted on the test report. The strength and durability o
34、f the chair are determined by the application of static, impact and fatigue tests. The forces used are sufficient to allow for normal functional use and reasonable misuse but not habitual misuse. Strength and durability are detailed in Section 3. The stability of the chair is determined by both the
35、application of impact forces and by applying loads that could normally be encountered. Stability is detailed in Section 4 and by tilting the chair to simulate normal functional use. The tests provide a procedure that will allow comparative analysis of the stability of various chairs under relatively
36、 fixed conditions. Chair stability is related to personal sitting habits, chair style, use conditions, floor finish and condition as well as design of the chair legs, which are variables complicating the fixing of minimum requirements. The minimum acceptance level is based on the weight and style of
37、 chair for both frontwards and rearwards overturning. The Committee addressed the issue of weathering of plastic monobloc chairs at great length. It was concluded that there is no fully satisfactory means of predicting long term weathering performance from accelerated (short term) tests, as every co
38、lour and every change in material formulation would need to be aged under standard weather rack conditions for three years. The need for testing each and every change of colour or formulation would militate against improvements in formulation or colour changing with fashion and any new supplier, whe
39、ther local or overseas, would have to wait three years for approval to supply. In view of the fact that ISO 7173 has no weathering requirement, nor were there any known failures from UV radiation on Australian produced monobloc chairs, it would be very onerous to include such a requirement at this s
40、tage. If ISO should introduce such a requirement in the future, this Standard could be reviewed at that time. 5AS/NZS 3813:1998 STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Australian/New Zealand Standard Plastic monobloc chairs S E C T I O N1S C O P EA N DG E N E R A L 1.1SCOPEThis Standard sets out r
41、equirements for the evaluation and selection of plastic monobloc chairs for adults but does not include chairs intended for bathroom use. It specifies minimum requirements for strength, durability and stability of the completed chair, but does not account for materials, design, construction or the p
42、rocess of manufacture. NOTES: 1Chairs intended for bathroom and shower use are not covered by this Standard. Chairs in such environments have different requirements due to the hot, wet conditions and the effects of soap. Inclusion of tests in this Standard to cover these conditions would add to the
43、expense of all plastic monobloc chairs, as all chairs would have to be tested whether or not this use was intended. See Section 6 in this Standard for labelling and the Standard for mobile shower/toilet chairs. 2The test results are only valid for the chair tested, therefore if the test is intended
44、to be applied to similar chairs, the test specimen should represent the production model. 3The test results do not ensure that structural failure will not occur. 1.2OBJECTIVETo provide purchasers, specifiers, users, retailers, manufacturers and regulatory authorities with a standard for plastic chai
45、rs that specifies strength, durability and stability requirements and enables use of these criteria to assist in selection and evaluation. 1.3REFERENCED DOCUMENTSThe following documents are referred to in this Standard: AS 1449 Wrought alloy steelsStainless and heat-resisting plate, sheet and strip
46、ISO 2439 FlexiblecellularpolymermaterialsDeterminationofhardness(indentation technique) 1.4DEFINITIONSFor the purposes of this Standard, the definitions below apply. 1.4.1Commercialany item used in other than domestic premises. 1.4.2Domesticany item used in the home, whether it be for indoor or outd
47、oor use. 1.4.3Impact teststests to assess the strength of the chair under the rapid rates of loading that only occasionally occur. 1.4.4Importerthe persons or corporate body assuming legal responsibility for the product under the relevant State or Federal laws, if the product is not manufactured in
48、Australia or New Zealand. 1.4.5Manufacturerthe persons or corporate body assuming legal responsibility for the product under the relevant State or Federal laws, if the product is manufactured in Australia or New Zealand. COPYRIGHT AS/NZS 3813:19986 1.4.6Monobloc chaira moulded, upright one-piece cha
49、ir with a back in a fixed position, with or without arms and no moving parts, for seating one adult person. 1.4.7Shallindicates that a statement is mandatory. 1.4.8Shouldindicates a recommendation. 1.4.9Strength and durability teststests simulating the repeated cyclic loading of the chair occurring during long-term use and assessing the strength of the chair under such conditions (see Appendices F and G). COPYRIGHT 7AS/NZS 3813:1998 S E C T I O N2G E N E R A LR E Q U I R E M E N TS 2.1FUNCTIONThe designer and manufacturer of the chair shall ensure that there are no
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