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

This European Standard specifies the laboratory method for measuring the airborne sound insulation performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic performance of barriers that can reasonably be assembled inside the testing facility described in EN ISO 10140-2 and EN ISO 10140-4.
This method is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed on roads in non-reverberant conditions.

Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 2: Produktspezifische Merkmale der Luftschalldämmung in diffusen Schallfeldern

Diese Europäische Norm legt das Laborprüfverfahren zur Ermittlung der Luftschalldämm-Eigenschaften von Lärmschutzwänden an Straßen unter halligen Bedingungen fest. Sie ist bei der Bewertung der produktspezifischen Eigenschaften derjenigen Lärmschutzvorrichtungen an Straßen anzuwenden, die für den Einbau in die in EN ISO 10140-2 und EN ISO 10140-4 beschriebene Prüfeinrichtung geeignet sind.
Dieses Verfahren gilt nicht zur Bestimmung der produktspezifischen Merkmale der Luftschalldämmung von Lärmschutzvorrichtungen an Straßen unter nicht halligen Bedingungen.

Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 2: Caractéristiques intrinsèques de l'isolation aux bruits aériens dans des conditions de champ acoustique diffus

La présente Norme européenne spécifie la méthode de laboratoire permettant de mesurer la performance d'isolation aux bruits aériens des dispositifs de réduction du bruit du trafic routier dans des conditions de réverbération. Elle traite de l'évaluation de la performance intrinsèque des écrans antibruit qui peuvent raisonnablement être assemblés à l'intérieur de l'installation d'essai décrite dans l'EN ISO 10140-2 et l'EN ISO 10140-4.
La présente méthode n'est pas destinée à la détermination des caractéristiques intrinsèques d'isolation aux bruits aériens des dispositifs de réduction du bruit devant être installés sur les routes dans des conditions non réverbérantes.

Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih lastnosti - 2. del: Karakteristike, značilne za izolacijo pred zvokom v zraku pri razpršenem zvočnem polju

Ta evropski standard določa laboratorijsko metodo za merjenje lastnosti za izolacijo pred zvokom v zraku pri protihrupnih ovirah za cestni promet v odmevnih pogojih. Zajema vrednotenje značilnih lastnosti ovir, ki jih je mogoče razumno zbrati v laboratoriju, opisanem v standardih EN ISO 10140-2 in EN ISO 10140-4.
Ta metoda ni namenjena ugotavljanju karakteristik, značilnih za izolacijo pred zvokom v zraku, pri protihrupnih ovirah za namestitev na cestah v neodmevnih pogojih.

General Information

Status
Published
Public Enquiry End Date
19-Jan-2017
Publication Date
23-Aug-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
16-Jul-2018
Due Date
20-Sep-2018
Completion Date
24-Aug-2018

RELATIONS

Buy Standard

Standard
SIST EN 1793-2:2018
English language
13 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 2: Produktspezifische Merkmale der Luftschalldämmung in diffusen SchallfeldernDispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 2: Caractéristiques intrinsèques de l'isolation aux bruits aériens dans des conditions de champ acoustique diffusRoad traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions93.080.30Cestna oprema in pomožne napraveRoad equipment and installations17.140.30Emisija hrupa transportnih sredstevNoise emitted by means of transportICS:Ta slovenski standard je istoveten z:EN 1793-2:2018SIST EN 1793-2:2018en,fr,de01-september-2018SIST EN 1793-2:2018SLOVENSKI

STANDARDSIST EN 1793-2:20131DGRPHãþD
SIST EN 1793-2:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1793-2
June
t r s z ICS
s yä s v rä u râ
{ uä r z rä u r Supersedes EN
s y { uæ tã t r s tEnglish Version

Road traffic noise reducing devices æ Test method for determining the acoustic performance æ Part

tã Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions Dispositifs de réduction du bruit du trafic routier æ Méthode d 5essai pour la détermination de la performance acoustique æ Partie

t ã Caractéristiques intrinsèques de l 5isolation aux bruits aériens dans des conditions de champ acoustique diffus

Lärmschutzvorrichtungen an Straßen æ Prüfverfahren zur Bestimmung der akustischen Eigenschaften æ Teil

tã Produktspezifische Merkmale der Luftschalldämmung in diffusen Schallfeldern This European Standard was approved by CEN on

s { February
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s y { uæ tã t r s z ESIST EN 1793-2:2018

EN 1793-2:2018 (E) 2 Contents Page European foreword ....................................................................................................................................................... 3 Introduction .................................................................................................................................................................... 4 1 Scope .................................................................................................................................................................... 6 2 Normative references .................................................................................................................................... 6 3 Terms and definitions ................................................................................................................................... 6 4 Symbols and abbreviations ......................................................................................................................... 7 5 Test arrangement ............................................................................................................................................ 7 6 Test procedure and evaluation .................................................................................................................. 8 6.1 Test method ...................................................................................................................................................... 8 6.2 Single-number rating of airborne sound insulation, DLR ................................................................. 8 6.3 Expression of results ...................................................................................................................................... 9 7 Measurement uncertainty ........................................................................................................................... 9 8 Test report ......................................................................................................................................................... 9 Annex A (informative)

Categorization of single-number rating ................................................................ 10 Annex B (informative)

Guidance note on the use of the single number rating DLR ............................. 11 Annex C (informative)

Measurement uncertainty .......................................................................................... 12 C.1 General ............................................................................................................................................................. 12 C.2 Measurement uncertainty based upon reproducibility data ....................................................... 12 Bibliography ................................................................................................................................................................. 13

SIST EN 1793-2:2018

EN 1793-2:2018 (E) 3 European foreword This document (EN 1793-2:2018) 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 December 2018, and conflicting national standards shall be withdrawn at the latest by December 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1793-2:2012. With respect to the superseded document, the following changes have been made: — The declaration of measurement uncertainty and the related confidence level is now mandatory. — The categories of single number rating have been removed from Annex A. The performance of the noise reducing device is, from now on, only to be reported in terms of the numeric values of the single number rating. EN 1793-2 is part of a series of documents and will be read in conjunction with the following: — EN 1793-1, Road traffic noise reducing devices - Test method for determining the acoustic performance – Part 1: Intrinsic characteristics of sound absorption 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; — EN 1793-4, Road traffic noise reducing devices - Test method for determining the acoustic performance – Part 4: Intrinsic characteristics - In situ values of sound diffraction; — EN 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; — 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 organizations 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1793-2:2018

EN 1793-2:2018 (E) 4 Introduction Noise reducing devices alongside roads should provide adequate sound insulation so that sound transmitted through the device is not significant compared with the sound diffracted over the top. This document specifies a test method for qualifying the intrinsic airborne sound insulation performance for noise reducing devices designed for roads in reverberant conditions, e.g. inside tunnels or deep trenches or under covers. The measurement results of this method for airborne sound insulation are comparable but not identical with the results of the test method EN 1793-6, mainly because the present method uses a diffuse sound field, while the other method assumes a directional sound field. Research studies suggest that good correlation exists between field data, measured according to EN 1793-6 and laboratory data, measured according to the method described in the present document [1], [2], [3], [4]. This document is not concerned with determining insertion loss (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 airborne sound insulation performance of the device to be measured; the resulting rating should aid the selection of devices for reverberant roadside applications. For the purpose of this document reverberant conditions are defined based on the geometric envelope, e, across the road formed by the barriers, trench sides or buildings (the geometric envelope does not include the road surface) as shown by the dashed lines in Figure 1. Conditions are defined as being reverberant when the percentage of open space in the geometric envelope is less than or equal to 25 %, i.e. reverberant conditions occur when w/e

0,25, where e = (w+h1+h2). NOTE This method can be used to qualify noise reducing devices for other applications, e.g. to be installed nearby industrial sites. In this case, the single-number ratings can preferably be calculated using an appropriate spectrum. SIST EN 1793-2:2018

EN 1793-2:2018 (E) 5

a) Partial cover on both sides of the road; b) Partial cover on one side of the road; geometric envelope, e = w+h1+h2 geometric envelope, e = w+h1

c) Deep trench; d) Tall barriers or buildings; geometric envelope, e = w+h1+h2 geometric envelope, e = w+h1+h2 Key r road surface w width of open space h1 developed length of element, e.g. cover, trench side, barrier or building h2 developed length of element, e.g. cover, trench side, barrier or building NOTE Figure 1 is not to scale. Figure 1 — Sketch of the reverberant condition check in four cases SIST EN 1793-2:2018

EN 1793-2:2018 (E) 6 1 Scope This document specifies the laboratory method for measuring the airborne sound insulation performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic perform

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.