Glass in building - Thermally toughened soda lime silicate safety glass - Part 1: Definition and description

This European Standard specifies tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat thermally toughened soda lime silicate safety glass for use in buildings.
Information on curved thermally toughened soda lime silicate safety glass is given in Annex A, but this product does not form part of this European Standard.
Other requirements, not specified in this European Standard, can apply to thermally toughened soda lime silicate 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 are specified in the appropriate product standard. Thermally toughened soda lime silicate safety glass, in this case, does not lose its mechanical or thermal characteristics.
This European Standard does not cover glass sandblasted after toughening.

Glas im Bauwesen - Thermisch vorgespanntes Kalknatron-Einscheibensicherheitsglas - Teil 1: Definition und Beschreibung

Diese Europäische Norm legt Grenzabmaße, Ebenheit, Kantenbearbeitung, Bruchverhalten und physikalische und mechanische Eigenschaften von einscheibigem, flachem, thermisch vorgespanntem Kalknatron Ein-scheiben¬sicherheitsglas für den Gebrauch im Bauwesen fest.
Anhang A enthält zwar Angaben zu gebogenem, thermisch vorgespanntem Kalknatron Einscheiben-sicherheitsglas, dieses Produkt ist aber kein Bestandteil dieser Norm.
Andere, nicht in dieser Norm aufgeführte Anforderungen können an thermisch vorgespanntes Kalknatron Einscheiben¬sicherheitsglas gestellt werden, das Bestandteil von Baugruppen, wie z. B. Verbundglas oder Mehrscheiben Isolierglas ist oder weiterverarbeitet, z. B. beschichtet wird. Die zusätzlichen Anforderungen sind in der entsprechenden Produktnorm festgelegt. In diesem Fall wird thermisch vorgespanntes Kalknatron Einscheibensicherheitsglas seine mechanischen oder thermischen Eigenschaften nicht verlieren.
Nach dem Vorspannen gestrahltes Glas ist nicht Gegenstand der vorliegenden Norm.

Verre dans la construction - Verre de silicate sodo-calcique de sécurité trempé thermiquement - Partie 1: Définition et description

La présente Norme européenne couvre les tolérances, la planéité, la finition des bords, la fragmentation et les caractéristiques physiques et mécaniques du verre de silicate sodo-calcique plat monolithique de sécurité trempé thermiquement destiné à être utilisé dans la construction.
Des renseignements sont donnés dans l'Annexe A sur le verre de silicate sodo-calcique de sécurité bombé trempé thermiquement, mais ce produit ne fait pas partie de la présente norme.
D'autres exigences, non spécifiées dans la présente norme, peuvent s'appliquer au verre de silicate sodo-calcique de sécurité trempé thermiquement intégré dans des ensembles, par exemple des ensembles en verre isolants ou en verre feuilleté, ou subissant un traitement supplémentaire, par exemple un revêtement. Les exigences supplémentaires sont spécifiées dans la norme de produit correspondante. Dans ce cas, le verre de silicate sodo-calcique de sécurité trempé thermiquement ne perd pas ses caractéristiques mécaniques ou thermiques.
Le verre sablé après trempe ne relève pas de la présente norme.

Steklo v gradbeništvu - Toplotno kaljeno natrij-kalcijevo silikatno varnostno steklo - 1. del: Definicija in opis

Ta evropski standard določa toleranco, ploskost, obdelavo robov, drobljenje ter fizične in mehanske lastnosti monolitnega ploskega toplotno kaljenega natrij-kalcijevega silikatnega varnostnega stekla, ki se uporablja v gradbeništvu.
Informacije o ukrivljenem toplotno kaljenem natrij-kalcijevem silikatnem varnostnem steklu so navedene v dodatku A, vendar ta proizvod ni del tega evropskega standarda.
Druge zahteve, ki niso določene v tem evropskem standardu, je mogoče uporabiti za toplotno kaljeno natrij-kalcijevo silikatno varnostno steklo, ki je vgrajeno v sestave, npr. lepljeno steklo ali izolacijsko steklo, ali pa ga je treba dodatno obdelati, npr. z nanosi. Dodatne zahteve so določene v ustreznem standardu za proizvod. Toplotno kaljeno natrij-kalcijevo silikatno varnostno steklo v tem primeru ne izgubi mehanskih ali toplotnih lastnosti.
Ta evropski standard ne obravnava stekla, ki je bilo po kaljenju peskano.

General Information

Status
Withdrawn
Public Enquiry End Date
29-Apr-2012
Publication Date
18-Oct-2015
Withdrawal Date
06-Oct-2019
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
04-Oct-2019
Due Date
27-Oct-2019
Completion Date
07-Oct-2019

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v gradbeništvu - Toplotno kaljeno natrij-kalcijevo silikatno varnostno steklo - 1. del: Definicija in opisGlas im Bauwesen - Thermisch vorgespanntes Kalknatron-Einscheibensicherheitsglas - Teil 1: Definition und BeschreibungVerre dans la construction - Verre de silicate sodo-calcique de sécurité trempé thermiquement - Partie 1: Définition et descriptionGlass in building - Thermally toughened soda lime silicate safety glass - Part 1: Definition and description81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:EN 12150-1:2015SIST EN 12150-1:2015en,fr,de01-november-2015SIST EN 12150-1:2015SLOVENSKI
STANDARDSIST EN 12150-1:20011DGRPHãþD



SIST EN 12150-1:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12150-1
September
t r s w ICS
z sä r v rä t r Supersedes EN
s t s w ræ sã t r r rEnglish Version
Glass in building æ Thermally toughened soda lime silicate safety glass æ Part
sã Definition and description Verre dans la construction æ Verre de silicate sodoæcalcique de sécurité trempé thermiquement æ Partie
sã Définition et description
Glas im Bauwesen æ Thermisch vorgespanntes KalknatronæEinscheibenæSicherheitsglas æ Teil
sã Definition und Beschreibung This European Standard was approved by CEN on
z August
t r s wä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t s w ræ sã t r s w ESIST EN 12150-1:2015



EN 12150-1:2015 (E) 2 Contents Page European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Glass products . 8 5 Fracture characteristics . 8 6 Dimensions and tolerances . 9 6.1 Nominal thickness and thickness tolerances . 9 6.2 Width and length (sizes) . 9 6.2.1 General . 9 6.2.2 Maximum and minimum sizes . 10 6.2.3 Tolerances and squareness . 10 6.2.4 Edge deformation produced by the vertical process . 11 6.3 Flatness . 11 6.3.1 General . 11 6.3.2 Measurement of overall bow . 13 6.3.3 Measurement of wave and roller wave . 14 6.3.4 Measurement of edge lift (for horizontally toughened glass only) . 15 6.3.5 Measurement of perimeter deformation of glass produced by air cushion toughening process . 16 6.3.6 Measurement of local distortion (for vertically toughened glass only) . 17 6.3.7 Limitation on overall bow, roller waves and edge lift for horizontally toughened glass . 17 6.3.8 Limitation on overall bow, wave and perimeter deformation for toughened glass manufactured by air cushion process. 18 6.3.9 Limitation on overall bow and local distortion for vertically toughened glass. 19 6.3.10 Other distortions . 19 7 Edge and/or surface work, holes, notches and cut-outs . 20 7.1 Warning . 20 7.2 Edge working of glass for toughening . 20 7.3 Profiled edges . 21 7.4 Round holes . 21 7.4.1 General . 21 7.4.2 Diameter of holes . 21 7.4.3 Limitations on position of holes . 21 7.4.4 Tolerances on hole diameters . 22 7.4.5 Tolerances on position of holes . 23 7.5 Holes/others . 23 7.6 Notches and cut-outs . 24 7.7 Shaped panes . 24 8 Fragmentation test . 24 SIST EN 12150-1:2015



EN 12150-1:2015 (E) 3 8.1 General . 24 8.2 Dimensions and number of test specimens . 24 8.3 Test procedure . 24 8.4 Assessment of fragmentation . 25 8.5 Minimum values from the particle count . 26 8.6 Selection of the longest particle . 27 8.7 Maximum length of longest particle . 27 9 Other physical characteristics . 27 9.1 Optical distortion . 27 9.1.1 Thermally toughened soda lime silicate safety glass produced by vertical toughening . 27 9.1.2 Thermally toughened soda lime silicate safety glass produced by horizontal toughening . 27 9.2 Anisotropy (iridescence) . 27 9.3 Thermal durability . 27 9.4 Mechanical strength . 28 9.5 Classification of performance under accidental human impact . 28 10 Marking . 28 Annex A (informative)
Curved thermally toughened soda lime silicate safety glass . 30 Annex B (informative)
Alternative method for the measurement of roller wave distortion . 31 B.1 Apparatus . 31 B.2 Method . 31 B.3 Limitations . 32 B.4 Alternative use of apparatus . 32 Annex C (informative)
Examples of particle count . 33 Annex D (informative)
Risk of spontaneous breakage of toughened glass due to nickel sulfide inclusion . 36 Bibliography . 37
SIST EN 12150-1:2015



EN 12150-1:2015 (E) 4 European foreword This document (EN 12150-1:2015) has been prepared by Technical Committee CEN/TC 129 “Glass 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 March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. 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 12150-1:2000. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. EN 12150, Glass in building — Thermally toughened soda lime silicate safety glass, consists of the following parts: — Part 1: Definitions and description; — Part 2: Evaluation of conformity/Product standard. This European Standard differs from EN 12150-1:2000 as follows: a) some figures have been revised and some new figures have been added; b) new terms and definitions have been included in Clause 3, e.g. air cushion process (3.6), edge lift (3.9) and roller wave distortion (3.13); c) further nominal thicknesses have been included in Table 1; d) Subclause 6.2.3 “Tolerances and squareness” has been completely revised; the squareness of rectangular glass panes is now expressed by the difference between its diagonals; e) Clauses 6 and 7 have been completely revised (including the air cushion manufacturing process); f) the normative annex “Determination of U value” has been deleted; g) 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 European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, 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. SIST EN 12150-1:2015



EN 12150-1:2015 (E) 5 Introduction Thermally toughened soda lime silicate safety glass has a safer breakage behaviour when compared with annealed glass. When it should be used to offer protection under accidental human impact, thermally toughened soda lime silicate 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. SIST EN 12150-1:2015



EN 12150-1:2015 (E) 6 1 Scope This European Standard specifies tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat thermally toughened soda lime silicate safety glass for use in buildings. Information on curved thermally toughened soda lime silicate safety glass is given in Annex A, but this product does not form part of this European Standard. Other requirements, not specified in this European Standard, can apply to thermally toughened soda lime silicate 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 are specified in the appropriate glass product standard. Thermally toughened soda lime silicate safety glass, in this case, does not lose its bending strength characteristics and its resistance to temperature differentials. Surface finished glasses (e.g. sandblasted, acid etched) after toughening are not covered by this European Standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 572-1, Glass in building — Basic soda lime silicate glass products — Part 1: Definitions and general physical and mechanical properties EN 572-2, Glass in building — Basic soda lime silicate glass products —Part 2: Float glass EN 572-4, Glass in building — Basic soda lime silicate glass products — Part 4: Drawn sheet glass EN 572-5, Glass in building — Basic soda lime silicate glass products — Part 5: Patterned glass EN 572-8, Glass in building — Basic soda lime silicate glass products — Part 8: Supplied and final cut sizes EN 1096-1, Glass in building — Coated glass - Part 1: Definitions and classification EN 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 14428, Shower enclosures — Functional requirements and test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 thermally toughened soda lime silicate safety glass thermally toughened safety 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 SIST EN 12150-1:2015



EN 12150-1:2015 (E) 7 Note 1 to entry: 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. 3.2 flat thermally toughened soda lime silicate safety glass thermally toughened soda lime silicate safety glass which has not been deliberately given a specific profile during manufacture 3.3 curved thermally toughened soda lime silicate safety glass thermally toughened soda lime silicate safety glass which has been deliberately given a specific profile during manufacture Note 1 to entry: See Annex A. 3.4 enamelled thermally toughened soda lime silicate safety glass thermally toughened soda lime silicate safety glass which has a ceramic frit fired into the surface during the toughening process Note 1 to entry: After toughening the ceramic frit becomes an integral part of the glass. Note 2 to entry: In the UK, this glass is also known as opaque thermally toughened soda lime silicate safety glass. Note 3 to entry: The application of the ceramic frit may be by a continuous process or discontinuous application, e.g. screen printing. The enamelled surface could be partially or wholly. 3.5 horizontal process process in which the glass is supported on horizontal rollers 3.6 air cushion process process in which the glass is supported by an air cushion with or without additional rollers Note 1 to entry: In this process the glass will be between horizontal and 45° of horizontal. 3.7 vertical process process in which the glass is suspended by tongs 3.8 edge deformation deformation of the edge cause by the tong marks for vertically toughened glass 3.9 edge lift distortion produced in horizontal toughened glass, at the leading and trailing edge of the plate 3.10 perimeter deformation distortion around the edge of toughened glass manufactured by air cushion process SIST EN 12150-1:2015



EN 12150-1:2015 (E) 8 3.11 local distortion local deformation of vertically toughened glass underneath the tong marks 3.12 overall bow deformation of the whole pane of toughened glass caused by the heating and cooling process 3.13 roller wave distortion distortion produced in horizontally toughened glass as a result of the glass during toughening process being in contact with the rollers 3.14 wave distortion distortion produced in air cushioned toughened glass as a result of the glass toughening process 4 Glass products Thermally toughened soda lime silicate safety glass is made from a monolithic glass generally corresponding to one of the following standards: — soda lime silicate glass according to EN 572-1; — float glass according to EN 572-2; — drawn sheet glass according to EN 572-4; — patterned glass according to EN 572-5; — supplied and final cut sizes according to EN 572-8; — coated glass according to EN 1096-1. Glass of nominal thicknesses other than those covered in the above standards is possible. 5 Fracture characteristics The fracture characteristics of thermally toughened soda lime silicate safety glass are directly related to the amount of surface compression. These properties are not size dependent. When the thermally toughened soda lime silicate safety glass is manufactured with the correct degree of surface compression then in the event of breakage thermally toughened soda lime silicate 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 thickness. 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 to the imposition of other stresses, i.e. from fixing or from reprocessing (e.g. laminating). SIST EN 12150-1:2015



EN 12150-1:2015 (E) 9 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 reproduced in Table 1. Table 1 — Nominal thicknesses and thickness tolerances Dimensions in millimetres Nominal thickness d Thickness tolerances for glass type Float Patterned Drawn sheet New antique drawn sheet 2 ± 0,2 not manufactured ± 0,2 not manufactured 3 ± 0,2 ± 0,5 ± 0,2 not manufactured 4 ± 0,2 ± 0,5 ± 0,2 ± 0,3 5 ± 0,2 ± 0,5 ± 0,3 not manufactured 6 ± 0,2 ± 0,5 ± 0,3 ± 0,3 8 ± 0,3 ± 0,8 ± 0,4 not manufactured 10 ± 0,3 ± 1,0 ± 0,5 not manufactured 12 ± 0,3 ± 1,5 ± 0,6 not manufactured 14 not manufactured ± 1,5 not manufactured not manufactured 15 ± 0,5 ± 1,5 not manufactured not manufactured 19 ± 1,0 ± 2,0 not manufactured not manufactured 25 ± 1,0 not manufactured not manufactured not manufactured 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 from the area of any tong marks (see Figure 2), which may be present. 6.2 Width and length (sizes) 6.2.1 General When thermally toughened soda lime silicate 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 the width, B, and which is the length, H, when related to its installed position. SIST EN 12150-1:2015



EN 12150-1:2015 (E) 10
Figure 1 — Examples of width, B, and length, H, relative to the pane shape 6.2.2 Maximum and minimum sizes For maximum and minimum sizes, the manufacturer should be consulted. 6.2.3 Tolerances and squareness The nominal dimensions for width and length being given, the finished pane shall not be larger than the nominal dimensions increased by the tolerance t, or smaller than the nominal dimensions reduced by the tolerance t. Limits are given in Table 2. The squareness of rectangular glass panes is expressed by the difference between their diagonals. The difference between the two diagonal lengths of the pane of glass shall not be larger than the deviation limit, v, as specified in Table 3. Table 2 — Tolerances on width, B, and length, H Dimensions in millimetres Nominal dimension of side,
B or H Tolerance, t nominal glass thickness,
d
8 nominal glass thickness,
d > 8
2 000 ± 2,0 ± 3,0 2 000 < B or H
3 000 ± 3,0 ± 4,0 > 3 000 ± 4,0 ± 5,0 Table 3 — Limit deviations for the difference between diagonals Dimensions in millimetres Limit deviation v on the difference between diagonals Nominal dimension B or H nominal glass thickness,
d
8 nominal glass thickness,
d
> 8
2 000
4
6 2 000 <
B or H
3 000
6
8 > 3 000
8
10 SIST EN 12150-1:2015



EN 12150-1:2015 (E) 11 6.2.4 Edge deformation produced by the vertical process The tongs used to suspend the glass during toughening result in surface depressions, known as tong marks (see Figure 2). The centres of the tong marks are situated up to a maximum of 20 mm in from the edge. A deformation of the edge less than 2 mm can be produced in the region of the tong mark and there may also be an area of optical distortion. These deformations are included in the tolerances in Table 2.
Key 1 deformation 2 up to 20 mm 3 tong mark 4 100 mm radius maximum area of optical distortion Figure 2 — Tong mark deformation 6.3 Flatness 6.3.1 General By the very nature of the toughening process, it is not possible to obtain a product as flat as annealed glass. This difference in flatness depends on the type of glass, e.g. coated etc., glass dimensions, i.e. the nominal thickness, the dimensions and the ratio between the dimensions, and the toughening process employed. There are six kinds of distortion: — overall bow (see Figure 3); — roller wave distortion (for horizontally toughened glass only) (see Figure 4); — air cushion wave distortion (for air cushion toughened glass only); — edge lift (for horizontally toughened glass only) (see Figure 5); — perimeter deformation (for toughened glass manufactured by air cushion process) (see Figure 10); NOTE 1 Overall bow, roller wave, edge lift and perimeter deformation can, in general, be accommodated by the framing system. — local distortion (for vertically toughened glass only) (see Figure 6). SIST EN 12150-1:2015



EN 12150-1:2015 (E) 12 NOTE 2 Local distortion needs to be allowed for within the glazing materials and the weather seals. For special requirements, it is advised to consult the manufacturer.
Key 1 deformation for calculating overall bow 2 B, or H, or diagonal length 3 thermally toughened glass Figure 3 — Representation of overall bow
Key 1 thermally toughened glass Figure 4 — Representation of roller wave distortion SIST EN 12150-1:2015



EN 12150-1:2015 (E) 13
Key 1 straight edge 2 edge lift 3 thermally toughened glass Figure 5 — Representation of edge lift
Key 1 local distortion 2 thermally toughened glass Figure 6 — Representation of local distortion 6.3.2 Measurement of overall bow The pane of glass shall be placed in a vertical position and supported on its longer side by two load bearing blocks at the quarter points (see Figure 7). For glass thinner than 4 mm nominal thickness the support will have an angle between 3° and 7° from the vertical. The deformation shall be measured along the edges of the glass and along the diagonals, as the maximum distance between a straight metal ruler, or a stretched wire, and the concave surface of the glass (see Figure 3). The value for the bow is then expressed as the deformation, in millimetres, divided by the measured length of the edge of the glass, or diagonal, in meter, as appropriate. The measurement shall be carried out at room temperature. Limit the measurement of the overall bow to a maximum pane size or specify dS. The maximum allowable values are given in Table 4 and Table 6. NOTE Results from this test method for glasses thinner than 4 mm may be inaccurate. SIST EN 12150-1:2015



EN 12150-1:2015 (E) 14 Dimensions in millimetres
Key 1 B or H 2 (B or H)/2 3 (B or H)/4 4 thermally toughened glass 5 support Figure 7 — Support conditions for the measurement of overall bow 6.3.3 Measurement of wave and roller wave 6.3.3.1 General The wave or roller wave is measured by means of a straight edge, or equivalent, being placed at right angles to the wave or roller wave and bridging from peak to peak of the waves (see Figure 8). NOTE This section deals with measurement using a straight edge and feeler gauges. An alternative method is described in Annex B. 6.3.3.2 Apparatus A straight edge: — length of between 300 mm and 400 mm. NOTE The minimal length of the straight edge needs to bridge two peaks of the roller waves. Feeler gauges: — various thicknesses in units of 0,05 mm. SIST EN 12150-1:2015



EN 12150-1:2015 (E) 15 6.3.3.3 Method Place the straight edge so that it bridges across adjacent peaks. Insert the feeler gauge between the glass surface and the straight edge. Increase the thickness of the feeler gauges until they just fill the gap between glass surface and the straight edge. Record the thickness of feeler gauge(s) to an accuracy of 0,05 mm. Repeat the measurement at several places over the glass surface. The measured wave or roller wave distortion is the maximum value measured. The maximum allowable values are given in Table 4 and Tabl
...

SLOVENSKI STANDARD
oSIST prEN 12150-1:2012
01-marec-2012
Steklo v gradbeništvu - Toplotno kaljeno natrij-kalcijevo silikatno varnostno steklo
- 1. del: Definicija in opis
Glass in building - Thermally toughened soda lime silicate safety glass - Part 1: Definition
and description
Glas im Bauwesen - Thermisch vorgespanntes Kalknatron-Einscheibensicherheitsglas -
Teil 1: Definition und Beschreibung
Verre dans la construction - Verre de silicate sodo-calcique de sécurité trempé
thermiquement - Partie 1: Définition et description
Ta slovenski standard je istoveten z: prEN 12150-1
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
oSIST prEN 12150-1:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 12150-1:2012

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oSIST prEN 12150-1:2012


EUROPEAN STANDARD
DRAFT
prEN 12150-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

January 2012
ICS 81.040.20 Will supersede EN 12150-1:2000
English Version
Glass in building - Thermally toughened soda lime silicate safety
glass - Part 1: Definition and description
Verre dans la construction - Verre de silicate sodo-calcique Glas im Bauwesen - Thermisch vorgespanntes Kalknatron-
de sécurité trempé thermiquement - Partie 1: Définition et Einscheibensicherheitsglas - Teil 1: Definition und
description Beschreibung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 129.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12150-1:2012: E
worldwide for CEN national Members.

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oSIST prEN 12150-1:2012
prEN 12150-1:2012 (E)
Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Glass products .8
5 Fracture characteristics .8
6 Dimensions and tolerances .8
6.1 Nominal thickness and thickness tolerances .8
6.2 Width and length (sizes) .9
6.2.1 General .9
6.2.2 Maximum and minimum sizes .9
6.2.3 Tolerances and squareness . 10
6.2.4 Edge deformation produced by the vertical process . 10
6.3 Flatness . 11
6.3.1 General . 11
6.3.2 Measurement of overall bow . 14
6.3.3 Measurement of roller wave . 14
6.3.4 Measurement of edge lift (for horizontal toughened only) . 15
6.3.5 Measurement of local distortion (for vertical toughened glass only) . 16
6.3.6 Limitation on overall bow, roller waves and edge lift for horizontal toughened glass . 17
6.3.7 Limitation on overall bow and local distortion for vertical toughened glass . 17
6.3.8 Other distortions . 18
7 Edge and/or surface work, holes, notches and cut-outs . 18
7.1 Warning . 18
7.2 Edge working of glass for toughening . 18
7.3 Profiled edges . 19
7.4 Round holes . 19
7.4.1 General . 19
7.4.2 Diameter of holes . 19
7.4.3 Limitations on position of holes . 19
7.4.4 Tolerances on hole diameters . 20
7.4.5 Tolerances on position of holes . 21
7.5 Holes/others . 22
7.6 Notches and cut-outs . 22
7.7 Shaped panes . 22
8 Fragmentation test. 22
8.1 General . 22
8.2 Dimensions and number of test specimens . 22
8.3 Test procedure . 23
8.4 Assessment of fragmentation . 23
8.5 Minimum values from the particle count . 24
8.6 Selection of the longest particle . 25
8.7 Maximum length of longest particle . 25
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9 Other physical characteristics . 25
9.1 Optical distortion . 25
9.1.1 Thermally toughened soda lime silicate safety glass produced by vertical toughening . 25
9.1.2 Thermally toughened soda lime silicate safety glass produced by horizontal toughening . 25
9.2 Anisotropy (iridescence) . 25
9.3 Thermal durability . 26
9.4 Mechanical strength . 26
9.5 Classification of performance under accidental human impact. 26
10 Marking . 26
Annex A (informative) Curved thermally toughened soda lime silicate safety glass . 27
Annex B (informative) Alternative method for the measurement of roller wave distortion . 28
B.1 Apparatus . 28
B.2 Method . 28
B.3 Limitations . 29
B.4 Alternative use of apparatus . 29
Annex C (informative) Examples of particle count . 30
Bibliography . 33

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Foreword
This document (prEN 12150-1:2012) has been prepared by Technical Committee CEN/TC 129 “Glass in
building”, the secretariat of which is held by NBN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12150-1:2000.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This European Standard “Glass in building – Thermally toughened soda lime silicate safety glass” consists of
the following parts:
 Part 1: Definitions and description;
 Part 2: Evaluation of conformity/Product standard.
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Introduction
Thermally toughened soda lime silicate safety glass has a safer breakage behaviour when compared with
annealed glass. When it should be used to offer protection under accidental human impact, thermally
toughened soda lime silicate 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.
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1 Scope
This European Standard specifies tolerances, flatness, edgework, fragmentation and physical and mechanical
characteristics of monolithic flat thermally toughened soda lime silicate safety glass for use in buildings.
Information on curved thermally toughened soda lime silicate safety glass is given in Annex A, but this product
does not form part of this European Standard.
Other requirements, not specified in this European Standard, can apply to thermally toughened soda lime
silicate 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 are specified in the appropriate
product standard. Thermally toughened soda lime silicate 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 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 572-1, Glass in building – Basic soda lime silicate glass products – Part 1: Definitions and general physical
and mechanical properties
EN 572-2, Glass in building – Basic soda lime silicate glass products – Part 2: Float glass
EN 572-4, Glass in building – Basic soda lime silicate glass products – Part 4: Drawn sheet glass
EN 572-5, Glass in building – Basic soda lime silicate glass products – Part 5: Patterned glass
EN 572-8, Glass in building – Basic soda lime silicate glass products – Part 8: Supplied and final cut sizes
EN 673, Glass in building – Determination of thermal transmittance (U value) – Calculation method
EN 1096-1, Glass in building – Coated glass – Part 1: Definitions and classification
EN 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 12600, Glass 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 soda lime silicate safety glass
thermally toughened soda lime silicate safety glass which has been deliberately given a specific profile during
manufacture
NOTE See Annex A.
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3.2
edge deformation
deformation of the edge cause of the tong marks
3.3
edge lift
edge dip
distortion produced in horizontal toughened glass, at the leading and trailing edge of the plate
NOTE This is a distortion produced by a reduction in surface flatness.
3.4
enamelled thermally toughened soda lime silicate safety glass
thermally toughened soda lime silicate safety glass which has a ceramic frit fired into the surface during the
toughening 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 soda lime silicate safety glass.
NOTE 3 The application of the ceramic frit may be by a continuous process or discontinuous application, e.g. screen
printing. The enamelled surface could be partially or wholly.
3.5
flat thermally toughened soda lime silicate safety glass
thermally toughened soda lime silicate safety glass which has not been deliberately given a specific profile
during manufacture
3.6
thermally toughened soda lime silicate safety 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
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 horizontal 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 horizontally toughened glass as a result of the glass during 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
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4 Glass products
Thermally toughened soda lime silicate safety glass is made from a monolithic glass generally corresponding
to one of the following standards:
— soda lime silicate glass according to EN 572-1;
— float glass according to EN 572-2;
— drawn sheet glass according to EN 572-4;
— patterned glass according to EN 572-5;
— supplied and final cut sizes according to EN 572-8;
— coated glass according to EN 1096-1.
Glass of nominal thicknesses other than those covered in the above standards is possible.
5 Fracture characteristics
The fracture characteristics of thermally toughened soda lime silicate safety glass are directly related to the
amount of surface compression, these properties are not size dependent.
When the thermally toughened soda lime silicate safety glass is manufactured with the correct degree of
surface compression then in the event of breakage thermally toughened soda lime silicate 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 thickness.
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
to 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 reproduced in Table 1.
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Table 1 — Nominal thicknesses and thickness tolerances
Dimensions in millimetres
Nominal Thickness tolerances for glass type
thickness d Float Patterned Drawn sheet New antique
drawn sheet
3 ± 0,2 ± 0,5 ± 0,2 not manufactured
4 ± 0,2 ± 0,5 ± 0,2 ± 0,3
5 ± 0,2 ± 0,5 ± 0,3 not manufactured
6 ± 0,2 ± 0,5 ± 0,3 ± 0,3
8 ± 0,3 ± 0,8 ± 0,4 not manufactured
10 ± 0,3 ± 1,0 ± 0,5 not manufactured
12 ± 0,3 ± 1,5 ± 0,6 not manufactured
14 not manufactured ± 1,5 not manufactured not manufactured
15 ± 0,5 ± 1,5 not manufactured not manufactured
19 ± 1,0 ± 2,0 not manufactured not manufactured
25 ± 1,0 not manufactured not manufactured not manufactured

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 from the area of any tong marks (see Figure 2), which may be present.
6.2 Width and length (sizes)
6.2.1 General
When thermally toughened soda lime silicate 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 the width, B, and which is the length, H, when related to its installed position.

Figure 1 — Examples of width, B, and length, H, relative to the pane shape
6.2.2 Maximum and minimum sizes
For maximum and minimum sizes, the manufacturer should be consulted.
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6.2.3 Tolerances and squareness
The nominal dimensions for width and length being given, the finished pane shall not be larger than the
nominal dimensions increased by the tolerance t, or smaller than the nominal dimensions reduced by the
tolerance t. Limits are given in Table 2.
The squareness of rectangular glass panes is expressed by the difference between its diagonals.
The difference between the two diagonal lengths of the pane of glass shall not be larger than the deviation
limit v as specified in Table 3.
Table 2 — Tolerances on width, B, and length, H
Dimensions in millimetres
Nominal dimension of side, Tolerance, t
B or H
nominal glass thickness, nominal glass thickness,
d ≤ 8 d > 8
≤ 2000 ± 2,0 ± 3,0
2000 < B or H ≤ 3000 ± 3,0 ± 4,0
> 3000 ± 4,0 ± 5,0

Table 3 — Limit deviations for the difference between diagonals
Dimensions in millimetres
Limit deviation v on the difference between diagonals
Nominal dimension nominal glass thickness, nominal glass thickness,
B or H d ≤ 8 d > 8
≤ 2000 ≤ 4 ≤ 6
2000 < B or H ≤ 3000 ≤ 6 ≤ 8
> 3000 ≤ 8 ≤ 10

6.2.4 Edge deformation produced by the vertical process
The tongs used to suspend the glass during toughening result in surface depressions, known as tong marks
(see Figure 2). The centres of the tong marks are situated up to a maximum of 20 mm in from the edge.
A deformation of the edge less than 2 mm can be produced in the region of the tong mark and there may also
be an area of optical distortion. These deformations are included in the tolerances in Table 2.
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Key
1 deformation
2 up to 20 mm
3 tong mark
4 100 mm radius maximum area of optical distortion
Figure 2 — Tong mark deformation
6.3 Flatness
6.3.1 General
By the very nature of the toughening process, it is not possible to obtain a product as flat as annealed glass.
This difference in flatness depends on the type of glass, e.g. coated etc., glass dimensions, i.e. the nominal
thickness, the dimensions and the ratio between the dimensions, and the toughening process employed, i.e.
vertical or horizontal.
There are four kinds of distortion:
— overall bow (see Figure 3);
— roller wave distortion (for horizontal toughened glass only) (see Figure 4);
— edge lift (for horizontal toughened glass only) (see Figure 5);
NOTE 1 Overall bow, roller wave and edge lift can, in general, be accommodated by the framing system.
— local distortion (for vertical toughened glass only) (see Figure 6).
NOTE 2 Local distortion needs to be allowed for within the glazing materials and the weather seals. For special
requirements, the manufacturers should be consulted.
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Key
1 deformation for calculating overall bow
2 B, or H, or diagonal length
3 thermally toughened glass
Figure 3 — Representation of overall bow

Key
1 thermally toughened glass
Figure 4 — Representation of roller wave distortion
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Key
1 straight edge
2 edge lift
3 thermally toughened glass
Figure 5 — Representation of edge lift
Dimension in millimetres

Key
1 B, or H, the side on which the tong marks occur
2 local distortion
3 thermally toughened glass
Figure 6 — Representation of local distortion
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6.3.2 Measurement of overall bow
The pane of glass shall be placed in a vertical position and supported on its longer side by two load bearing
blocks at the quarter points (see Figure 7).
The deformation shall be measured along the edges of the glass and along the diagonals, as the maximum
distance between a straight metal ruler, or a stretched wire, and the concave surface of the glass (see
Figure 3).
The value for the bow is then expressed as the deformation, in millimetres, divided by the measured length of
the edge of the glass, or diagonal, in meter, as appropriate.
The measurement shall be carried out at room temperature.

Key
1 B or H
2 (B or H)/2
3 (B or H)/4
4 thermally toughened glass
5 support
Figure 7 — Support conditions for the measurement of overall bow
6.3.3 Measurement of roller wave
6.3.3.1 General
The roller wave is measured by means of a straight edge, or equivalent, being placed at right angles to the
roller wave and bridging from peak to peak of the wave (see Figure 8).
NOTE This section deals with measurement using a straight edge and feeler gauges. An alternative method is
described in Annex B.
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6.3.3.2 Apparatus
A straight edge: — length of between 300 mm and 400 mm.
NOTE The actual length of straight edge required will depend upon the wavelength of the roller wave.
Feeler gauges: — various thicknesses in units of 0,05 mm.
6.3.3.3 Method
Place the straight edge so that it bridges across adjacent peaks. Insert the feeler gauge between the glass
surface and the straight edge. Increase the thickness of the feeler gauges until they just fill the gap between
glass surface and the straight edge. Record the thickness of feeler gauge(s) to an accuracy of 0,05 mm.
Repeat the measurement at several places over the glass surface.
The measured roller wave distortion is the maximum value measured. The maximum values are given in
Table 4.
6.3.3.4 Limitations
The following limitations apply.
 The roller wave can only be measured on panes with a dimension greater than 600 mm measured at right
angles to the roller waves.
 The roller wave cannot be measured in an exclusion area that is 150 mm from the edges of the pane.
The apparatus should not be used in the area of these 150 mm.
 Panes with an overall bow shall be laid on a flat support. This will allow gravity to flatten out the overall
bow and hence give a truer result for the roller wave.
Dimensions in millimetres

Key
1  straight edge
2  roller wave distortion
3 thermally toughened glass
Figure 8 — Measurement of roller wave distortion
6.3.4 Measurement of edge lift (for horizontal toughened only)
The glass shall be placed on a flat support with the edge lift overhanging the edge of the support by between
50 mm and 100 mm.
The straight edge is placed on the peaks of the roller waves and the gap between the ruler and the glass
measured using a feeler gauge (see Figure 9).
The maximum values for edge lift are given in Table 5.
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The values in Table 5 only apply to thermally toughened glass having edgework complying with Figures 11 to
Figure 14. For profiled edges or other types of edgework contact the manufacturer.

Key
1 straight edge
2 edge lift
3 thermally toughened glass
4 flat support
Figure 9 — Measurement of edge lift
6.3.5 Measurement of local distortion (for vertical toughened glass only)
Local distortion can occur over relatively short distances on the edge of the vertical toughened glass that
contains the tong marks (see Figure 2).
Local distortion shall be measured over a limited length of 300 mm by using a straight ruler parallel to the
edge at a distance of 25 mm from the edge of the glass (see Figure 10).
Local distortion is expressed as millimetres/ 300 mm length.
Dimensions in millimetres

Key
1 straight edge
2 local distortion
3 thermally toughened glass
Figure 10 — Measurement of local distortion
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