1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 825:2013Thermal insulating productsfor building applications Determination of flatnessBS EN 825:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implem
2、entation of EN 825:2013. Itsupersedes BS EN 825:1995 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A list of organizations represented on this committee can beobtained on request to its se
3、cretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 78038 7ICS 91.100.60Compliance with a British Standard cannot
4、 confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate Text affectedBS EN 825:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 825 March 2013 ICS 91.
5、100.60 Supersedes EN 825:1994English Version Thermal insulating products for building applications - Determination of flatness Produits isolants thermiques destins aux applications du btiment - Dtermination de la planit Wrmedmmstoffe fr das Bauwesen - Bestimmung der Ebenheit This European Standard w
6、as approved by CEN on 15 December 2012. 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 references concerning such
7、 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 a CEN member into its own
8、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 Macedonia, France, Germany, Gr
9、eece, 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 EUROPISCHES KOMITEE FR NORMUN
10、G Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 825:2013: EBS EN 825:2013EN 825:2013 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and defi
11、nitions 5 4 Principle 5 5 Apparatus . 5 6 Test specimens 5 7 Procedure . 6 8 Calculation and expression of results 7 9 Accuracy of measurement . 7 10 Test report 7 BS EN 825:2013EN 825:2013 (E) 3 Foreword This document (EN 825:2013) has been prepared by Technical Committee CEN/TC 88 “Thermal insulat
12、ing materials and products”, the secretariat of which is held by 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 September 2013, and conflicting national standards shall be withdrawn at the l
13、atest by September 2013. 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 responsible for identifying any or all such patent rights. This document supersedes EN 825:1994. The revision of this st
14、andard contains no major changes, only minor corrections and clarifications of an editorial nature. This European standard has been drafted for applications in building but it may also be used in other areas where it is relevant. This European test standard is one of the following group of interrela
15、ted standards on test methods for determining dimensions and properties of thermal insulation materials and products, all of which fall within the scope of CEN/TC 88: EN 822, Thermal insulating products for building applications Determination of length and width EN 823, Thermal insulating products f
16、or building applications Determination of thickness EN 824, Thermal insulating products for building applications Determination of squareness EN 825, Thermal insulating products for building applications Determination of flatness EN 826, Thermal insulating products for building applications Determin
17、ation of compression behaviour EN 1602, Thermal insulating products for building applications Determination of the apparent density EN 1603, Thermal insulating products for building applications Determination of dimensional stability under constant normal laboratory conditions (23 C/50 % relative hu
18、midity) EN 1604, Thermal insulating products for building applications Determination of dimensional stability under specified temperature and humidity conditions EN 1605, Thermal insulating products for building applications Determination of deformation under specified compressive load and temperatu
19、re conditions EN 1606, Thermal insulating products for building applications Determination of compressive creep EN 1607, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608, Thermal insulating products for building applications Deter
20、mination of tensile strength parallel to faces BS EN 825:2013EN 825:2013 (E) 4 EN 1609, Thermal insulating products for building applications Determination of short-term water absorption by partial immersion EN 12085, Thermal insulating products for building applications Determination of linear dime
21、nsions of test specimens EN 12086, Thermal insulating products for building applications Determination of water vapour transmission properties EN 12087, Thermal insulating products for building applications Determination of long-term water absorption by immersion EN 12088, Thermal insulating product
22、s for building applications Determination of long-term water absorption by diffusion EN 12089, Thermal insulating products for building applications Determination of bending behaviour EN 12090, Thermal insulating products for building applications Determination of shear behaviour EN 12091, Thermal i
23、nsulating products for building applications Determination of freeze-thaw resistance EN 12429, Thermal insulating products for building applications Conditioning to moisture equilibrium under specified temperature and humidity conditions EN 12430, Thermal insulating products for building application
24、s Determination of behaviour under point load EN 12431, Thermal insulating products for building applications Determination of thickness for floating floor insulating products EN 13793, Thermal insulating products for building applications Determination of behaviour under cyclic loading EN 13820, Th
25、ermal insulating materials for building applications Determination of organic content According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech R
26、epublic, Denmark, Estonia, Finland, Former Yugoslav 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. B
27、S EN 825:2013EN 825:2013 (E) 5 1 Scope This European Standard specifies the equipment and procedures for determining the deviation from flatness for full-size products. It is applicable to thermal insulating products. 2 Normative references This European Standard contains no normative references. 3
28、Terms and definitions For the purposes of this document, the following term and definition applies. 3.1 deviation from flatness maximum distance between the product placed on a flat surface with the convex side uppermost and the flat surface 4 Principle The maximum distance between the product place
29、d on a flat surface and the flat surface is measured. 5 Apparatus 5.1 Flat surface. 5.2 Metal rule or metal tape, graduated in millimetres and permitting reading to 0,5 mm. 5.3 Rigid frame with a movable measuring device consisting of a disc with a diameter of 30 mm, fixed to a graduated pin or a di
30、al gauge (graduated to at least 0,5 mm) applying a load of (2,0 0,1) N. Any test equipment which provides the same result with at least the same accuracy may be used. 6 Test specimens 6.1 Dimensions of test specimens The test specimen shall be the full-size product. 6.2 Number of test specimens The
31、number of test specimens shall be as specified in the relevant product standard. In the absence of a product standard, the number of test specimens may be agreed between parties. 6.3 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (23 5) C. In cases of dispute,
32、they shall be stored at (23 2) C and (50 5) % relative humidity for the time specified in the relevant product standard. BS EN 825:2013EN 825:2013 (E) 6 7 Procedure 7.1 Test conditions The test shall be carried out at (23 5) C. In cases of dispute, it shall be carried out at (23 2) C and (50 5) % re
33、lative humidity. 7.2 Test procedure 7.2.1 Lay the test specimen with the convex face, if any, uppermost on a flat surface. If there is a visible deviation from flatness only along the length or only along the width, make the measurement in accordance with 7.2.2 (see Figures 1a and 1b). If there is a
34、 deviation from flatness along both the length and width (warped products), make the measurement in accordance with 7.2.3 (see Figure 2). 7.2.2 Using the metal tape or rule, measure the maximum distance between the bottom edge of the specimen and the flat surface, Smax, to the nearest 0,5 mm. 7.2.3
35、Locate the maximum and minimum distances from the flat surface using the measuring device (see 5.3) as shown in Figure 2. At these positions read the distances Ymaxand Ymin,to the nearest 0,5 mm. If the test specimen only rests on three points, the possibility of alternative flatness measurements ex
36、ists and all shall be measured. a) Measurement of deviation from flatness in length b) Measurement of deviation from flatness in width Figure 1 Measurement of deviation from flatness BS EN 825:2013EN 825:2013 (E) 7 Figure 2 Location of maximum and minimum distances 8 Calculation and expression of re
37、sults For test specimens with deviation from flatness in one direction only, report the deviation as the maximum value measured in millimetres. For warped products, calculate the deviation from flatness, Smax, in millimetres, using the following formula: Smax= Ymax Ymin (1) 9 Accuracy of measurement
38、 NOTE It has not been possible to include a statement of the accuracy of the method in this edition of the standard, but it is intended to include such a statement when the standard is next revised. 10 Test report The test report shall include the following information: a) reference to this European
39、 Standard; b) product identification: 1) product name, factory, manufacturer or supplier; 2) production code number; 3) type of product; 4) packaging; 5) the form in which the product arrived at the laboratory; 6) other information as appropriate, e.g. nominal thickness, nominal density; c) test pro
40、cedure: 1) pre-test history and sampling (e.g. who sampled and place of sampling ); BS EN 825:2013EN 825:2013 (E) 8 2) conditioning; 3) deviation from Clauses 6 and 7, if any; 4) date of test; 5) general information relating to the test; 6) any occurrences which may have affected the results. Inform
41、ation about the apparatus and identity of the technician should be available in the laboratory but it need not be recorded in the report; d) results: all individual values and the maximum value of the deviation from flatness and the position where it occurred. This page deliberately left blankBSI is
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