1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13024-1:2011Glass in building Thermallytoughened borosilicate safetyglassPart 1: Definition and descriptionBS EN 13024-1:2011 BRITISH STANDARDNational forewordThis British
2、Standard is the UK implementation of EN 13024-1:2011.It supersedes BS EN 13024-1:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/520/1, Basic and transformed glass products.A list of organizations represented on this committee can beobtained on r
3、equest to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 74199 9ICS 81.040.20Compliance with a British Standard cannot confer immunity fromleg
4、al obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS EN 13024-1:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13024-1 November 2011 ICS 81.040.20 Supe
5、rsedes EN 13024-1:2002English Version Glass in building - Thermally toughened borosilicate safety glass - Part 1: Definition and description Verre dans la construction - Verre borosilicate de scurit tremp thermiquement - Partie 1: Dfinition et descriptionGlas im Bauwesen - Thermisch vorgespanntes Bo
6、rosilicat-Einscheiben-Sicherheitsglas - Teil 1: Definition und Beschreibung This European Standard was approved by CEN on 25 September 2011. 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 nati
7、onal standard without any alteration. Up-to-date lists and bibliographical references concerning 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 ver
8、sion in any other language made by translation under the responsibility of a CEN member into 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,
9、Czech Republic, Denmark, Estonia, 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. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT
10、EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13024-1:2011: EBS EN 13024-1:2011EN 13024-1:2011 (E) 2 Contents Page
11、Foreword 4Introduction .51 Scope 62 Normative references 63 Terms and definitions .64 Glass products .75 Fracture characteristics 86 Dimensions and tolerances 86.1 Nominal thickness and thickness tolerances .86.2 Width and length (sizes) .96.2.1 General 96.2.2 Maximum and minimum sizes 96.2.3 Tolera
12、nces and squareness .96.2.4 Edge deformation produced by the vertical process 106.3 Flatness . 106.3.1 General . 106.3.2 Measurement of overall bow . 136.3.3 Measurement of roller wave 146.3.4 Measurement of edge lift (for horizontally toughened only) 156.3.5 Measurement of local distortion (for ver
13、tically toughened glass only) 166.3.6 Limitation on overall bow, roller waves and edge lift for horizontally toughened glass 176.3.7 Limitation on overall bow and local distortion for vertically toughened glass 176.3.8 Other distortions . 177 Edge and/or surface work, holes, notches and cut-outs 187
14、.1 Warning 187.2 Edge working of glass for toughening . 187.3 Profiled edges . 197.4 Round holes 197.4.1 General . 197.4.2 Diameter of holes 197.4.3 Limitations on position of holes . 197.4.4 Tolerances on hole diameters . 207.4.5 Tolerances on position of holes 217.5 Holes/others 217.6 Notches and
15、cut-outs . 227.7 Shaped panes 228 Fragmentation test 228.1 General . 228.2 Dimensions and number of test specimens 228.3 Test procedure 228.4 Assessment of fragmentation . 238.5 Minimum values from the particle count 248.6 Selection of the longest particle . 258.7 Maximum length of longest particle
16、. 259 Other physical characteristics 259.1 Optical distortion 259.1.1 Thermally toughened borosilicate safety glass produced by vertical toughening . 259.1.2 Thermally toughened borosilicate safety glass produced by horizontal toughening . 25BS EN 13024-1:2011EN 13024-1:2011 (E) 3 9.2 Anisotropy (ir
17、idescence) 259.3 Thermal durability . 259.4 Mechanical strength 269.5 Classification of performance under accidental human impact. 2610 Marking . 26Annex A (informative) Curved thermally toughened borosilicate safety glass 27Annex B (informative) Alternative method for the measurement of roller wave
18、 distortion 28B.1 Apparatus . 28B.2 Method 28B.3 Limitations . 29B.4 Alternative use of apparatus 29Annex C (informative) Example of particle count 30Bibliography 33BS EN 13024-1:2011EN 13024-1:2011 (E) 4 Foreword This document (EN 13024-1:2011) has been prepared by Technical Committee CEN/TC 129 “G
19、lass in building”, the secretariat of which is held by NBN. 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 May 2012, and conflicting national standards shall be withdrawn at the latest by May 201
20、2. 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 13024-1:2002. This document has been prepared under a m
21、andate given to CEN by the European Commission and the European Free Trade Association. EN 13024 is divided into the following parts: EN 13024-1, Glass in building Thermally toughened borosilicate safety glass Part 1: Definition and description; EN 13024-2, Glass in building Thermally toughened boro
22、silicate safety glass Part 2: Evaluation of conformity/Product standard. This European Standard differs from EN 13024-1:2002 as follows: a) some figures have been revised and new figures have been added; b) in Clause 3, new terms and definitions have been added; c) Subclause 6.2.3 “Tolerances and sq
23、uareness“ has been completely revised; the squareness of rectangular glass panes is now expressed by the difference between its diagonals and the limits of squareness are described by deviation between diagonals; d) Clauses 6 and 7 have been completely revised; e) normative Annex A “Determination of
24、 U value“ has been deleted; f) a new informative Annex dealing with an alternative method for the measurement of roller wave distortion has been added. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europ
25、ean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and th
26、e United Kingdom. BS EN 13024-1:2011EN 13024-1:2011 (E) 5 Introduction Thermally toughened borosilicate safety glass has a higher thermal shock resistance and a safer breakage behaviour when compared with annealed glass. When it should be used to offer protection under accidental human impact, therm
27、ally toughened borosilicate safety glass also should be classified according to EN 12600. NOTE CEN/TC 129/WG 8 is producing standards for the determination of the design strength of glass and is preparing a design method. BS EN 13024-1:2011EN 13024-1:2011 (E) 6 1 Scope This European Standard specifi
28、es tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat thermally toughened borosilicate safety glass for use in buildings. Information on curved thermally toughened borosilicate safety glass is given in Annex A, but this product does not form
29、part of this standard. Other requirements, not specified in this standard, can apply to thermally toughened borosilicate safety glass which is incorporated into assemblies, e.g. laminated glass or insulating glass units, or undergo an additional treatment, e.g. coating. The additional requirements a
30、re specified in the appropriate product standard. Thermally toughened borosilicate safety glass, in this case, does not lose its mechanical or thermal characteristics. This European Standard does not cover glass sandblasted after toughening. 2 Normative references The following referenced documents
31、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 1096-1, Glass in building Coated glass Part 1: Definitions and classification EN
32、1288-3, Glass in building Determination of the bending strength of glass Part 3: Test with specimen supported at two points (four point bending) EN 1748-1-1, Glass in building Special basic products Borosilicate glasses Part 1-1: Definitions and general physical and mechanical properties EN 12600, G
33、lass in building Pendulum tests Impact test method and classification for flat glass 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 curved thermally toughened borosilicate safety glass thermally toughened borosilicate safety glass which has
34、been deliberately given a specific profile during manufacture NOTE The information is given in Annex A. 3.2 edge deformation deformation of the edge because of the tong marks 3.3 edge lift (also referred to as edge dip) distortion produced in horizontal toughened glass, at the leading and trailing e
35、dge of the plate NOTE This is a distortion produced by a reduction in surface flatness. BS EN 13024-1:2011EN 13024-1:2011 (E) 7 3.4 enamelled thermally toughened borosilicate safety glass thermally toughened borosilicate safety glass which has a ceramic frit fired into the surface during the toughen
36、ing process NOTE 1 After toughening, the ceramic frit becomes an integral part of the glass. NOTE 2 In the UK, this glass is also known as opaque thermally toughened borosilicate safety glass. NOTE 3 The application of the ceramic frit may be by a continuous process or discontinuous application, e.g
37、. screen printing. The enamelled surface could be partially or wholly covered. 3.5 flat thermally toughened borosilicate safety glass thermally toughened borosilicate safety glass which has not been deliberately given a specific profile during manufacture 3.6 thermally toughened borosilicate safety
38、glass glass within which a permanent surface compressive stress, additionally to the basic mechanical strength, has been induced by a controlled heating and cooling process in order to give it greatly increased resistance to mechanical and thermal stress and prescribed fragmentation characteristics
39、NOTE The mechanical properties, i.e. thermal durability and mechanical strength, and safety properties, i.e. fragmentation characteristics, are generated by the level of surface compression. These properties are not size dependent. 3.7 horizontal process process in which the glass is supported on ho
40、rizontal rollers 3.8 local distortion local deformation of vertically toughened glass underneath the tong marks 3.9 overall bow deformation of the whole pane of horizontally and vertically toughened glass caused by the heating and cooling process 3.10 roller wave distortion distortion produced in ho
41、rizontally toughened glass as a result of the glass during the toughening process being in contact with the rollers NOTE This is a surface distortion produced by a reduction in surface flatness. 3.11 vertical process process in which the glass is suspended by tongs 4 Glass products Thermally toughen
42、ed borosilicate safety glass is made from a monolithic glass generally corresponding to one of the following standards: borosilicate glass according to EN 1748-1-1; coated glass according to EN 1096-1. BS EN 13024-1:2011EN 13024-1:2011 (E) 8 Glass of nominal thicknesses other than those covered in t
43、he above standards is possible. 5 Fracture characteristics The fracture characteristics of thermally toughened borosilicate safety glass are directly related to the amount of surface compression; these properties are not size dependent. When the thermally toughened borosilicate safety glass is manuf
44、actured with the correct degree of surface compression then in the event of breakage thermally toughened borosilicate safety glass fractures into numerous small pieces, the edges of which are generally blunt. NOTE 1 The degree of surface compression required is dependent upon glass type and thicknes
45、s. NOTE 2 The fracture characteristics of glass are unaffected by temperatures between 50 C and + 100 C. The fragmentation described in Clause 8 is undertaken on unrestrained test specimens. The fragmentation in service may not always correspond to that determined during the fragmentation test due t
46、o the imposition of other stresses, i.e. from fixing or from reprocessing (e.g. laminating). 6 Dimensions and tolerances 6.1 Nominal thickness and thickness tolerances The nominal thicknesses and thickness tolerances are those given in the relevant product standard (see Clause 4), some of which are
47、reproduced in Table 1. Table 1 Nominal thicknesses and thickness tolerances Dimensions in millimetres Nominal Thickness tolerances for glass type thickness d Float Drawn sheet, rolled, cast 3 0,2 - 0,4 / + 0,5 4 0,2 - 0,4 / + 0,5 5 0,2 - 0,4 / + 0,5 6 0,2 - 0,4 / + 0,5 6,5 0,2 - 0,4 / + 0,5 7,5 0,3
48、- 0,4 / + 0,5 8 0,3 - 0,4 / + 0,8 9 0,3 - 0,9 / + 1,0 10 0,3 - 0,9 / + 1,0 11 0,3 - 0,9 / + 1,0 12 0,3 - 0,9 / + 1,0 13 0,5 - 0,9 / + 1,0 15 0,5 - 0,9 / + 1,0 The thickness of a pane shall be determined as for the basic product. The measurement shall be taken at the centres of the 4 sides, and away
49、from the area of any tong marks (see Figure 2), which may be present. BS EN 13024-1:2011EN 13024-1:2011 (E) 9 6.2 Width and length (sizes) 6.2.1 General When thermally toughened borosilicate safety glass dimensions are quoted for rectangular panes, the first dimension shall be the width, B, and the second dimension the length, H, as shown in Figure 1. It shall be made clear which dimension is
