1、BS 4875-7:2006Strength and stability of furniture Part 7: Domestic and contract storage furniture Performance requirementsICS 97.140NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDIncorporatingCorrigendum No. 1Publishing and copyright informationThe BSI copyrigh
2、t notice displayed in this document indicates when the document was last issued. BSI 2006ISBN 0 580 49215 XThe following BSI references relate to the work on this standard:Committee reference FW/0Draft for comment 06/30144174Publication historyFirst published September 1985Second edition, October 19
3、98Third edition, October 2006Amendments issued since publicationAmd. no. Date Text affected16830Corrigendum No. 129 December 2006 Correction to strength of shelf supports test in Table 1BS 4875-7:2006 BSI 2006 iBS 4875-7:2006ContentsForeword iii1 Scope 12 Normative references 13 Principle of the per
4、formance tests 14 Requirements 25 Tests 26 Test report 6AnnexesAnnex A (informative) Test levels in relation to application 7Bibliography 8List of tablesTable 1 Tests 4Table 2 Loads in storage components during testing 6Table 3 Steel impact plates 6Table A.1 Relationship of test levels to use of fur
5、niture 7Table A.2 Test levels for typical applications 7Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 8, an inside back cover and a back cover.BS 4875-7:2006ii BSI 2006 This page deliberately left blank BSI 2006 iiiBS 4875-7:2006ForewordPubli
6、shing informationThis part of BS 4875 was published by BSI and came into effect on 31 October 2006. It was prepared by Panel 2, Domestic and contract furniture, under the authority of Technical Committee FW/0, Furniture. A list of organizations represented on this committee can be obtained on reques
7、t to its secretary.SupersessionThis part of BS 4875 supersedes BS 4875-7:1998, which is withdrawn.Information about this documentThis revision of BS 4875-7 has been prompted, in part, by the publication of ISO 7170:2005, which contains the test methods previously included in BS 4875-7:1998. BS 4975-
8、7:1998 was written as a test method standard, this revision of BS 4875-7 has been written as a performance specification and cross-refers to the test methods given in ISO 7170:2005.This revision of BS 4875-7 does not include safety requirements for domestic storage furniture. These are specified in
9、BS EN 14749:2005, which has replaced BS EN 1727:1998. This revision of BS 4875-7 was also prompted, in part, by the need to remove material covered by BS EN 14749:2005.The performance requirements are verified by tests which reproduce normal use and common misuse to which storage furniture can be su
10、bjected. They apply to a wide range of storage furniture. Five test levels are given, corresponding to the variations in severity of end-use to be expected for various types of storage furniture, e.g. delicate styles, short-life furniture, robust serviceable types. Whilst the tests reproduce normal
11、use and common misuse, they do not reproduce any abuse to which the article might be subjected.Annex A explains the test levels used in this standard.The requirements apply only to the durability of the structure. The tests are designed to be applied to an article that is fully assembled and ready f
12、or use. The tests do not reproduce the effects of degradation of structural materials by sunlight or chemical attack.Use of this documentIt has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and experienced p
13、eople, for whose use it has been produced.Hazard warningsWARNING. This British Standard calls for the use of substances and/or procedures that can be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligation
14、s relating to health and safety at any stage.BS 4875-7:2006iv BSI 2006Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general
15、 informative material is presented in smaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a Brit
16、ish Standard cannot confer immunity from legal obligations. BSI 2006 1BS 4875-7:20061 ScopeThis part of BS 4875 specifies performance requirements for the strength and durability of the structure of domestic and contract storage furniture. It is applicable to entire articles of furniture, fully asse
17、mbled and ready for use.This part of BS 4875 is not applicable to the safety of domestic storage furniture.NOTE Safety requirements and test methods for domestic and kitchen storage units are specified in BS EN 14749:2005.This standard is not applicable to kitchen storage furniture, office storage f
18、urniture or storage furniture intended for educational use.2 Normative referencesThe following referenced 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 (inc
19、luding any amendments) applies.ISO 7170: 2005, Furniture Storage units Determination of strength and durability3 Principle of the performance tests3.1 GeneralConformity to the requirements specified in Clause 4 for the strength and durability of the structure of an article of furniture is verified b
20、y applying to various parts, loads or forces simulating normal functional use, as well as acceptable misuse, according to a graded scale of severity (see Annex A).The test sequence as a whole determines the following:a) static strength and initial damage;b) fatigue strength and damage propagation;c)
21、 ability to withstand acceptable misuse; and d) demonstration of residual strength.The magnitude of the forces applied or the number of applications varies according to the test level to which conformity is tested.3.2 Static testsStatic tests assess the static strength of the article under the highe
22、st levels of loading that can reasonably be expected to occur.3.3 Fatigue testsThe strength of the component parts of the article is tested by simulating the repeated application of loads and movement of components that occur during long-term use.BS 4875-7:20062 BSI 20063.4 Impact testsImpact tests
23、assess the impact strength of the article under the rapid rates of loading that occur only occasionally.4 RequirementsAfter the item of furniture has been tested in accordance with Clause 5, at the selected test level, none of the following shall have occurred:a) any fracture of any member, joint or
24、 component, including castors;b) any loosening, shown to be permanent by hand pressure applied to suitable members, of joints intended to be rigid;c) any deformation or wear of any component that will affect its function;d) any loosening of any means of fixing components to the article;e) any change
25、s that prevent movable parts opening or closing freely or that cause movable parts, other than drawers, to require application of a force in excess of 100 N for operation;f) any deflection of shelves or tops greater than span/200 for particle board, span/50 for wood or span/100 for other materials;g
26、) any deflection of clothes rails greater than span/100;h) any force required to move drawers in excess of 70 N and any force required to maintain movement in excess of 45 N.5Tests5.1 SamplesSamples shall each comprise a complete item of storage furniture, as supplied by the manufacturer, fully asse
27、mbled and ready for use. When testing a complete item of storage furniture all the strength tests (including strength of runners and strength of pivoted doors) shall be carried out on the same sample. If required, to reduce testing time, it shall be permissible for wear and fatigue tests to be carri
28、ed out on components fitted in an additional identical sample. For this purpose the door or drawer under test shall be subjected to the specific tests in the order specified in Table 1, i.e. static strength, followed by durability.NOTE 1 For an item fitted with a number of flaps, drawers or doors th
29、at are identical in every respect (apart from the direction of opening and closing), it is necessary to test only one of the relevant flaps, drawers or doors.Components that have a dual function shall be subjected to the relevant tests for each function, for example, a shelf that can be pulled out o
30、n runners shall be subjected to the tests for shelves and additionally to the durability tests for drawers and runners.NOTE 2 The test results are valid only for the article tested. When the test results are intended to cover other similar articles, the test specimen should be representative of the
31、production model. Information on the scale of sampling to be employed can be obtained from BS 6001. BSI 2006 3BS 4875-7:20065.2 Moisture content of timber componentsBefore testing, parts made of timber products shall be checked with an electric moisture meter to determine whether the moisture conten
32、t is between 8% and 12%. If the moisture is outside this range the sample shall be allowed to stand in a warm ventilated room until the moisture content is between 8% and 12%.5.3 Inspection before testing Immediately before testing, the sample shall be thoroughly inspected. Any defects in the member
33、s, joints or attachments of components such as flaps and extensions shall be noted so that they are not attributed to the tests. A complete dimensional check shall be carried out on all articles likely to suffer permanent deformation as a result of testing. The dimensions shall be recorded.Any minor
34、 defects detected as a result of this inspection shall be recorded in the test report. If the sample is found to have a major defect as described in Clause 4 the sample shall be rejected.5.4 Procedure The sample shall be tested in accordance with ISO 7170:2005, as specified in Table 1. All tests on
35、the sample shall be carried out at the same test level (see Table 1) and in the sequence given in Table 1.Unless otherwise specified for a particular test, all storage components other than those undergoing testing shall be loaded in accordance with Table 2.5.5 Inspection after testing Immediately a
36、fter completion of the tests, the sample shall again be thoroughly inspected. Any defects as detailed in Clause 4 shall be recorded, together with any other changes that have taken place since the initial inspection.BS 4875-7:20064 BSI 2006Table 1 TestsTest Test description Loading Test level(Clause
37、 in ISO 7170:2005)12 3456.2.2 Static load test for tops and bottomsForce, N; 10 times 600 750 1 000 1 2506.2.1 Sustained load test for tops and bottomsMass, kg/dm21.0 1.0 1.5 2.0 2.56.1.4 Strength of shelf supports See ISO 7170:2005, 6.1.4, and Table 36.1.3 Deflection of shelves Mass, kg/dm21.0 1.0
38、1.5 2.0 2.56.3.1 Strength of clothes rail supportsMass, kg/dm; 1 h4.0 4.0 4.0 4.0 4.06.3.2 Dislodgement of clothes railsMass, kg/dm 4.0 4.0 4.0 4.0 4.07.1.2.1 Vertical load on pivoted doorsMass, kg; 10 cycles 10 15 25 30 457.1.2.2 Horizontal load on pivoted doorsForce, N; 10 times506070807.2.3 Durab
39、ility of sliding doors and horizontal roll frontsCycles 10 000 20 000 40 000 80 000 160 0007.1.3 Slam shut test of pivoted doorsMass, m2, kg; 10 times22 3467.1.4 Durability of pivoted doors Cycles 10 000 20 000 40 000 80 000 160 0007.2.2 Slam shut/open of sliding doors and horizontal roll frontsMass
40、, m2, kg; 10 times22 3467.3.1 Strength of bottom-hinged flapsForce, N; 10 times50 100 200 300 5007.3.2 Durability of flaps Cycles 5 000 10 000 20 000 40 000 80 0007.3.3 Drop test for top-hinged flapsCycles 100 150 200 2507.4.2 Durability of vertical roll frontsCycles 2 500 5 000 10 000 20 000 40 000
41、7.4.1 Slam shut/open of vertical roll frontsMass, m2, kg; 10 times22 3467.5.2 Strength of extension elementsForce, N; 10 times100 150 250 300 4507.5.3 Durability of extension elementsCycles 10 000 20 000 40 000 80 000 160 0007.5.4 Slam open/shut test of extension elementsVelocity, m/s, at calibratio
42、n pointsSlam open 5 kgSlam shut 35 kg1.250.801.450.951.651.101.851.252.051.407.5.5 Displacement of extension element bottomsForce, N; 10 times30 40 60 70 807.5.6 Interlock test Force, N; 10 times200 200 200 200 2007.6.2 Strength test for locking and latching mechanisms for extension elementsForce, N
43、; 10 times200 200 200 200 200 BSI 2006 5BS 4875-7:20067.6.3 Strength test for locking and latching mechanisms for doors, flaps and roll frontsForce, N; 10 times200 200 200 200 2006.4.1 Test for structure and underframeForce, N; 10 times150 250 300 450 6006.4.3 Test for units with castors or wheelsCy
44、cles 500 500 1 000 2 0008.1.3 Sustained load test Mass, kg/dm21.0 1.0 1.5 2.0 2.58.1.4 Dislodgement test Force, N 200 200 200 200 200Table 1 Tests (continued)Test Test description Loading Test level(Clause in ISO 7170:2005)12 345BS 4875-7:20066 BSI 20066 Test reportThe test report shall contain the
45、following:a) the number and date of this British Standard, i.e. BS 4875-7:20061);b) details of the article tested, e.g. specification and photographs;c) the test level at which the article has been tested;d) details of any defects observed before the tests;e) details of any defects and damage observ
46、ed after the tests;f) the test result;g) details of any deviation from the test procedures.Table 2 Loads in storage components during testingComponent Load Test level12345Door baskets kg/dm21.01.01.52.02.5Extension elements A)kg/dm30.25 0.25 0.33 0.65 0.8Suspended pocket files kg/dm 2.5 2.5 2.5 2.5
47、2.5A)The volume of extension elements is calculated from the internal depth internal width internal clear height.Table 3 Steel impact platesTest level Mass kgApproximate width mmApproximate thicknessmmLength mmImpact energy J1 0.5 32 10 200 0.492 0.75 48 10 200 0.743 1.1 70 10 200 1.084 1.7 109 10 2
48、00 1.665 2.5 160 10 200 2.451)Marking BS 4875-7:2006 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is solely the claimants respon
49、sibility. Such a declaration is not to be confused with third-party certification of conformity. BSI 2006 7BS 4875-7:2006Annex A (informative) Test levels in relation to applicationTable A.1 shows the type of use that might be expected from furniture in relation to the five test levels.Table A.2 shows the test levels appropriate to some typical applications.Table A.1 Relationship of test levels to use of furnitureTest level Performance category Example of use1 Delicate Cabinets of delicate appearance2 Caref
