SIST EN 1793-2:2018

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 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 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

Le présent documentspécifie 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
• 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: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 16-Jul-2018
• Due Date: 20-Sep-2018
• Completion Date: 24-Aug-2018
• Ref Project: EN 1793-2:2018 - 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

Relations

• Replaces: SIST EN 1793-2:2013 - RRoad traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions
• Effective Date: 01-Sep-2018
• Replaced By: kSIST FprEN 1793-2:2025 - 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
• Effective Date: 04-Nov-2020

Overview

EN 1793-2:2018 - published by CEN - specifies a laboratory acoustic test method to determine the intrinsic airborne sound insulation of road traffic noise reducing devices under diffuse (reverberant) sound field conditions. It is intended for products that can be assembled inside test facilities compliant with EN ISO 10140-2 / EN ISO 10140-4 (e.g., barriers, cladding, covers used in tunnels, deep trenches or partially covered roads). This standard measures product performance in reverberant conditions and is not for assessing insertion loss or devices installed in non-reverberant roadside situations.

Key topics and technical requirements

• Test environment: Laboratory reverberant/diffuse sound field as described in EN ISO 10140 series. Reverberant conditions are defined by the geometric envelope (examples: tunnels, deep trenches, partial covers).
• Measurement range: One‑third octave band sound reduction indices Ri from 100 Hz to 5 kHz.
• Specimen mounting:
  • Sample windowed area ≥ 9.5 m² (excluding levelling plinth).
  • Edge supports must not overlap the sample by more than 70 mm and must be sealed to prevent leakage.
  • Where posts are used, at least one post must be included and panels attached on both sides; panels on the traffic-facing side must be at least 2 m long.
• Single-number rating (DLR): A single-number airborne sound insulation rating DLR is derived by weighting the Ri values with the normalized traffic noise spectrum from EN 1793-3. DLR is reported as an A‑weighted level difference and rounded to the nearest integer. Informative categories have been removed - only numeric DLR values are reported.
• Measurement uncertainty: Declaration of measurement uncertainty (coverage probability 95%) is mandatory following ISO/IEC Guide 98-3 (GUM). Annex C provides guidance.
• Test report: Must include reference to EN 1793-2, lab ID, test date, full specimen description (drawings/photos, masses, seals), test conditions, Ri frequency data (table and graph), DLR, uncertainty and signature.

Applications

• Laboratory qualification of noise barriers, cladding panels, road covers and other road traffic noise reducing devices intended for reverberant installations (tunnels, trenches, covered roads).
• Product comparison and selection by manufacturers, acoustic consultants, road authorities and procurement teams when intrinsic airborne insulation performance under diffuse-field conditions is required.
• Input for design decisions where airborne transmission through a device (rather than diffraction over it) is a critical factor.

Who should use this standard

• Acoustic test laboratories (EN ISO 10140 facilities)
• Noise barrier and road-cover manufacturers
• Road and tunnel design engineers, consultants and specifiers
• Certification bodies and product assessment organizations

Related standards

• EN 1793-1, EN 1793-3, EN 1793-4, EN 1793-5, EN 1793-6
• EN ISO 10140-1 / EN ISO 10140-2 / EN ISO 10140-4
• ISO/IEC Guide 98-3 (GUM)

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

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

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
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

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
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