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prEN 17839

(Main)

Glass in building - Glazing and airborne sound insulation - Validation procedure for calculation tools

Glass in building - Glazing and airborne sound insulation - Validation procedure for calculation tools

This document provides a procedure to validate a calculation tool based on simulation, analytical calculation and/or interpolation of airborne sound insulation characteristics of glass products.

Glas in Bauwesen - Glas und Luftschalldämmung - Validierungsverfahren für Berechnungsprogramme

Dieses Dokument liefert ein Verfahren zur Validierung eines Berechnungstools auf Grundlage von Simulation, analytischer Berechnung und/oder Interpolation von Merkmalen der Luftschalldämmung von Glas¬erzeugnissen.

Verre dans la construction - Vitrages et isolation acoustique - Procédure de validation des outils de calcul

Le présent document fournit une procédure permettant de valider un outil de calcul basé sur une simulation, un calcul analytique et/ou une interpolation des caractéristiques d’isolation aux bruits aériens des produits verriers.

Steklo v gradbeništvu - Zasteklitev in zvočna izolacija - Postopek potrjevanja računskih orodij

General Information

Status
Not Published
Publication Date
15-Aug-2024
ICS
81.040.20 - Glass in building
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
CEN/TC 129 - Glass in building
Drafting Committee
CEN/TC 129/WG 10 - Sound insulating glazed assemblies
Current Stage
4060 - Closure of enquiry - Enquiry
Start Date
14-Jul-2022
Due Date
23-Dec-2022
Completion Date
14-Jul-2022
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 17839:2022 - Glass in building - Glazing and airborne sound insulation - Validation procedure for calculation tools

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SLOVENSKI STANDARD
oSIST prEN 17839:2022
01-junij-2022
Steklo v gradbeništvu - Zasteklitev in zvočna izolacija - Postopek potrjevanja
računskih orodij

Glass in building - Glazing and airborne sound insulation - Validation procedure for

calculation tools
Glas in Bauwesen - Glas und Luftschalldämmung - Validierungsverfahren für
Berechnungsprogramme

Verre dans la construction - Vitrages et isolation acoustique - Procédure de validation

des outils de calcul
Ta slovenski standard je istoveten z: prEN 17839
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
91.120.20 Akustika v stavbah. Zvočna Acoustics in building. Sound
izolacija insulation
oSIST prEN 17839:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17839:2022
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oSIST prEN 17839:2022
DRAFT
EUROPEAN STANDARD
prEN 17839
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2022
ICS 81.040.20; 91.120.20
English Version
Glass in building - Glazing and airborne sound insulation -
Validation procedure for calculation tools

Verre dans la construction - Vitrages et isolation Glas in Bauwesen - Glas und Luftschalldämmung -

acoustique - Procédure de validation des outils de Validierungsverfahren für Berechnungsprogramme

calcul

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, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17839:2022 E

worldwide for CEN national Members.
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oSIST prEN 17839:2022
prEN 17839:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Software validation procedure .................................................................................................................. 6

4.1 General outline................................................................................................................................................. 6

4.2 Coverage of the validation ........................................................................................................................... 6

4.3 Requirements for the calculation tool ..................................................................................................... 7

4.4 Step 1: validation using the reference values of Table A.1............................................................... 7

4.5 Step 2: validation using values of random glass configurations .................................................... 8

4.6 Step 3: validation of the limits of the calculation tool declared by applicant ........................... 9

5 Revalidation ................................................................................................................................................... 10

6 Report content .............................................................................................................................................. 10

Annex A (normative) Reference data to be used for the validation process ....................................... 11

Annex B (informative) Example of calculation results report .................................................................. 14

Annex C (informative) Example of validation in Step 1 ............................................................................... 15

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oSIST prEN 17839:2022
prEN 17839:2022 (E)
European foreword

This document (prEN 17839:2022) 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.
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oSIST prEN 17839:2022
prEN 17839:2022 (E)
Introduction

The standard EN ISO 10140 specifies test requirements for building elements and products, including

glazing units. EN 12758:2019 outlines a test procedure for the measurement in laboratory of sound

insulation for a range of glass configurations.

Considering the number of possible glazing configurations, it is impractical to measure the acoustic

characteristics for all of them.

The last few years have seen the development of acoustic calculation tools based on simulation and/or

interpolation. The aim of this document is to provide a methodology and reference values for the

assessment of such calculation tools.

As there is neither a reference calculation tool nor a standardized calculation method, the assessment is

undertaken first by a comparison with reference values selected from EN 12758:2019. These values have

been calculated on the basis of data collected from several European laboratories. The assessment is

completed by a comparison of the calculated values for other glass compositions with measurements

already performed by the validator according to EN ISO 10140-1 or another possible validator.

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oSIST prEN 17839:2022
prEN 17839:2022 (E)
1 Scope

This document provides a procedure to validate a calculation tool based on simulation, analytical

calculation and/or interpolation of airborne sound insulation characteristics of glass products.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 12758:2019, Glass in building - Glazing and airborne sound insulation - Product descriptions,

determination of properties and extension rules

EN ISO 10140-1, Acoustics - Laboratory measurement of sound insulation of building elements - Part 1:

Application rules for specific products (ISO 10140-1)

EN ISO 10140-2:2021, Acoustics - Laboratory measurement of sound insulation of building elements - Part

2: Measurement of airborne sound insulation (ISO 10140-2:2021)

EN ISO 717-1, Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne

sound insulation (ISO 717-1)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 12758:2019 and the following

apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
calculation tool

software that provides Sound Reduction Index (SRI) of glazing configurations, aiming at giving results as

close as possible to those that would have been obtained by measurement according to EN ISO 10140

3.2
applicant

party that provides the calculation tool for validation, owns the rights of the calculation tool, and was

involved in its development process
3.3
validator
party that validates the calculation tool in accordance with this standard

Note 1 to entry: Within the framework of the EU Regulation 305/2011, the validator is a notified body.

3.4
user
person who uses the calculation tool
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oSIST prEN 17839:2022
prEN 17839:2022 (E)
4 Software validation procedure
4.1 General outline
The applicant shall provide the validator with access to the calculation tool.

The validation procedure is undertaken in three consecutive steps, for each category as defined in 4.2:

— Step 1: Results obtained with the calculation tool to be validated shall be compared by the validator

to a range of maximal values for defined reference glazing products as defined in Annex A (see 4.4).

— Step 2: If the result of this first evaluation is positive, a second evaluation is undertaken by comparing

calculated values for configurations selected by the validator with values obtained by measurement

(see 4.5).

— Step 3: When the result of the second evaluation is positive, the given limits of the calculation tool for

thicknesses of monolithic glass, laminated glass, interlayer and cavity widths are validated by

comparison to measurement results (see 4.6).
All comparisons shall be undertaken with an accuracy of 0,1 dB.
4.2 Coverage of the validation

The evaluation of a calculation tool is done for one or several categories hereunder:

— Category A: single monolithic glass;
— Category B: single laminated glass;
— Category C: double glazing units with monolithic glass components only;

— Category D: double glazing units with one monolithic and one laminated glass components;

— Category E: triple glazing units with only monolithic glass components;

— Category F: triple glazing units with two monolithic and one laminated glass components;

— Category G: triple glazing units with one monolithic (mid-pane) and two laminated glass components.

NOTE 1 Laminated glass refers only to standard PVB interlayer (non-acoustics).

The validator shall perform an evaluation for each category for which the calculation tool is able to

perform a calculation. The validator shall state for each evaluated category if the calculation tool passed

or not.

The applicant defines the limits of glass thicknesses, cavity widths and interlayer thicknesses by

restricting user inputs, e.g. only glass thicknesses from 3 mm to 15 mm can be chosen by the user.

The applicant informs the validator about categories which shall not be validated.

The applicant shall clearly indicate for which categories of products the calculation tool has been

validated, e.g. by a disclaimer accompanying the validation tool.

At the date of publication of this document, due to insufficient data concerning laminated glass with

interlayers other than standard (non-acoustic) PVB interlayers, only this type is considered for the

validation method.

NOTE 2 The validation does not cover frequencies below 100 Hz and above 3 150 Hz.

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oSIST prEN 17839:2022
prEN 17839:2022 (E)
4.3 Requirements for the calculation tool

The calculation tool shall calculate sound reduction index in third octave bands in the range from 100 Hz

to 3 150 Hz. Furthermore, the calculation tool shall calculate single-number quantities R , R +C and

w w
R +C according to EN ISO 717-1.
w tr

The version of the calculation tool shall be clearly and unambiguously identified. As an example, the

calculation tool may use a unique hash code based on the complete software code source.

The presentation and the report of the calculation results shall contain:

— sound reduction index, in dB, in third octave band in the range from 100 Hz to 3150 Hz and R , R +C

w w
and R +C according to EN ISO 717-1;
w tr

— the composition of the calculated glazing, its corresponding category from 4.2, with a reference to

this document;
— a clear note that the results are not derived from measurement;
— name and version number of the calculation tool;
— time and date of calculation.
All results shall be given with an accuracy of 0,1 dB.
An example for a calculation results report is given in Annex B.
4.4 Step 1: validation using the reference values of Table A.1
4.4.1 Reference data

The reference values are given in Table A.1 of Annex A for each reference glazing configuration. All

configurations of Table A.1 listed in the categories for which the applicant requests a validation shall be

calculated by the validator.
4.4.2 Comparison procedure

The validator shall perform the calculations on glazings as defined in 4.2, using the applicant's calculation

tool.

The validator compares the results obtained with the applicant tool with the data in third octave bands

and single-number quantity ratings given in Table A.1 and assesses if the criteria defined in 4.4.3 are met.

4.4.3 Validation criteria
The following criteria shall be met for each glazing category defined in 4.2.
a) For the results in third octave band frequencies:

1) For both, reference values of Annex A and calculated values, the sound transmission loss (R )

oct

for each octave band from 125 Hz to 2 000 Hz is calculated from the third octave band values

from 100 Hz to 2 500 Hz according to the Formula 7 of EN ISO 10140-2:2021:
−R /10
3 1/3oct ,n
R =−⋅10 log
oct ∑
n=1

2) The deviation, for each octave band, between the reference values of Annex A and the calculated

values are calculated;
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oSIST prEN 17839:2022
prEN 17839:2022 (E)
3) Zero is applied for all negative deviations;
EXAMPLE
Octave bands 250 Hz 2 kHz
Third octave bands 200 Hz 250 Hz 315 Hz 1 kHz 2 kHz 2,5 kHz
Third octave band values
calculated from reference
40,4 41,9 39,1 20,5 20,3 21,0
data given in Table A.1
Third octave band values
43,4 41,1 38,8 18,6 14,5 21,3
calculated by the validator
a) 1)
Octave band values
calculated from reference 35,5 15,8
data given in Table A.1
Octave band values
35,9 12,5
calculated by the validator
Calculation of the deviation,
between the reference
a) 2) 0,4 -3,4
values and the calculated
values in octave band
Zero is applied for all
a) 3) 0,4 0
...

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