1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 824:2013Thermal insulating productsfor building applications Determination of squarenessBS EN 824:2013 BRITISH STANDARDNational forewordThis British Standard is the UK impl
2、ementation of EN 824:2013. Itsupersedes BS EN 824:1995 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A list of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
3、secretary.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 78037 0ICS 91.100.60Compliance with a British Standard cann
4、ot 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 824:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 824 March 2013 ICS 9
5、1.100.60 Supersedes EN 824:1994English Version Thermal insulating products for building applications - Determination of squareness Produits isolants thermiques destins aux applications du btiment - Dtermination de lquerrage Wrmedmmstoffe fr das Bauwesen - Bestimmung der Rechtwinkligkeit This Europea
6、n Standard was 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 con
7、cerning such 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 i
8、nto its own 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,
9、 Germany, Greece, 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 KOMIT
10、EE FR NORMUNG 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 824:2013: EBS EN 824:2013EN 824:2013 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Te
11、rms and definitions 5 4 Principle 5 5 Apparatus . 5 6 Test specimens 5 7 Procedure . 6 8 Calculation and expression of results 8 9 Accuracy of measurement . 8 10 Test report 8 BS EN 824:2013EN 824:2013 (E) 3 Foreword This document (EN 824:2013) has been prepared by Technical Committee CEN/TC 88 “The
12、rmal insulating 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 withdr
13、awn at the latest 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 824:1994. The revisio
14、n of this standard contains no major changes, only minor corrections and clarifications of an editorial nature. This European Standard is one of a series of standards with specify test methods for determining dimensions and properties of thermal insulating materials and products. It supports a serie
15、s of products standards for thermal insulating materials and products which derive from the Council Directive of 21 December 1988 on the approximation of laws, regulations and administrative provisions of the Member States relating to construction products (Directive 89/106/EEC) through the consider
16、ation of the essential requirements. This European Standard has been drafted for applications in buildings but it may also be used in other areas where it is relevant. This European test standard is one of the following group of inter-related standards on test methods for determining dimensions and
17、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 for building applications Determination of thickness EN 824, T
18、hermal 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 Determination of compression behaviour EN 1602, Thermal insulating pr
19、oducts 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 humidity) EN 1604, Thermal insulating products for building app
20、lications 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 temperature conditions EN 1606, Thermal insulating products for buildi
21、ng applications Determination of compressive creep BS EN 824:2013EN 824:2013 (E) 4 EN 1607, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608, Thermal insulating products for building applications Determination of tensile strength
22、parallel to faces 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 dimensions of test specimens EN 12086, Thermal insulating product
23、s 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 products for building applications Determination of long-term water
24、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 insulating products for building applications Determination of
25、 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 applications Determination of behaviour under point load EN 12431, Therm
26、al 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, Thermal insulating materials for building applications Determin
27、ation 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 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic
28、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. BS EN 824:2013EN 824:2013 (E) 5 1 Scope This European Standard
29、 specifies the equipment and procedure for determining the deviation from squareness for length, width and/or thickness of full-size products. It is applicable to thermal insulating products. The method is normally applicable to products with straight edges. For products of other shape, e.g. profile
30、d edges, the method can be adapted accordingly. 2 Normative references This European Standard contains no normative references. 3 Terms and definitions For the purposes of this document, the following term and definition applies. 3.1 deviation from squareness distance from one limb of a perfect squa
31、re to the edge of the product at a given distance from a corner Note 1 to entry: See Figures 1 to 3. 4 Principle Apply a metal square to the product edges and measure the deviation between one limb of the metal square and the products edge (see Figure 1). 5 Apparatus 5.1 Flat surface. 5.2 Metal rule
32、 or metal tape, graduated in millimetres and permitting reading to 0,5 mm; 5.3 Metal square, with limbs at least 500 mm long with a deviation from squareness of not more than 0,1 mm when measured at 500 mm from the corner. Any test equipment which provides the same result with at least the same accu
33、racy may be used. 6 Test specimens 6.1 Dimensions of test specimens The test specimens shall be the full-size product. 6.2 Number of test specimens The 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
34、may be agreed between parties. 6.3 Conditioning of test specimens The test specimens should be stored for a least 6 h at (23 5) C. In case of dispute they shall be stored at (23 2) C and (50 5) % relative humidity for the time specified in the relevant product standard. BS EN 824:2013EN 824:2013 (E)
35、 6 7 Procedure 7.1 Determination of the squareness of the length and width edges 7.1.1 Test conditions The test should be carried out at (23 5) C. In case of dispute it shall be carried out at (23 2) C and (50 5) % relative humidity. 7.1.2 Test procedure Lay the test specimen on a flat surface and m
36、easure the deviation from squareness of length and width as follows: a) place the metal square along one of the sides of the test specimen with the right angle of the square aligned against the adjoining edge as in Figure 2; b) measure the distance abbetween the edge of the test specimen and the edg
37、e of the metal square, at a distance c from the corner, to the nearest 0,5 mm, where: 1) for the test specimens with a side of less than 500 mm, c is the maximum width or length of the specimen; 2) for the test specimen with a side equal to or greater than 500 mm, c is the length of the inner side o
38、f the square (see Figure 2); c) repeat for all corner of the test specimen having angles smaller than or equal to 90; d) if there is any significant deviation from linearity of the edges in the length or the width, this shall be reported as the maximum deviation from linearity amax. expressed in mil
39、limetres (see Figure 4). 7.2 Determination of the squareness of the thickness edge 7.2.1 Test conditions The test should be carried out at (23 5) C. In case of dispute it shall be carried out at (23 2) C and (50 5) % relative humidity. 7.2.2 Test procedure Lay the test specimen on a flat surface and
40、 measure the deviation from squareness of the thickness as follows: a) place the metal square on the flat surface against one edge of the test specimen as in Figure 3; b) measure the distance adto the nearest 0,5 mm between the edge of the test specimen and the edge of the square at the point of the
41、 greatest deviation along the side; c) repeat for all sides; d) turn the test specimen over and repeat items a) to c); e) report the largest figure as the deviation from squareness of the thickness edge. BS EN 824:2013EN 824:2013 (E) 7 See Figure 2. See Figure 3. Figure 1 Example of the measurement
42、of length and width edge squareness and of thickness edge squareness Key b length or width of the product depending on the corner which is controlled abdeviation from squareness of length or width c length of inner side of the square Figure 2 Example of the measurement of length and width edge squar
43、eness Key d thickness of the product addeviation from squareness Figure 3 Example of the measurement of thickness edge squareness BS EN 824:2013EN 824:2013 (E) 8 Figure 4 Example of measurement of deviation from linearity of the edge 8 Calculation and expression of results 8.1 Calculation of the dev
44、iation from the squareness of the length and width edges Calculate deviation from squareness Sbusing the following formula: caSbb= (1) where abis the measured value in millimetres; c is the measured value in millimetres. Express the deviation from squareness Sbin millimetres per metre and round to t
45、he nearest millimetre per metre. 8.2 Calculation of the deviation from squareness of the thickness edge Calculate deviation from squareness Sdusing the following formula: Sd= ad (2) where adis the maximum measured value in millimetres. Round the deviation, Sd, to the nearest millimetre and report th
46、e thickness of the test specimen. 9 Accuracy of measurement 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 inclu
47、de the following information: a) reference to this European Standard; b) product identification: BS EN 824:2013EN 824:2013 (E) 9 1) product name, factory, manufacturer or supplier; 2) production code number; 3) type of products; 4) packaging; 5) the form in which the product arrived at the laborator
48、y; 6) other information as a appropriate, e.g. nominal thickness, nominal density. c) test procedure: 1) pre-test history and sampling (e.g. who sampled and place of sampling); 2) conditioning; 3) deviation from Clauses 6 and 7, if any; 4) date of testing; 5) general information relating to the test
49、; 6) any occurrences which may have affected the results. Information 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 for deviation from squareness in millimetres/metres for the length and width and deviation from squareness in millimetres for thickness and any deviation from linearity. This page delib
