EN 14321-2:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Glass in building - Thermally toughened alkaline earth silicate safety glass - Part 2: Evaluation of conformity/Product standardSteklo v gradbeništvu – Kaljeno zemljoalkalijsko silikatno varnostno steklo – 2. del: Ocena skladnosti/standard za izdelekVerre dans la construction - Verre de silicate alcalino-terreux de sécurité trempé thermiquement - Partie 2 : Evaluation de la conformité/Norme produitGlas im Bauwesen - Thermisch vorgespanntes Erdalkali-Silicat-Einscheibensicherheitsglas - Teil 2: Konformitätsbewertung/ProduktnormTa slovenski standard je istoveten z:EN 14321-2:2005SIST EN 14321-2:2006en81.040.20ICS:SLOVENSKI
STANDARDSIST EN 14321-2:200601-februar-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14321-2August 2005ICS 81.040.20English versionGlass in building - Thermally toughened alkaline earth silicatesafety glass - Part 2: Evaluation of conformity/Product standardVerre dans la construction - Verre alcalinoterreux desécurité trempé thermiquement - Partie 2 : Evaluation de laconformité/Norme produitGlas im Bauwesen - Thermisch vorgespanntes Erdalkali-Silicat-Einscheibensicherheitsglas - Teil 2:Konformitätsbewertung/ProduktnormThis European Standard was approved by CEN on 27 June 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14321-2:2005: E

Factory production control.17 Annex B (informative)
Tests for factory production control.23 Annex C (informative)
Provisions for voluntary involvement of third party(ies).25 Annex ZA (normative)
Clauses of this European Standard addressing the provisions of EU Construction Products Directive.26 Bibliography.36

1 Scope This European Standard covers the evaluation of conformity and the factory production control of flat thermally toughened alkaline earth silicate safety glass for use in buildings.
NOTE 1 This also includes requirements subject to regulation.
NOTE 2 For glass products with electrical wiring or connections for e.g. alarm or heating purposes, this European Standard covers only wiring subject for electrical potential difference to earth less than 50 V a.c. or less than 75 V d.c. 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 356, Glass in Building
– Security glazing
– Testing and classification of resistance against manual attack. EN 410, Glass in Building
– Determination of luminous and solar characteristics of glazing. EN 673, Glass in Building
– Determination of thermal transmittance (U-value) – Calculation method.
EN 1063, Glass in Building
– Security glazing – Testing and classification of resistance against bullet attack. EN 1096-1, Glass in Building – Coated glass – Part 1: Definitions and classification EN 1096-2, Glass in building – Coated glass – Part 2:
Requirements and test methods for class A, B and S coatings. EN 1096-3, Glass in building – Coated glass – Part 3:
Requirements and test methods for class C and D coatings. EN 12600, Glass in Building – Pendulum test – Impact test method and classification for flat glass. EN 12758, Glass in Building – Glazing and airborne sound insulation – Product descriptions and determination of properties. EN 12898, Glass in Building – Determination of the emissivity. prEN 13474 (all parts), Glass in building – Design of glass panes. EN 13501-1, Fire classification of construction products and building elements – Part 1: Classification using test data from reaction to fire tests. EN 13501-2, Fire classification of construction products and building elements – Part 2: Classification using test data from fire resistance tests. prEN 13501-5, Fire classification of construction products and building elements – Part 5: Classification using test data from fire exposure to roof
tests. EN 13541, Glass in Building – Security glazing – Testing and classification of resistance against explosion pressure. EN 14178-1, Glass in Building – Basic alkaline earth silicate glass products – Part 1: Float glass. EN 14321-1:2005, Glass in Building – Thermally toughened alkaline earth silicate safety glass – Part 1: Definition and description.

3.3 product description document that details the relevant parameters, e.g. process conditions, structure, etc., for defining a product that complies with the standard. It includes specific reference(s) to characteristics that are modified by the production process. 3.4 significant change variation in performance beyond the permitted tolerance for the characteristic. 4 Requirements 4.1 Product description For conformity purposes the thermally toughened alkaline earth silicate glass manufacturer is responsible for the preparation and maintenance of the product description. This description shall describe the product and/or product families. Disclosure of the product description shall be at the discretion of the thermally toughened glass manufacturer or his agent except in the case of regulatory requirements. The description shall contain at least a normative part. The description may also contain an informative part, when the manufacturer foresees further development of the product. The normative part of the description shall contain the following minimum information:  a reference to EN 14321 Parts 1 and 2 and all other standards with which the manufacturer claims compliance.  the radiometric properties and durability of coated glass, i.e. coated glass that conforms with EN 1096-1, EN 1096-2, EN 1096-3, when those properties are changed, intentionally or unintentionally, by the thermal toughening process.
The definition of product families shall be consistent with the normative part of the product description. The substitution of materials shall maintain the conformity with the product description. The substituting material can be added to the product family and also the product description when compliance has been demonstrated.

Since the majority of the characteristics of Table 1 are not changed significantly by the thermal toughening process they shall be used for thermally toughened alkaline earth silicate safety glass. The exceptions shall be the characteristic bending strength (fg,k) and the resistance against sudden temperature changes and temperature differentials.

Table 1 — Information on the characteristics of basic alkaline earth silicate glass, according to EN 14178-1, used for the production of thermally toughened alkaline earth silicate safety glass
Characteristic
Symbol
Unit
- density - hardness - Young's modulus - Poisson's ratio - Characteristic bending strength - Resistance against sudden temperature changes and temperature differentials
- Specific heat capacity - Coefficient of linear expansion - Thermal conductivity (for U-value) - Mean refractive index to visible radiation - Emissivity - Light transmittance - Solar direct transmittance - Total energy transmittance
ρ HK0,1/20 E µ fg,k c α λ n ε τv τe g
kg/m³ GPa Pa Dimensionless Pa K J/(kg.K) K-1 W/(m.K) Dimensionless Dimensionless Dimensionless Dimensionless Dimensionless
If some coatings, i.e. coated glass conforming with the EN 1096 series, when thermally toughened change their radiometric properties the manufacturer shall refer to the following for the determination of the appropriate characteristics, etc.:  4.3.2.12 for the emissivity;  4.3.2.13 for the light transmittance and reflectance;  4.3.2.14 for the solar energy transmittance;  EN 1096-2 for the durability of A, B and S coatings;  EN 1096-3 for the durability of C and D coatings. 4.3.2 Determination of characteristics of thermally toughened alkaline earth silicate safety glass products 4.3.2.1 General If the thermally toughened glass manufacturer wishes to claim that any performance characteristic is independent of the production equipment used then the factory production control system shall be in accordance with this document including his specific process control conditions
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