1、BRITISH STANDARD BS EN 14073-3:2004 Office furniture Storage furniture Part 3: Test methods for the determination of stability and strength of the structure The European Standard EN 14073-3:2004 has the status of a British Standard ICS 97.140 BS EN 14073-3:2004 This British Standard was published un
2、der the authority of the Standards Policy and Strategy Committee on 4 November 2004 BSI 4 November 2004 ISBN 0 580 44736 7 National foreword This British Standard is the official English language version of EN 14073-3:2004. The UK participation in its preparation was entrusted to Technical Committee
3、 FW/0, Furniture, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Cat
4、alogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its c
5、orrect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; moni
6、tor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was las
7、t issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN140733 August2004 ICS97.140 Englishversion OfficefurnitureStoragefurniturePart3:Testmethodsforthe determinationofstabilityandstrengthofthestructure MobilierdebureauMeublesderangementP
8、artie3: Mthodesdessaipourladterminationdelastabilitetde larsistancedelastructure BrombelBroschrnkeTeil3:Prfverfahrenzur BestimmungderStandsicherheitundderFestigkeitder Konstruktion ThisEuropeanStandardwasapprovedbyCENon27May2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichst
9、ipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,F
10、rench,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germ
11、any,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B10
12、50Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN140733:2004:EEN 14073-3:2004 (E) 2 Contents Foreword3 1 Scope 4 2 Normative references 4 3 General test conditions.4 3.1 Preliminary preparation 4 3.2 Test equipment 5 3.3 Tolerances 5 3
13、.4 Sequence of testing.5 4 Test apparatus .5 4.1 Floor surface 5 4.2 Wall surface5 4.3 Stops .5 4.4 Masses 5 4.5 Impact plates6 4.6 Loading pad6 5 Test methods6 5.1 Determination of loading on storage parts .6 5.2 Strength of unit 7 5.3 Shelves .8 5.3.1 Pull out of shelves .8 5.3.2 Strength of shelf
14、 supports8 5.4 Strength of top surfaces .9 5.5 Stability of free standing units .9 5.5.1 Stability of the unloaded unit .9 5.5.2 Stability of the loaded unit9 5.6 Screen and wall hanging units.10 5.6.1 General10 5.6.2 Dislodgment of screen and wall hanging cabinets and shelves 10 5.6.3 Tests on movi
15、ng parts, shelf supports and top surfaces .10 5.6.4 Strength of screen and wall attachment devices .10 5.7 Floor standing unit attached to the building 11 6 Test report 11 Annex A (informative) Adeviations12 Bibliography 13 EN 14073-3:2004 (E) 3 Foreword This document (EN 14073-3:2004) has been prep
16、ared 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 February 2005, and conflicting national standards shall
17、 be withdrawn at the latest by February 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard : Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greec
18、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14073-3:2004 (E) 4 1 Scope This document specifies test methods for the determination of strength of the structure o
19、f free standing or screen and wall hanging office storage furniture as well as stability of free standing units. This document is applicable to mobile furniture, with the exception of the test described in 5.2 which is replaced by the test described in 6.7 of EN 14074:2004. This document does not ap
20、ply to high density mechanized filing systems, rotary filing systems, or plan files. The tests are intended to simulate overbalancing forces and structural loads, which may occur during normal functional use, as well as misuse that might reasonably be expected to occur. Safety depending on the struc
21、ture of the building is not included, e.g. the strength of wall hanging cabinets includes only the cabinet and its parts. The wall and the wall attachment are not included. Safety requirements can be found in EN 14073-2. Assessment of ageing is not included. 2 Normative references The following refe
22、renced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14074:2004 Office furniture Tables and desks and storage furnitu
23、re - Test methods for the determination of strength and durability of moving parts ISO 7619:2004 Rubber - Determination of indentation hardness by means of pocket hardness meters. 3 General test conditions 3.1 Preliminary preparation The tests specified in this standard are designed to be applied to
24、 an item of furniture that is fully assembled and ready for use. Before any of the tests are commenced, the item shall be old enough to ensure that it has developed its full strength. The furniture shall be tested as delivered. Ready to Assemble furniture shall be assembled according to the instruct
25、ions supplied with it. If the furniture can be assembled or combined in different ways, the most adverse combination shall be used for each test. This is also applicable to units that can be combined with other units or components. Wall or screen mounted units shall be installed according to the man
26、ufacturers instructions. The tests shall be carried out in indoor ambient conditions but, if during a test, the atmosphere temperature is outside the range 15 C to 25 C the maximum and/or minimum temperature shall be recorded in the test report. EN 14073-3:2004 (E) 5 Tighten any assembly fittings be
27、fore testing. Further retightening shall not take place unless it is specifically required by the manufacturer. 3.2 Test equipment The forces in static load tests shall be applied sufficiently slowly to ensure that the influence of dynamic load is negligible. Unless otherwise stated, the static load
28、s shall be maintained for (10 2)s. The test equipment shall be capable of following the deformations that may occur during the tests. Unless otherwise specified, the tests may be applied by any suitable device because results are dependent only upon correctly applied loads and not upon the apparatus
29、. 3.3 Tolerances Unless otherwise stated: all forces shall have an accuracy of 5 % of the nominal force; all dimensions an accuracy of 1,0 mm of the nominal dimension; all masses to an accuracy of 0,5 % of the nominal mass; The accuracy for the position of loading pads shall be 5 mm. The relationshi
30、p 10N = 1kg may be used. 3.4 Sequence of testing Unless otherwise specified, all tests shall be carried out on the same unit and in the sequence laid down in this standard. For a multi shelf unit, all shelf tests shall be carried out on the same shelf. 4 Test apparatus 4.1 Floor surface A rigid, hor
31、izontal and flat surface. 4.2 Wall surface A rigid, vertical and flat surface. 4.3 Stops Devices to prevent the unit from sliding, no higher than 12 mm except in cases where the design of the unit necessitates the use of higher stops, in which case the lowest that will prevent the item from sliding
32、shall be used. 4.4 Masses Masses shall not reinforce the structure or re-distribute the stresses. EN 14073-3:2004 (E) 6 If bags with metal shots, etc. are used they shall be divided into small compartments to prevent the contents from moving during the tests. Loads shall be evenly distributed unless
33、 otherwise specified. Suspended pocket files shall be loaded with typing paper or a suitable representation of it and where applicable pocket files shall be oriented in the most adverse direction. 4.5 Impact plates Two steel impact plates, each one faced with a 3mm thick layer of rubber with hardnes
34、s of (85 10) IRHD according to ISO 7619:2004 : a 2,5 kg impact plate, 200 mm x 160 mm x 10 mm, when the height above the shelf is 300 mm. a 1,7 kg impact plate, 200 mm x 109 mm x 10 mm, when the height above the shelf is 300 mm. 4.6 Loading pad A rigid cylindrical object 100 mm in diameter (or 50 mm
35、 in diameter to be used in limited space), having a flat face and with 12 mm radius on the edge. 5 Test methods 5.1 Determination of loading on storage parts All parts intended for storage purposes shall be uniformly loaded according to Table 1 unless otherwise specified by the manufacturer. The vol
36、ume of drawers shall be calculated from the area of the drawer bottom multiplied by the clear height. The clear height is the distance between the top surface of the drawer bottom and the lower edge of the drawer front of the drawer above, or the structure of the unit. EN 14073-3:2004 (E) 7 Table 1
37、Loads on Storage Components Shelves kg/dm 1,5 Clothes rails kg/dm 5,0 Extension elements kg/dm 0,5 Suspended pocket files kg/dm a)4,0 a)Measured perpendicular to the suspended pocket files 5.2 Strength of unit This test is not applicable to screen and wall hanging units or other built-in units attac
38、hed to the building.Mobile furniture shall be tested according to 6.7 of EN 14074:2004. Place the unit on the floor surface (4.1) with stops (4.3) located as in figure 1. Unless otherwise specified by the manufacturer, load all parts that can be used for storage purposes, according to Table 1 (top s
39、urfaces shall be loaded as shelves). Close extension elements, flaps, roll fronts and doors. Apply a horizontal static force of 350 N, 10 times at point A in figure 1, on the vertical centreline of the structure of the unit, 50 mm from the highest point at that position but not higher than 1600 mm f
40、rom the floor. NOTE: If the loading point is not on a structural member, a bridging bar should be used. If the unit tends to overturn in one direction, lower the point of application of that force until tilting is just prevented in that direction only. Record the height. The test may be carried out
41、in a one stage cycle A, C, B, D or in a two stage cycle A, B followed by C, D. Inspect the unit before and after the test. EN 14073-3:2004 (E) 8 Dimensions in millimetres Figure 1 Strength of unit 5.3 Shelves 5.3.1 Pull out of shelves Apply a horizontal force of 50 % of the weight of the unloaded sh
42、elf, up to a maximum of 20N, to the middle of the front edge. Record whether the shelf remains in the unit. 5.3.2 Strength of shelf supports All supports of the shelf shall be tested. For units with an indeterminate number of shelves, unless otherwise specified, divide the internal height of the uni
43、t in millimetres by 300 and take the nearer integer. This number minus 1 shall be the number of shelves to be fitted. Where the shelves and shelf supports are identical, it is only necessary to test one shelf. Where the shelves and shelf supports are not identical, each combination shall be tested.
44、Unless otherwise specified by the manufacturer, load the unit uniformly according to Table 1. Distribute the load uniformly on the shelf being tested except at approximately 220 mm from one support, where the impact plate (4.5) shall be tipped over 10 times at a point as close to the support as poss
45、ible (see figure 2). The striking surface shall be that faced with rubber. Inspect the shelf and the support before and after the tests. EN 14073-3:2004 (E) 9 Dimensions in millimetres Figure 2 Strength of shelf supports 5.4 Strength of top surfaces This test shall be applied to top surfaces which a
46、re 1000 mm above the floor surface. Apply a vertical force of 1000N, using the loading pad (4.6), 10 times at the position most likely to cause failure on the top surface but not less than 50 mm from one edge. Inspect the top surface before and after the test. 5.5 Stability of free standing units 5.
47、5.1 Stability of the unloaded unit Place the unit on the floor surface (4.1). Open all doors to 90. With the exception of any extension whose bottom front edge is 300 mm above the floor, fully extend as many extension elements as possible without overriding the interlocks (if fitted). Open flaps to
48、their horizontal position or as near horizontal as possible. Apply a vertical downwards load of 50N to any point likely to cause overturning, on the centreline of the front of an extension element and at 50 mm from the outer edge of a door or flap. Record whether the unit overturns. 5.5.2 Stability of the loaded unit Place the unit on the floor surface (4.1). Unless otherwise specified by the manufacturer, load all storage components with the load specified in Table 1. Open all doors to 90. With the exc
