EN 14179-1:2005

SLOVENSKI STANDARD
01-september-2005
Steklo v gradbeništvu – HS-preskus kaljenega natrijevega-kalcijevega-silikatnega
varnostnega stekla – 1. del: Definicije in opis
Glass in building - Heat soaked thermally toughened soda lime silicate safety glass - Part
1: Definition and description
Glas im Bauwesen - Heißgelagertes thermisch vorgespanntes Kalknatron-
Einscheibensicherheitsglas - Teil 1: Definition und Beschreibung
Verre dans la construction - Verre de silicate sodo-calcique de sécurité trempé et traité
Heat Soak - Partie 1: Définition et description
Ta slovenski standard je istoveten z: EN 14179-1:2005
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 14179-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 81.040.20
English version
Glass in building - Heat soaked thermally toughened soda lime
silicate safety glass - Part 1: Definition and description
Verre dans la construction - Verre de silicate sodo-calcique Glas im Bauwesen - Heißgelagertes thermisch
de sécurité trempé et traité Heat Soak - Partie 1: Définition vorgespanntes Kalknatron-Einscheibensicherheitsglas -
et description Teil 1: Definition und Beschreibung
This European Standard was approved by CEN on 19 May 2005.
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 national
standards may be obtained on application to the Central Secretariat 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 language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14179-1:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction.5
1 Scope .6
2 Normative references .6
3 Terms and definitions.6
4 Glass products.7
5 Manufacturing processes.7
5.1 General .7
5.2 Toughening process.7
5.3 Heat soak process cycle .8
6 Heat soak process system .9
6.1 General .9
6.2 Oven.9
6.3 Glass support.9
6.4 Glass separation .9
6.5 Calibration .11
7 Fracture characteristics .11
8 Dimensions and tolerances.11
8.1 Nominal thickness and thickness tolerances.11
8.2 Width and length (sizes).12
8.3 Flatness .14
9 Edge work, holes, notches and cut-outs.17
9.1 Warning .17
9.2 Edge working of glass for toughening .17
9.3 Profiled edges .18
9.4 Round holes .18
9.5 Notches and cut-outs .21
9.6 Shaped panes.21

10 Fragmentation test.22
10.1 General .22
10.2 Dimensions and number of test specimens .22
10.3 Test procedure .22
10.4 Assessment of fragmentation.23
10.5 Minimum values from the particle count.24
10.6 Selection of the longest particle .24
10.7 Maximum length of longest particle .24
11 Other physical characteristics .24
11.1 Optical distortion .24
11.2 Anisotropy (iridescence) .24
11.3 Thermal durability.25
11.4 Mechanical strength .25
11.5 Classification of performance under accidental human impact.25
12 Marking .25
Annex A (normative) Heat soak process system calibration test .26
A.1 Calibration criteria .26
A.2 Loading of oven and position for glass surface temperature measurement .26
A.3 Procedure .27
A.4 Records .27
A.5 Interpretation of the calibration test.28
Annex B (informative) Curved heat soaked thermally toughened soda lime silicate safety glass .37
Annex C (informative) Examples of particle count .38

Foreword
This European Standard (EN 14179-1:2005) has been prepared by Technical Committee CEN/TC 129 “Glass
in building”, the secretariat of which is held by IBN/BIN.
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 December 2005, and conflicting national standards shall be withdrawn
at the latest by December 2005.
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association.
This Part of the European Standard does not stand-alone, it is a part of one standard:
 EN 14179-1: Glass in building – Heat soaked thermally toughened soda lime silicate safety glass –
Part 1: Definition and description;
 EN 14179-2: Glass in building – Heat soaked thermally toughened soda lime silicate safety glass –
Part 2: Evaluation of conformity/Product standard.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
Introduction
Heat soaked thermally toughened soda lime silicate safety glass has a safer breakage behaviour when
compared with annealed glass. It also has a known level of residual risk of spontaneous breakage arising from
the possible presence of critical nickel sulphide (NiS) inclusions in the thermally toughened soda lime silicate
glass.
NOTE 1 This case deals with extremely large quantities of glass. These quantities are dealt with on a statistical basis.
Therefore it is impossible to select a quantity of heat soaked thermally toughened soda lime silicate safety glass, for a
building, and claim that ‘no break’ by NiS inclusion can occur. The breakage of heat soaked thermally toughened soda
lime silicate safety glass caused by other influences is excluded.[sl1]
When used to offer protection under accidental human impact, heat soaked thermally toughened soda lime
silicate safety glass also should be classified according to EN 12600 (all parts).
NOTE 2 CEN/TC 129/WG 8 is producing standards for the determination of the design strength of glass and is
preparing a design method.
The European Committee for Standardization (CEN) draws attention to the fact that it is claimed that
compliance with this document may involve the use of a patent concerning Heat Soak Tests. CEN takes no
position concerning the evidence, validity and scope of this patent right. The holder of this patent right has
assured CEN that he/she is willing to negotiate licences under reasonable and non-discriminatory terms and
conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right
is registered with CEN. Information may be obtained from:
SAINT-GOBAIN GLASS FRANCE
Les Miroirs – 92096 La Défense Cedex
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights other than those identified above. CEN shall not be held responsible for identifying any or all such
patent rights.
1 Scope
This European Standard specifies the heat soak process system together with tolerances flatness, edgework,
fragmentation and physical and mechanical characteristics of monolithic flat heat soaked thermally toughened
soda lime silicate safety glass for use in buildings.
Information on curved heat soak thermally toughened soda lime silicate safety glass is given in Annex B, but
this product does not form part of this European Standard.
Other requirements, not specified in this European Standard, can apply to heat soaked thermally toughened
soda lime silicate safety glass which is incorporated into assemblies, e.g. laminated glass or insulating units,
or undergo an additional treatment, e.g. coating. The additional requirements are s
...