prEN 1748-1-2

Glass in building - Special basic products - Borosilicate float glass - Part 1-2: Product standard

This European standard covers the evaluation of conformity and the factory production control of basic borosilicate float glass for use in buildings.
For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply.

Glas im Bauwesen - Spezielle Basiserzeugnisse - Borosilikat-Floatglas - Teil 1-2: Produktnorm

Dieses Europäische Norm umfasst die Konformitätsbewertung und die werkseigene Produktionskontrolle von Basiserzeugnissen aus gefloatetem Borosilicatglas zur Verwendung im Bauwesen.
Für Glaserzeugnisse mit elektrischer Verkabelung oder Anschlüssen, wie z. B. Alarm- oder Heizungsanwendungen, können andere Richtlinien, z. B. die Niederspannungsrichtlinie, gelten.

Verre dans la construction - Produits de base spéciaux - Glace borosilicate - Partie 1-2 : Norme de produit

La présente Norme européenne couvre l'évaluation de la conformité et le contrôle de la production en usine de la glace borosilicate de base utilisée dans la construction.
Pour les produits verriers couplés à des fils ou branchements électriques pour les fonctions d'alarme ou de chauffage par exemple, d'autres directives comme la Directive Basse Tension peuvent s'appliquer.

Steklo v gradbeništvu - Posebni osnovni proizvodi - Borosilikatno ravno steklo - 1-2. del: Standard za proizvod

General Information

• Status: Not Published
• Publication Date: 17-Feb-2019
• ICS: 81.040.20 - Glass in building
• Technical Committee: CEN/TC 129 - Glass in building
• Drafting Committee: CEN/TC 129/WG 1 - Basic glass products
• Current Stage: 4098 - Decision to abandon - Enquiry
• Start Date: 23-Jan-2020
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/135 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on flat glass, profiled glass and glass block products
• Ref Project: oSIST prEN 1748-1-2:2017 - Glass in building - Special basic products - Borosilicate float glass - Part 1-2: Product standard

Relations

• Revises: EN 1748-1-2:2004 - Glass in building - Special basic products - Borosilicate glasses - Part 1-2: Evaluation of conformity/Product standard
• Effective Date: 18-Jan-2023

Overview

The European standard prEN 1748-1-2:2017 titled Glass in building - Special basic products - Borosilicate float glass - Part 1-2: Product standard specifies the evaluation of conformity and requirements for the factory production control (FPC) of borosilicate float glass used in buildings. Developed under the Technical Committee CEN/TC 129, this standard aligns with EU construction product regulations and provides a comprehensive framework for quality, performance, and production consistency of borosilicate glass products.

This standard supersedes the earlier EN 1748-1-2:2004 and integrates recent regulatory updates, including essential characteristics related to solar factor, mechanical resistance, and durability. It applies primarily to basic borosilicate float glass and covers product description, performance characteristics, testing, and factory inspections. Applications involving electrical components in glass may require compliance with additional directives, such as the Low Voltage Directive.

Key Topics

• Product Description and Scope
  The manufacturer must prepare and maintain detailed product descriptions covering product families and process parameters to ensure conformity. This forms the basis for product type characterization.

• Performance Characteristics
  Essential characteristics covered include mechanical strength (bending strength), durability, solar factor (g-value), and spectrophotometric properties. These are critical for specifying glass performance in structural and environmental conditions.

• Assessment and Verification of Constancy of Performance (AVCP)
  The standard details procedures for type testing, factory production control, initial factory inspections, continuous surveillance, and assessment protocols to guarantee ongoing product quality.

• Factory Production Control (FPC)
  Emphasis is placed on documented, permanent, and internal control measures within manufacturing facilities. This includes organization responsibilities, equipment calibration, inspection schedules, and handling of non-conforming products.

• Marking and Labelling
  Guidelines for product marking ensure traceability and clear communication of compliance with this European Standard as well as conformity to relevant EU regulations.

Applications

• Building Construction
  Borosilicate float glass standardized under prEN 1748-1-2 is suitable for architectural glazing in commercial and residential buildings, providing enhanced durability and thermal properties.

• Specialized Glazing Products
  The standard supports applications requiring high resistance to thermal stress, chemical durability, and precise optical characteristics, such as laboratory environments, façades, and solar control glazing.

• Safety and Performance Specifications
  The product standard integrates with fire classification, safety glazing, and load resistance parameters (through related standards), making it essential for designers, architects, and glass manufacturers aiming for certified performance.

Related Standards

• prEN 1748-1-1:2017 - Definitions and general physical and mechanical properties of borosilicate float glass
• EN 410 - Determination of luminous and solar characteristics of glazing
• EN 673 - Calculation method for thermal transmittance (U value)
• EN 12600 - Pendulum impact test for flat glass
• EN 356 - Security glazing testing against manual attack
• EN 13501 series - Fire classification of construction products
• prEN 16612 - Determination of load resistance of glass panes by calculation and testing

These complementary standards enhance the comprehensive assessment of borosilicate float glass performance in building applications.

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Keywords: borosilicate float glass, glass in building, factory production control, AVCP, solar factor, bending strength, product standard, European standard, construction glass compliance, building glazing, durable glass products, CEN/TC 129, EN 1748-1-2, glass performance testing

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2017
Steklo v gradbeništvu - Posebni osnovni proizvodi - Borosilikatno ravno steklo - 1-
2. del: Standard za proizvod
Glass in building - Special basic products - Borosilicate float glass - Part 1-2: Product
standard
Glas im Bauwesen - Spezielle Basiserzeugnisse - Borosilikat-Floatglas - Teil 1-2:
Produktnorm
Verre dans la construction - Produits de base spéciaux - Glace borosilicate - Partie 1-2 :
Norme de produit
Ta slovenski standard je istoveten z: prEN 1748-1-2
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2017
ICS 81.040.20 Will supersede EN 1748-1-2:2004
English Version
Glass in building - Special basic products - Borosilicate
float glass - Part 1-2: Product standard
Verre dans la construction - Produits de base spéciaux Glas im Bauwesen - Spezielle Basiserzeugnisse -
- Glace de borosilicate - Partie 1-2 : Norme de produit Borosilikat-Floatglas - Teil 1-2: Produktnorm
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1748-1-2:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements . 7
4.1 Product description . 7
4.2 Determination of the characteristic’s performances . 7
4.2.1 Characteristics of basic borosilicate float glass . 7
4.2.2 Determination of characteristics of basic borosilicate float glass products . 8
4.3 Characteristics other than listed in 4.2 . 11
4.4 Dangerous substances . 11
5 Assessment and verification of constancy of performance – AVCP. 11
5.1 General . 11
5.2 Determination of the product type (see 5.1, 1)) . 12
5.2.1 General . 12
5.2.2 Type testing of characteristic's performances . 12
5.2.3 Test reports . 12
5.2.4 Multiple lines/sites . 13
5.3 Factory Production Control (FPC) . 13
5.3.1 General . 13
5.3.2 Inspection of samples in accordance with a prescribed test plan (see 5.1, 2a)) . 13
5.4 Initial inspection of factory and of factory production control (see 5.1, 2b)) . 14
5.5 Continuous surveillance and assessment of the factory production control (see 5.1,
2c)) . 15
5.6 Procedure for modifications . 15
5.7 Pre-production products (e.g. prototypes) . 16
6 Marking and labelling . 16
6.1 General . 16
6.2 Product marking. 16
Annex A (normative) Factory Production Control . 17
A.1 Factory Production Control requirements . 17
A.1.1 General . 17
A.1.2 Organization . 17
A.1.2.1 Responsibility and authority . 17
A.1.2.2 Management representative for factory production control . 17
A.1.2.3 Management review . 17
A.1.3 Control system . 17
A.1.3.1 General . 17
A.1.3.2 Personnel . 17
A.1.3.3 Documentation . 17
A.1.4 Equipment . 18
A.1.4.1 Testing . 18
A.1.4.2 Manufacturing . 18
A.1.5 Inspection and testing . 18
A.1.6 Non-complying materials / products . 18
A.2 Inspection and testing tables of basic borosilicate float glass production . 19
A.2.1 Information on Tables A.1 and A.2 . 19
A.2.2 Use of proxy testing . 19
Annex B (normative) Type testing of spectrophotometric and energy characteristics . 23
B.1 Sampling . 23
B.2 Measurement of spectrophotometric characteristics . 23
B.3 Tolerances on spectrophotometric characteristics . 23
Annex C (informative) Provisions for voluntary involvement of third party(ies) . 25
C.1 General . 25
C.2 Voluntary tasks for third parties . 25
C.3 Marking and labelling . 25
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No.305/2011 . 26
ZA.1 Scope and relevant characteristics . 26
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 27
ZA.3 Assignment of AVCP tasks . 28
Bibliography . 31
European foreword
This document (prEN 1748-1-2:2017) 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 1748-1-2:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports basic work requirements of EU Regulation and essential
requirements of EU Directive(s).
For relationship with EU Regulation/Directive(s), see informative Annex ZA which is an integral part of
this document.
The main changes compared to the previous edition are the following:
a) the standard has been revised to fulfil the requirements of the Regulation (EU) No 305/2011
(Construction Product Regulation), modified by Regulations (EU) No 157/2014, (EU) No 568/2014
and (EU) No 574/2014;
b) the solar factor, g, is listed within the spectrophotometric characteristics to be declared in the
Declaration of Performances (DoP);
c) the durability/conformity assessment is listed within the characteristics to be declared in the DoP;
d) the mechanical resistance shall be given in the DoP by the characteristic bending strength of the
glass.
This part of the European Standard does not stand alone; it is a part of one document:
— EN 1748-1-1, Glass in building — Special basic products — Borosilicate float glass — Part 1-1:
Definitions and general physical and mechanical properties;
— EN 1748-1-2, Glass in building — Special basic products — Borosilicate float glass — Part 1-2:
Product standard.
This document contains other aspects of importance for trade.
1 Scope
This European standard covers the evaluation of conformity and the factory production control of basic
borosilicate float glass for use in buildings.
For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other
directives, e.g. Low Voltage Directive, may apply.
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 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
prEN 1748-1-1:2017, Glass in Building — Special basic products — Borosilicate float glass — Part 1-1:
Definitions and general physical and mechanical properties
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 13501-1, Fire classification of construction products and building elements — Part 1: Classification
using data from reaction to fire tests
EN 13501-2, Fire classification of construction products and building elements — Part 2: Classification
using data from fire resistance tests, excluding ventilation services
EN 13501-5, Fire classification of construction products and building elements — Part 5: Classification
using data from external fire exposure to roofs tests
EN 13541, Glass in building — Security glazing — Testing and classification of resistance against
explosion pressure
EN 15998, Glass in building — Safety in case of fire, fire resistance — Glass testing methodology for the
purpose of classification
prEN 16612 Glass in building — Determination of the load resistance of glass panes by calculation and
testing
ISO 9385, Glass and glass-ceramics — Knoop hardness test
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 1748-1-1:2017 and the
following apply.
3.1
factory production control
FPC
documented, permanent and internal control of production in a factory, in accordance with this
standard
Note 1 to entry: See also Annex A.
3.2
product-type
set of representative performance levels or classes of a construction product, in relation to its essential
characteristics, produced using a given combination of raw materials or other elements in a specific
production process
3.3
essential characteristic
characteristic of the construction product which relate to the basic requirements for construction
works
Note 1 to entry: Basic requirements for construction work are given in the regulation (EU) No 305/2011,
Annex I.
3.4
performance of a construction product
performance related to the relevant essential characteristics, expressed by level or class, or in a
description
3.5
level
result of the assessment of the performance of a construction product in relation to its essential
characteristics, expressed as a numerical value
3.6
class
range of levels, delimited by a minimum and a maximum value, of performance of a construction
product
3.7
type testing
TT
determination of the performance of a product (characteristic, durability), on the basis of either actual
tests or other procedures (such as conventional, standardised, tabulated or generally accepted values,
standardised or recognised calculation methods, test reports when made available, …), in accordance
with this European standard and that demonstrates compliance with this European standard
3.8
test report
document that covers the results of tests undertaken on a representative sample of the product from
production or on a prototype design of the product
3.9
product description
document that details the relevant parameters, e.g. process conditions, structure, etc., for defining a
product that complies with the standard and that includes specific reference(s) to characteristics that
are modified by the production process
3.10
product family
group of products determined by the manufacturer, which is made with similar components and
processes and which is tested for FPC using the same test method
3.11
significant change
variation in performance beyond the permitted tolerance for the characteristic
4 Requirements
4.1 Product description
For conformity purposes the basic borosilicate float glass products 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 basic borosilicate float glass
products manufacturer or his agent except in the case of regulatory requirements.
The product description shall contain at least the following:
— a reference to prEN 1748-1-1:2017 and prEN 1748-1-2:2017 and all other standards with which
the manufacturer claims compliance;
— the type of manufacturing process used, i.e. float glass;
— a description of the product family(ies);
— the spectrophotometric properties of the basic borosilicate float glass products.
The definition of product families shall be consistent with the product description.
4.2 Determination of the characteristic’s performances
4.2.1 Characteristics of basic borosilicate float glass
Basic borosilicate float glass products are made in accordance to prEN 1748-1-1:2017. For the
characteristics listed in Table 1, the values given in prEN 1748-1-1:2017, 5.1 and 5.2 shall be used.
Table 1 — Information on the characteristics of basic borosilicate float glass
Characteristic Symbol Unit
Density ρ kg/m
Hardness (Knoop hardness in accordance with ISO 9385) HK Dimensionless
0,1/20
Young's modulus E GPa
Poisson's ratio μ Dimensionless
Characteristic bending strength f MPa
g,k
Resistance against temperature changes and temperature  K
diff i l
Specific heat capacity c J/(kg·K)
−1
Coefficient of linear expansion α K
Thermal conductivity (for U-value) λ W/(m·K)
Mean refractive index to visible radiation n Dimensionless
4.2.2 Determination of characteristics of basic borosilicate float glass products
4.2.2.1 General
If the basic borosilicate float 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.
4.2.2.2 Safety in the case of fire - Resistance to fire
Fire resistance shall be determined and classified in accordance with EN 13501-2.
EN 15998 specifies the testing methodology to be used for glass products that are claiming fire
resistance.
4.2.2.3 Safety in the case of fire - Reaction to fire
Reaction to fire shall be determined and classified in accordance with EN 13501-1.
Basic borosilicate glass products are products/materials that do not require to be tested for reaction to
fire (e.g. Products/materials of Classes A1 according to Commission Decision 96/603/EC, as amended
2000/605/EC).
4.2.2.4 Safety in the case of fire - External fire performance (for roof coverings only)
Where the manufacturer wishes to declare external fire performance (e.g. when subject to regulatory
requirements), the product shall be tested in accordance with EN 13501-5.
4.2.2.5 Safety in use - Bullet resistance: shatter properties and resistance to attack
Bullet resistance shall be determined and classified in accordance with EN 1063.
4.2.2.6 Safety in use - Explosion resistance: impact behaviour and resistance to impact
Explosion resistance shall be determined and classified in accordance with EN 13541.
4.2.2.7 Safety in use - Burglar resistance: shatter properties and resistance to attack
Burglar resistance shall be determined and classified in accordance with EN 356.
4.2.2.8 Safety in use - Pendulum body impact resistance: shatter properties (safe breakability)
and resistance to impact
Pendulum body impact resistance shall be determined and classified in accordance with EN 12600.
4.2.2.9 Safety in use - Mechanical resistance: Resistance against sudden temperature changes
and temperature differentials
The resistance against sudden temperature changes and temperature differentials is a generally
accepted value that is given in prEN 1748-1-1:2017 and shall be ensured by compliance with this
standard.
4.2.2.10 Safety in use - Mechanical resistance: Resistance against wind, snow, permanent load
and/or imposed loads of the glass unit
The mechanical resistance of basic borosilicate float glass products is a characteristic value that shall be
ensured by compliance with this standard.
The value to be declared is the characteristic bending strength, as defined in prEN 1748-1-1:2017, 5.2.
As long as prEN 16612 is not applicable for the glass design with respect to the concerned construction
or building site, then the current method of determining mechanical resistance in the country of
destination shall be applied.
4.2.2.11 Protection against noise - Direct airborne sound reduction
The sound reduction indexes shall be determined in accordance with EN 12758.
The values to be declared shall be rounded down to the nearest whole number.
4.2.2.12 Energy conservation and heat retention - Thermal properties
The thermal transmittance value (U-value) shall be determined in accordance with the following
procedure:
a) the emissivity shall be taken equal to 0,837, as given in prEN 1748-1-1:2017;
b) the U-value shall be determined by calculation in accordance with EN 673, with the normal
emissivity as defined above and the nominal thickness of the glass panes.
4.2.2.13 Energy conservation and heat retention - Radiation properties: Light transmittance and
reflectance
The light transmittance and light reflectance shall be determined either:
a) in accordance with the following procedure:
1) The light transmittance and light reflectance of one sample of basic borosilicate float glass
product shall be determined in accordance with EN 410 and Annex B. The exact thickness of
the glass shall be measured.
2) The light transmittance and the light reflectance of any other thickness shall be calculated
according to EN 410.
3) The tool used to calculate the light transmittance and the light reflectance shall be validated.
b) or measured following EN 410 and Annex B.
The tolerances on the calculated light transmittance and light reflectance are given in Annex B.
4.2.2.14 Energy conservation and heat retention - Radiation properties: Solar energy
characteristics
The solar direct transmittance, the solar direct reflectance and the total solar energy transmittance
(solar factor or g-value) shall be determined either:
a) in accordance with the following procedure:
1) The solar direct transmittance and solar direct reflectance of one sample of basic borosilicate
float glass product shall be determined in accordance with EN 410 and Annex B. The exact
thickness of the glass shall be measured.
2) The solar direct transmittance, the solar direct reflectance and the total solar energy
transmittance (solar factor or g-value) of any other thickness shall be calculated according to
EN 410.
3) The tool used to calculate the solar direct transmittance, the solar direct reflectance and the
total solar energy transmittance (solar factor or g-value) shall be validated.
b) or measured following EN 410 and Annex B.
The tolerances on the calculated solar energy characteristics are given in Annex B.
4.2.2.15 Durability / conformity with the definition of basic borosilicate float glass products
Products shall conform to the definition, to the manufacturer product description and fulfil the
requirements of basic borosilicate float glass products as defined in prEN 1748-1-1:2017.
The type testing concerns the product aspects as listed in Table 2.
Table 2 — Product aspects to be checked if product belongs to the group basic borosilicate float
glass products
Number
Product aspect Requirement of
samples
Chemical composition prEN 1748–1-1:2017, Clause 4 1
Thickness prEN 1748–1-1:2017, 6.2 1
Light transmittance (distinction clear glass from tinted prEN 1748–1-1:2017, 5.3 1
glass)
When products conform to the definition of basic borosilicate float glass as in 4.1, the characteristics’
performances in 4.2 are ensured during an economically reasonable working life.
The durability /conformity of basic borosilicate float glass products, including their characteristics, is
ensured by the following:
— compliance with this standard;
— compliance with instructions from the glass product manufacturer or supplier.
The manufacturer shall supply specific installation instructions or make reference to appropriate
technical specifications.
NOTE The durability of glass products depends also on:
— building and construction movements due to various actions;
— building and construction vibrations due to various actions;
— deflection and racking of the glass support due to various actions;
— glass support design (e.g. drainage of infiltrated water in the rebate, prevention of direct contact
between glass support members and glass);
— accuracy of glass support and glass support member dimensions;
— quality of the assembling of glass support members up to a glass support;
— quality of installation of the glass support into or onto the buildings or constructions;
— glass support expansion due to adsorbed moisture from the air or other sources;
— the quality of installation of the glass product into or onto its support.
4.3 Characteristics other than listed in 4.2
Optical and visual characteristics as well as dimensional tolerances shall comply with
prEN 1748-1-1:2017.
4.4 Dangerous substances
National regulations on dangerous substances may require verification and declaration on release, and
sometimes content, when construction products covered by this standard are placed on those markets.
In the absence of European harmonized test methods, verification and declaration on release/content
should be done taking into account national provisions in the place of use.
NOTE An informative database covering European and national provisions on dangerous substances is
available at the Construction website on EUROPA accessed through: http://ec.europa.eu/growth/tools-
databases/cp-ds/ .
5 Assessment and verification of constancy of performance – AVCP
5.1 General
The compliance of basic borosilicate float glass products with the requirements of this standard and
with the performances declared by the manufacturer in the declaration of performances shall be
demonstrated by:
1. determination of the product type;
2. factory production control by the manufacturer, including product assessment;
This shall include the following:
a) inspection of samples taken at the factory in accordance with a prescribed test plan;
b) initial inspection of the factory and of factory production control;
c) continuous surveillance and assessment of the factory production control.
The manufacturer shall always retain the overall control and shall have the necessary means to take
responsibility for the conformity of the product with its declared performance(s).
NOTE The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
5.2 Determination of the product type (see 5.1, 1))
5.2.1 General
All performances related to characteristics included in this standard shall be determined when the
manufacturer intends to declare the respective performances. In addition, instead of performing any
actual testing, type testing may make use of:
— generally accepted and/or conventional and/or standardized values, in the Clause 2 referenced
standards, or in publications that are referred to in these standards;
— standardized calculation methods and recognized calculation methods in the Clause 2 referenced
standards, or in publications that are referred to in these standards;
— assessment previously performed in accordance with the provisions of this standard (i.e. historic
data), may be taken into account provided that they were made to the same or a more rigorous test
method, under the same AVCP system (see note 1) on the same product or products of similar
design, construction and functionality, such that the results are applicable to the product in
question
— assessments previously performed with the previous version of EN 1748-1-2 remain valid;
— durability / conformity may be assessed indirectly by controlling the production processes
according to this document.
NOTE 1 AVCP systems were called Attestation of Conformity (AoC) systems under the EU Construction
Products Directive (89/106/EEC).
Products CE marked in accordance with appropriate harmonized European specifications may be
presumed to have the performances stated with the CE marking.
NOTE 2 The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
When actual testing is required then the type testing (TT) shall be undertaken on a sample
representative of the product taken from direct production or a prototype, any plant and / or line.
For the purp
...