1、December 2010 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 79.080!$lY“1735457www.din.deDDIN EN 1533Wood flooring Determination of bending strength under static load Test methodsEnglish translation of DIN EN 1533:2010-12Holzfubden Bestimmung der Biegefestigkeit unter statischer Beanspruchung PrfmethodenEnglische bersetzung von DIN EN 1533:2010-12Planchers
3、 en bois Dtermination de la flexion sous charge statique Mthodes dessaiTraduction anglaise de DIN EN 1533:2010-12SupersedesDIN EN 1533:2000-04www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1711.10 DIN EN 1533:2010-12 A comma is us
4、ed as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards
5、Committee), Working Committee NA 042-01-14 AA Spiegelausschuss zu CEN/TC 175 und ISO/TC 218 Rund- und Schnittholz. Amendments This standard differs from DIN EN 1533:2000-04 as follows: a) the title of the standard has been changed; b) Clause 1 “Scope” has been modified; c) Clause 2 “Normative refere
6、nces” has been updated; d) the following definitions have been deleted: “bending properties of a test assembly” (3.1), “bending stiffness” (3.4) and “bending capacity” (3.5); e) the accuracy has been modified to 1 mm (5.1); f) the loading head for static load has been modified (5.2.3); g) Subclause
7、6.3 “Conditioning” has been rendered more precise; h) Figures 1, 2 and 3 have been revised; i) Figures 4 and 5 have been deleted; j) the test report has been extended (9); k) the standard has been editorially revised. Previous editions DIN EN 1533: 2000-04 2 EUROPEAN STANDARD NORME EUROPENNE EUROPIS
8、CHE NORM EN 1533 August 2010 ICS 79.080 English Version Wood flooring - Determination of bending strength under static load - Test methods Planchers en bois - Dtermination de la flexion sous charge statique - Mthodes dessai Holzfubden - Bestimmung der Biegefestigkeit unter statischer Beanspruchung -
9、 Prfmethoden This European Standard was approved by CEN on 26 June 2010. 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 bibliogra
10、phical references concerning such national standards may be obtained on application to the CEN 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
11、 CEN member into its own language and notified to the CEN 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, France, Germany, Greece, Hungary, Iceland
12、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Ma
13、rnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1533:2010: EEN 1533:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 54.1 General 54.2 Static li
14、ne load 54.3 Static point load .55 Apparatus .55.1 Measuring instrument for dimensions and deflection .55.2 Loading equipment 55.2.1 Accuracy .55.2.2 Static line load 55.2.3 Static load .55.3 Support .76 Test assembly 86.1 Preparation of a test assembly .86.1.1 General 86.1.2 Wood flooring of which
15、the ends of the elements are supported by the battens 106.1.3 Wood flooring of which the ends of the elements are not supported by the battens . 106.2 Sampling 106.3 Conditioning 107 Procedure 107.1 General . 107.2 Placing of the test assembly . 117.2.1 General . 117.2.2 Static line load . 117.2.3 S
16、tatic point load 117.3 Determination of the maximum load for the test assembly . 118 Expression of the results for a sample 118.1 Common statistical methods . 118.1.1 Mean value . 118.1.2 Standard deviation 118.1.3 Characteristic values 128.2 Final results . 149 Test report . 14Bibliography . 15DIN
17、EN 1533:2010-12 EN 1533:2010 (E) 3 Foreword This document (EN 1533:2010) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identi
18、cal text or by endorsement, at the latest by February 2011, and conflicting national standards shall be withdrawn at the latest by February 2011. 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
19、 responsible for identifying any or all such patent rights. This document supersedes EN 1533:2000. Compared with EN 1533:2000, the following modifications have been made: a) modification of accuracy in 5.1; b) modification of loading equipment for static load (5.2.3); c) modification and improvement
20、 of Figures 1, 2 and 3; d) simplification and new presentation of Clause 6 regarding test assembly; e) simplification and new presentation of Clause 7 regarding procedure; f) simplification and new presentation of Clause 8 regarding expression of results. This standard is one of a series of standard
21、s concerning wood flooring and wood panelling and cladding. 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,
22、 Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 1533:2010-12 EN 1533:2010 (E) 4 1 Scope This European Standard specifie
23、s methods of determining the bending strength of wood flooring under static load: a method with a static line load and a method with a static point load. The methods apply to wood flooring installed on a non-continuous support and thus assuming static load-bearing conditions. 2 Normative references
24、The 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 (including any amendments) applies. EN 13756:2002, Wood flooring Terminology 3 Terms
25、and definitions For the purposes of this document, the terms and definitions given in EN 13756:2002 and the following apply: 3.1 test assembly set of wood flooring elements assembled according to a defined type or to the instructions of the manufacturer, for the purpose of being tested 3.2 element s
26、mallest individual part (strip or board) of wood flooring 3.3 maximum load maximum force leading to the failure of the test assembly 3.4 bending strength result of various values of maximum load expressed as a mean value or a characteristic value, in newton 3.5 static line load bending force applied
27、 to the test assembly by means of a bar whose axis is parallel to the axis of the supports 3.6 static point load bending force applied to the test assembly by means of a bar whose axis is perpendicular to the plane of the test assembly 3.7 span distance between the axes of supporting battens or jois
28、ts DIN EN 1533:2010-12 EN 1533:2010 (E) 5 4 Principle 4.1 General The tests are carried out on a test assembly made up with several elements jointed according to a defined type or in special applications to the manufacturers instructions. 4.2 Static line load The bending strength is determined by ap
29、plying a static line load across the mid span of some test assemblies. 4.3 Static point load The bending strength is determined by the application of a static point load across the mid span of some test assemblies. 5 Apparatus 5.1 Measuring instrument for dimensions and deflection For the length of
30、wood flooring elements and for the span, use a measuring instrument with a minimum accuracy of 1 mm. For the width and thickness of wood flooring elements and battens or joists, use a measuring instrument with a minimum accuracy of 0,5 mm. 5.2 Loading equipment 5.2.1 Accuracy It shall be able to mea
31、sure the load to an accuracy of 1 %. 5.2.2 Static line load The load shall be applied by a steel loading head, with a contact surface rounded to a radius of (15 0,05) mm, whose length l exceeds the width of the test assembly (see Figure 1a). Its axis shall be parallel to the surface of the test asse
32、mbly and perpendicular to the length of the elements making it up. 5.2.3 Static load The load shall be applied by a steel loading head with a squared contact face of (50 x 50) mm; the edge of the contact surface shall be rounded or bevelled. Its axis shall be perpendicular to the face of the test as
33、sembly. (see Figure 1b). NOTE The loading head described above is according to EN 1991-1-1 where it is defined. DIN EN 1533:2010-12 EN 1533:2010 (E) 6 Dimensions in millimetres a) Static line loading head b) Static point loading head Figure 1 Loading equipment DIN EN 1533:2010-12 EN 1533:2010 (E) 7
34、5.3 Support A flat rigid table with devices, adjustable in span, to fix the battens of the test assembly (see Figure 2). The support is stiff enough if, under the load applied in the test, its deflection is less than 0,1 mm in the direction of the applied force. The clearance between the back of the
35、 test assembly and the support shall be consistent with the deflection under failure load. The thickness of the battens or joists shall be suitable for that purpose. The length of the table shall be consistent with the length of the test assembly (about 1,50 m). The end-supports can be independent o
36、f the two supports of the central span, but they shall not move relative to the central supports. The load can be applied by movement of either the loading head or of the supporting table. DIN EN 1533:2010-12 EN 1533:2010 (E) 8 Dimensions in millimetres a) Movement by loading head Distance “x“ is de
37、termined by the manufacturer installation guideline. b) Movement by supporting table Key F force Figure 2 Support 6 Test assembly 6.1 Preparation of a test assembly 6.1.1 General See Figure 3. DIN EN 1533:2010-12 EN 1533:2010 (E) 9 a) Section view b) Assembled elements Key l1width of element Figure
38、3 Preparation of a test assembly DIN EN 1533:2010-12 EN 1533:2010 (E) 10 A set of four elements shall be assembled as defined below: For special applications, more elements can be added. The elements shall be fixed on the battens by nailing or according to the manufacturers instructions. The battens
39、 shall be made of timber with a density of at least 400 kg/m3. Their width shall be (45 1) mm, their depth shall be at least 45 mm and, if necessary, adjusted to the stroke of the loading head between the contact point on the test specimen and the failure point. NOTE When required as supports for a
40、defined end-use, joists, instead of battens, can be used to make up the assembly. 6.1.2 Wood flooring of which the ends of the elements are supported by the battens A set of four elements shall be assembled as defined bellow: One element on each side of two end-jointed elements, the end joint shall
41、be roughly in line with the middle of one of the central batten. 6.1.3 Wood flooring of which the ends of the elements are not supported by the battens One element on each side of the two end-jointed elements, the end joint shall be roughly distant of 3 cm from the middle of the span of the two cent
42、ral battens. NOTE The manufacturers instructions can specify the span and the type of fixing. 6.2 Sampling The samples, taken at random, shall be defined for a given type of wood flooring as they are defined in the corresponding product standard. The samples can be coated or not. The number of eleme
43、nts necessary to make at least six assemblies shall be sampled to determine the bending strength. 6.3 Conditioning The test specimen shall be conditioned either in: - climate A, defined by a relative humidity of (65 5) % and a temperature of (20 2)C, or - climate B, defined by a relative humidity of
44、 (50 5) % and a temperature of (23 2)C. 7 Procedure 7.1 General Measure the width and thickness of the elements with the apparatus as defined in 5.1. Check out the span and the width of the battens with the apparatus as defined in 5.1. DIN EN 1533:2010-12 EN 1533:2010 (E) 11 7.2 Placing of the test
45、assembly 7.2.1 General Place the test assembly flat on the supporting table, the face facing the central loading head, with its longitudinal axis at right angles to that of the supports with the centre point under the load. The battens shall be properly clamped in a fixed position relative to the su
46、pport. 7.2.2 Static line load Adjust the loading head relative to the battens in the middle of the central span to 1 mm along the loading line (see Figure 1a). 7.2.3 Static point load The axis of the loading head shall be adjusted within 1 mm to the mid span and shall be adjusted within 1 mm to the
47、mid width of the element to be loaded (see Figure 3). 7.3 Determination of the maximum load for the test assembly To determine the maximum load for the test assembly, apply a load, increasing at a rate to give a uniform movement of the loading head, until failure of the test assembly occurs. The rat
48、e shall also be such that failure occurs in (300 120) s. Record the maximum load Fmaxin newton to an accuracy of 1 % and the mode of failure of the test assembly. 8 Expression of the results for a sample 8.1 Common statistical methods 8.1.1 Mean value A normal distribution is assumed. nPmni1= where
49、m is the mean value of the performance of the sample; Piis the performance of “i-th“ test assembly; n is the number of test assemblies in the sample. 8.1.2 Standard deviation 211)(12=nmPsniDIN EN 1533:2010-12 EN 1533:2010 (E) 12 where s is the standard deviation. All the other parameters are defined in 8.1.1. 8.1.3 Characteristic values Depending of the property, the characteristic values are either the 5th percentile or the 95th pe
