SIST EN 1793-1:2013

Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption

This European Standard specifies the laboratory method for measuring the sound absorption of flat noise barriers or flat cladding for retaining walls or tunnels. It covers the assessment of the intrinsic sound absorption performance of roadside noise reducing devices that can reasonably be assembled inside the testing facility described in EN ISO 354. The test method in EN ISO 354 referred to in this European Standard is strictly valid only for plane absorbers; in particular, it excludes devices that act as weakly damped resonators. Some devices will depart significantly from these requirements and in these cases care is needed in interpreting the results.

Lärmschutzeinrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 1: Produktspezifische Merkmale der Schallabsorption

Diese Europäische Norm legt das Laborprüfverfahren zur Ermittlung der Schallabsorption von ebenen Lärmschutzwänden oder von ebenen Bekleidungen für Stützmauern oder Tunnel fest. Sie ist bei der Bewertung der produktspezifischen Schallabsorptionseigenschaften derjenigen Lärmschutzeinrichtungen an Straßen anzuwenden, die für den Einbau in die in EN ISO 354 beschriebene Prüfeinrichtung geeignet sind.
Das in EN ISO 354 festgelegte Prüfverfahren, worauf in dieser Norm Bezug genommen wird, gilt grundsätzlich nur für ebene Absorptionsverkleidungen. Insbesondere schließt es Lärmschutzeinrichtungen aus, die als schwach gedämpfte Resonatoren wirken. Einige Einrichtungen weichen beträchtlich von diesen Anforderungen ab. In solchen Fällen ist diese Gegebenheit bei der Interpretation der Ergebnisse sorgfältig zu beachten.
ANMERKUNG 1   Das in EN ISO 354 beschriebene Prüfverfahren beruht auf Messungen im Hallraum mit vorwiegend diffusem Schallfeld. Da sich ein allgemein gültiges Prüfverfahren zur Bestimmung der Schallabsorptionseigenschaften von Lärmschutzeinrichtungen unter Freifeldbedingungen noch in der Entwicklung befindet, gelten die mit dieser Europäischen Norm erzielten Messergebnisse vorübergehend für Lärmschutzeinrichtungen sowohl in halliger Umgebung als auch unter Freifeldbedingungen.
Sobald das Verfahren für die Freifeldbedingungen zur Verfügung steht (Solltermin für die Fertigstellung der Norm: 2013), wird es für Produkte unter Freifeldbedingungen anstelle des in der vorliegenden Europäischen Norm beschriebenen Verfahrens gelten.
ANMERKUNG 2   In der vorherigen Fassung dieser Europäischen Norm vom September 1997 beruhte das Prüfverfahren auf EN 20354:1985. In der vorliegenden Fassung dieser Europäischen Norm beruht das Prüfverfahren hingegen auf EN ISO 354:2003. (...)

Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption acoustique

La présente Norme européenne spécifie la méthode de laboratoire permettant de mesurer l'absorption acoustique des écrans antibruit plats ou des parements plats pour les murs de soutènement ou les tunnels. Elle traite de l'évaluation de la performance d'absorption acoustique intrinsèque des dispositifs de réduction du bruit en bordure de voies qui peuvent raisonnablement être assemblés à l'intérieur de l'installation d'essai décrite dans l'EN ISO 354.
La méthode d'essai décrite dans l'EN ISO 354, citée en référence dans la présente norme, n'est strictement valide que pour les absorbeurs plans et exclut en particulier les dispositifs qui agissent comme des résonateurs faiblement amortis. Certains dispositifs s'écartent nettement de ces exigences et, dans ce cas, l'interprétation des résultats doit être faite avec prudence.
NOTE 1   La méthode d'essai décrite dans l'EN ISO 354 est fondée sur des mesurages réalisés dans une salle réverbérante où prévalent des conditions de champ acoustique diffus. Etant donné qu'une méthode uniformément applicable pour la détermination de la performance d'absorption acoustique des dispositifs de réduction du bruit dans des conditions de champ libre est en cours d'élaboration, les résultats de mesure obtenus conformément à la présente Norme européenne sont provisoirement jugés pertinents pour une application aux dispositifs de réduction du bruit aussi bien dans des conditions de champ réverbéré que de champ libre. Lorsque la méthode applicable à des conditions de champ libre sera disponible, elle remplacera alors la méthode décrite dans la présente Norme européenne pour les produits destinés à être installés dans des conditions de champ libre (aujourd'hui, l'objectif de délai est 2013).
NOTE 2   Dans la version précédente de la présente Norme européenne de septembre 1997, la méthode d'essai de base était dérivée de l'EN 20354:1985. (...)

Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih lastnosti - 1. del: Karakteristike, značilne za absorpcijo zvoka

Ta evropski standard določa laboratorijsko metodo za merjenje absorpcije zvoka ploskih protihrupnih ovir ali ploskih oblog za oporne zidove ali predore. Zajema vrednotenje bistvenih akustičnih lastnosti protihrupnih ovir za cestni promet, ki jih je mogoče razumno zbrati v laboratoriju, opisanem v standardu EN ISO 354. Preskusna metoda iz standarda EN ISO 354, ki je navedena v tem evropskem standardu, velja le za ravne absorberje, zlasti pa ne velja za ovire, ki delujejo kot rahlo dušeni resonatorji. Pri ovirah, ki so precej neskladne s temi zahtevami, je pri razlagi rezultatov potrebna visoka stopnja previdnosti.

General Information

• Status: Withdrawn
• Public Enquiry End Date: 14-Oct-2010
• Publication Date: 08-Jan-2013
• Withdrawal Date: 18-Apr-2017
• ICS: 17.140.30 - Noise emitted by means of transport
• ICS: 93.080.30 - Road equipment and installations
• Technical Committee: OCE - Road equipment
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 19-Apr-2017
• Due Date: 12-May-2017
• Completion Date: 19-Apr-2017
• Directive: TP130 - Uredba o ocenjevanju in urejanju hrupa v okolju
• Ref Project: EN 1793-1:2012 - Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption

Relations

• Replaced By: SIST EN 1793-1:2017 - Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption under diffuse sound field conditions
• Effective Date: 01-May-2017
• Replaces: SIST EN 1793-1:1999 - Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption
• Effective Date: 01-Feb-2013

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lärmschutzeinrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 1: Produktspezifische Merkmale der SchallabsorptionDispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption acoustiqueRoad traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption93.080.30Cestna oprema in pomožne napraveRoad equipment and installations17.140.30Emisija hrupa transportnih sredstevNoise emitted by means of transportICS:Ta slovenski standard je istoveten z:EN 1793-1:2012SIST EN 1793-1:2013en,fr,de01-februar-2013SIST EN 1793-1:2013SLOVENSKI
STANDARDSIST EN 1793-1:19991DGRPHãþD



SIST EN 1793-1:2013



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1793-1
November 2012 ICS 17.140.30; 93.080.30 Supersedes EN 1793-1:1997English Version
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption acoustique
Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 1: Produktspezifische Merkmale der Schallabsorption This European Standard was approved by CEN on 29 September 2012.
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 CEN-CENELEC Management Centre 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 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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 worldwide for CEN national Members. Ref. No. EN 1793-1:2012: ESIST EN 1793-1:2013



EN 1793-1:2012 (E) 2 Contents Page Foreword . 3Introduction . 41Scope . 52Normative references . 53Symbols . 54Test arrangement . 55Test procedure and evaluation . 66Test report . 7Annex A (normative)
Categorisation of single-number rating . 9Annex B (informative)
Guidance note on use of the number rating DLαααα . 10Annex C (informative)
Measurement uncertainty . 11 SIST EN 1793-1:2013



EN 1793-1:2012 (E) 3 Foreword This document (EN 1793-1:2012) has been prepared by Technical Committee CEN/TC 226 “Road equipment”, the secretariat of which is held by AFNOR. 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 May 2013, and conflicting national standards shall be withdrawn at the latest by March 2014. 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 1793-1:1997. In the previous version of this European Standard, the basic test method was derived from EN 20354:1985; in the current version of this European Standard, the basic test method is derived from EN ISO 354:2003. This change is concerned with how to consider the sound attenuation in the air (see explanations under the last paragraph of the Introduction). EN 1793-1 is part of a series and should be read in conjunction with the following:  EN 1793-2, Road traffic noise reducing devices — Test method for determining the acoustic performance — Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions;  EN 1793-3, Road traffic noise reducing devices — Test method for determining the acoustic performance — Part 3: Normalized traffic noise spectrum;  CEN/TS 1793-4, Road traffic noise reducing devices — Test method for determining the acoustic performance — Part 4: Intrinsic characteristics — In situ values of sound diffraction;  CEN/TS 1793-5, Road traffic noise reducing devices — Test method for determining the acoustic performance — Part 5: Intrinsic characteristics — In situ values of sound reflection and airborne sound insulation;  EN 1793-6, Road traffic noise reducing devices — Test method for determining the acoustic performance — Part 6: Intrinsic characteristics — In situ values of airborne sound insulation under direct sound field conditions. According to the CEN/CENELEC Internal Regulations, the national standards organisations 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 1793-1:2013



EN 1793-1:2012 (E) 4 Introduction Where a sound reflecting surface is installed along a road, it may be effective to use sound absorbing devices on its traffic side to reduce additional noise nuisance caused by reflected sound. This treatment may be needed in the presence of the following:  noise barriers, rocks or retaining walls that can reflect sound waves toward unprotected areas;  vertical cuttings or reflective surfaces that face each other;
 tunnels and their approaches;  traffic passing close to a barrier where reflections between the vehicles and the barrier may reduce effectiveness. This European Standard specifies a test method for qualifying the sound absorption performance of noise reducing devices designed for roads (a measure of intrinsic performance). It is not concerned with determining insertion loss (extrinsic performance) which depends on additional factors which are not related to the product itself, e.g. the dimensions of the barrier and quality of installation work and site factors such as ground impedance, site geometry etc. The test is designed to allow the intrinsic sound absorption performance of the device to be measured; the resulting rating should aid the selection of devices for particular roadside applications.
This method may be used to qualify noise reducing devices for other applications, e.g. found along railways or near industrial sites. In these cases, the single-number ratings should be calculated using an appropriate spectrum. In the previous version of this European Standard dated September 1997, the basic test method was derived from EN 20354:1985. In the current version of this European Standard, the basic test method is derived from EN ISO 354:2003. In the current version of the basic test method, an essential change was introduced compared to the previous version, viz. the application of a correction method for changes in sound attenuation in air caused by changes in air temperature and humidity during the test. Because this correction was not applied in the previous version of the test method, the results from the current version may deviate considerably from the results obtained with the previous version of the method. Specifically for test samples with a high absorption coefficient, these changes may amount to 1 dB or 2 dB for the single number rating DL., either in a positive or a negative sense. The effect of the application of the correction will be most noticeable in the higher frequency bands. To avoid possible confusion between the old and the new measurement results, the continued use
...

SLOVENSKI STANDARD
oSIST prEN 1793-1:2010
01-september-2010
3URWLKUXSQHRYLUH]DFHVWQLSURPHW3UHVNXVQDPHWRGD]DXJRWDYOMDQMHDNXVWLþQLK
ODVWQRVWLGHO.DUDNWHULVWLNH]QDþLOQH]DDEVRUSFLMR]YRND
Road traffic noise reducing devices - Test method for determining the acoustic
performance - Part 1: Intrinsic characteristics of sound absorption
Lärmschutzeinrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen
Eigenschaften - Teil 1: Produktspezifische Merkmale der Schallabsorption
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination
de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption
acoustique
Ta slovenski standard je istoveten z: prEN 1793-1
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
oSIST prEN 1793-1:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1793-1:2010

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oSIST prEN 1793-1:2010


EUROPEAN STANDARD
DRAFT
prEN 1793-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2010
ICS 17.140.30; 93.080.30 Will supersede EN 1793-1:1997
English Version
Road traffic noise reducing devices - Test method for
determining the acoustic performance - Part 1: Intrinsic
characteristics of sound absorption
Dispositifs de réduction du bruit du trafic routier - Méthode Lärmschutzeinrichtungen an Straßen - Prüfverfahren zur
d'essai pour la détermination de la performance acoustique Bestimmung der akustischen Eigenschaften - Teil 1:
- Partie 1: Caractéristiques intrinsèques de l'absorption Produktspezifische Merkmale der Schallabsorption
acoustique
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 226.

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 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 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
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1793-1:2010: E
worldwide for CEN national Members.

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oSIST prEN 1793-1:2010
prEN 1793-1:2010 (E)
Contents

Page

Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Symbols . 5
4 Test arrangement . 6
5 Test procedure and evaluation . 7
6 Test report . 8
Annex A (normative) Categorization of single-number rating . 9
(informative) Guidance note on use of the number rating DL . 10
Annex B αααα

2

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oSIST prEN 1793-1:2010
prEN 1793-1:2010 (E)
Foreword
This document (prEN 1793-1:2010) has been prepared by Technical Committee CEN/TC 226 “Road
equipment”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1793-1:1997.
It should be read in conjunction with:

prEN 1793-2 Rev, Road traffic noise reducing devices - Test method for determining the acoustic
performance - Part 2 : Intrinsic characteristics of airborne sound insulation for diffuse sound fields

EN 1793-3:1998, Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 3: Normalized traffic noise spectrum

CEN/TS 1793-4, Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 4: Intrinsic characteristics – In situ values of sound diffraction

CEN/TS 1793-5, Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 5: Intrinsic characteristics – In situ values of sound reflection under direct sound field
conditions

prEN 1793-6, Road traffic noise reducing devices - Test method for determining the acoustic
performance – Part 6: Intrinsic characteristics – In situ values of airborne sound insulation under direct
sound field conditions


3

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oSIST prEN 1793-1:2010
prEN 1793-1:2010 (E)
Introduction

Where a sound reflecting surface is installed along a road it may be effective to use sound absorbing devices
on its traffic side to reduce additional noise nuisance caused by reflected sound. This treatment may be
needed in the presence of the following:

- noise barriers, rocks or retaining walls that can reflect sound waves toward unprotected areas,

- vertical cuttings or reflective surfaces that face each other,

- tunnels and their approaches,

- traffic passing close to a barrier where reflections between the vehicles and the barrier may reduce
effectiveness.

This European Standard specifies a test method for qualifying the sound absorption performance of noise
reducing devices designed for roads (a measure of intrinsic performance). It is not concerned with
determining in-situ performance (extrinsic performance) which additionally depends on factors which are not
related to the product itself, e.g. the dimensions of the barrier and quality of installation work and site factors
such as ground impedance, site geometry etc. The test is designed to allow the intrinsic sound absorption
performance of the device to be measured and the resulting rating should aid the selection of devices for
particular roadside applications.

NOTE This method may be used to qualify noise reducing devices for other applications, e.g. found along
railways or near industrial sites. In these cases the single-number ratings should be calculated using an
appropriate spectrum.
4

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oSIST prEN 1793-1:2010
prEN 1793-1:2010 (E)

1 Scope
This European Standard specifies the laboratory method for measuring the sound absorption of flat noise
barriers or flat cladding for retaining walls or tunnels. It covers the assessment of the intrinsic sound
absorption performance of roadside noise reducing devices which can reasonably be assembled inside the
testing facility described in EN ISO 354.

The test method in EN ISO 354, referred to in this standard, is strictly valid only for plane absorbers and in
particular excludes devices which act as weakly damped resonators. Some devices will depart sign
...