oSIST prEN 16272-2:2022
(Main)Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics - Airborne sound insulation in the laboratory under diffuse sound field conditions
Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics - Airborne sound insulation in the laboratory under diffuse sound field conditions
This document specifies the laboratory method for measuring the airborne sound insulation performance of railway noise barriers in reverberant conditions. It covers the assessment of the intrinsic performance of noise barriers and related devices acting on airborne sound propagation 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 barriers to be installed on railway in non-reverberant conditions.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on-board devices, are out of the scope of this European standard.
Bahnanwendungen - Infrastruktur - Lärmschutzwände und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 2: Produktspezifische Merkmale - Luftschalldämmung (Labormethode) bei diffusen Schallfeldern
Applications ferroviaires - Infrastructure - Dispositifs de réduction du bruit - Méthode d'essai pour la détermination des performances acoustiques - Partie 2: Caractéristiques intrinsèques - Isolation au bruit aérien en salle réverbérante dans des condit
Železniške naprave - Infrastruktura - Protihrupne ovire in pripadajoče naprave, ki vplivajo na širjenje zvoka v zraku - Preskusna metoda za ugotavljanje akustičnih lastnosti - 2. del: Posebne karakteristike - Izolacija zvoka v zraku pri razpršenem zvočnem polju (laboratorijska metoda)
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN 16272-2:2022
01-april-2022
Železniške naprave - Infrastruktura - Protihrupne ovire in pripadajoče naprave, ki
vplivajo na širjenje zvoka v zraku - Preskusna metoda za ugotavljanje akustičnihlastnosti - 2. del: Posebne karakteristike - Izolacija zvoka v zraku pri razpršenem
zvočnem polju (laboratorijska metoda)Railway applications - Infrastructure - Noise barriers and related devices acting on
airborne sound propagation - Test method for determining the acoustic performance -
Part 2: Intrinsic characteristics - Airborne sound insulation in the laboratory under diffuse
sound field conditionsBahnanwendungen - Infrastruktur - Lärmschutzwände und verwandte Vorrichtungen zur
Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung derakustischen Eigenschaften - Teil 2: Produktspezifische Merkmale - Luftschalldämmung
(Labormethode) bei diffusen SchallfeldernApplications ferroviaires - Infrastructure - Dispositifs de réduction du bruit - Méthode
d'essai pour la détermination des performances acoustiques - Partie 2: Caractéristiques
intrinsèques - Isolation au bruit aérien en salle réverbérante dans des conditTa slovenski standard je istoveten z: prEN 16272-2
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
93.100 Gradnja železnic Construction of railways
oSIST prEN 16272-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16272-2:2022
DRAFT
EUROPEAN STANDARD
prEN 16272-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2022
ICS 93.100 Will supersede EN 16272-2:2012
English Version
Railway applications - Infrastructure - Noise barriers and
related devices acting on airborne sound propagation -
Test method for determining the acoustic performance -
Part 2: Intrinsic characteristics - Airborne sound insulation
in the laboratory under diffuse sound field conditions
Applications ferroviaires - Infrastructure - Dispositifs Bahnanwendungen - Infrastruktur - Lärmschutzwände
de réduction du bruit - Méthode d'essai pour la und verwandte Vorrichtungen zur Beeinflussung der
détermination des performances acoustiques - Partie Luftschallausbreitung - Prüfverfahren zur Bestimmung
2: Caractéristiques intrinsèques - Isolation au bruit der akustischen Eigenschaften - Teil 2:
aérien en salle réverbérante dans des condit Produktspezifische Merkmale - Luftschalldämmung
(Labormethode) bei diffusen SchallfeldernThis draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.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 16272-2:2022 E
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oSIST prEN 16272-2:2022
prEN 16272-2:2022 (E)
Contents Page
European foreword ....................................................................................................................................................... 3
Introduction .................................................................................................................................................................... 4
1 Scope .................................................................................................................................................................... 6
2 Normative references .................................................................................................................................... 6
3 Terms, definitions and symbols and abbreviated terms .................................................................. 7
4 Symbols and abbreviations ......................................................................................................................... 7
5 Test arrangement ............................................................................................................................................ 8
6 Test procedure and evaluation .................................................................................................................. 9
6.1 Test method ...................................................................................................................................................... 9
6.2 Expression of results ...................................................................................................................................... 9
7 Measurement uncertainty ........................................................................................................................ 10
8 Test report ...................................................................................................................................................... 10
Annex A (normative) Measurement uncertainty ........................................................................................... 11
A.1 General ............................................................................................................................................................. 11
A.2 Measurement uncertainty based upon reproducibility data ....................................................... 11
A.3 Standard deviation of repeatability and reproducibility of the sound reduction index .... 11
Annex B (normative) Test report template ..................................................................................................... 13
B.1 Overview ......................................................................................................................................................... 13
B.2 Test object (example) ................................................................................................................................. 14
B.3 Test situation (example) ........................................................................................................................... 16
B.3.1 Test rooms and test arrangement .......................................................................................................... 16
B.3.2 Test equipment and test procedures .................................................................................................... 17
B.3.3 Test conditions .............................................................................................................................................. 18
B.4 Test results (example) ............................................................................................................................... 18
B.5 Measurement uncertainty (example) ................................................................................................... 19
Bibliography ................................................................................................................................................................. 20
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prEN 16272-2:2022 (E)
European foreword
This document (prEN 16272-2:2022) has been prepared by Technical Committee CEN/TC 256 “Railway
application”, the secretariat of which is held by DIN.This document will supersede EN 16272-2:2012.
With respect to the superseded document, the following changes have been made:
— The title has been slightly changed.
— The declaration of measurement uncertainty and the related confidence level is now mandatory.
— An annex with the values of the standard deviation of reproducibility and repeatability has been
added; this makes possible the declaration of the measurement uncertainty and the related
confidence level, which is now mandatory (Annex A).— A detailed example has been added, including the declaration of the uncertainty (Annex B).
EN 16272-2 is part of a series and should be read in conjunction with the following:
EN 16272-1, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Part 1: Intrinsic characteristics — Sound absorption under diffuse
sound field conditionsEN 16272-2, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Part 2: Intrinsic characteristics — Airborne sound insulation under
diffuse sound field conditions (the present document)EN 16272-3-1, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Part 3-1: Normalised railway noise spectrum and single number
ratings for diffuse sound field applicationsEN 16272-3-2, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Part 3-2: Normalized railway noise spectrum and single number
ratings for direct sound field applicationsEN 16272-4, Railway applications – Track — Noise barriers and related devices acting on airborne
sound propagation — Part 4: Intrinsic characteristics — In situ values of sound diffraction under
direct sound field conditionsEN 16272-5, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Part 5: Intrinsic characteristics —Sound absorption under direct
sound field conditionsEN 16272-6, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Part 6: Intrinsic characteristics —Airborne sound insulation under
direct sound field conditionsCEN/TS 16272-7, Railway applications – Track — Noise barriers and related devices acting on
airborne sound propagation — Part 7: Extrinsic characteristics — In situ values of insertion loss
This document is in preparation.---------------------- Page: 5 ----------------------
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prEN 16272-2:2022 (E)
Introduction
Noise barriers installed along railways 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 barriers designed for railways 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 16272-6, 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 16272-6 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 that 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 rail side applications.
For the purpose of this document reverberant conditions are defined based on the geometric envelope,
e, across the railway formed by the barriers, trench sides or buildings (the geometric envelope does not
include the rail 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+h +h ).1 2
NOTE This method can be used to qualify noise barriers 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
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prEN 16272-2:2022 (E)
a) Partial cover on both sides of the railway; b) Partial cover on one side of the railway;
envelope, e = w+h +h envelope, e = w+h , h = 01 2 1 2
c) Deep trench; d) Tall barriers or buildings;
envelope, e = w+h +h envelope, e = w+h +h
1 2 1 2
e) Train passing close to a noise barrier f) Train passing close to a platform at the
stationenvelope, e = w+h +h envelope, e = w+h +h
1 2 1 2
Key
r railway surface
w width of open space
NOTE Figure 1 is not too scale
Figure 1 — Sketch of the reverberant condition check in six cases
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1 Scope
This document specifies the laboratory method for measuring the airborne sound insulation
performance of railway noise barriers in reverberant conditions. It covers the assessment of the
intrinsic performance of noise barriers and related devices acting on airborne sound propagation 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 barriers to be installed on railway in non-reverberant conditions.
All noise reducing devices different from noise barriers and related devices acting on airborne sound
propagation, e.g. devices for attenuation of ground borne vibration and on board devices, are out of the
scope of this document.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 16272-3-1, Railway applications – Track – Noise barriers and related devices acting on airborne sound
propagation – Test method for determining the acoustic performance – Part 3-1: Normalized railway
noise spectrum and single number ratings for diffuse sound field applicationsEN 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, Acoustics - Laboratory measurement of sound insulation of building elements – Part 2:
Measurement of airborne sound insulation (ISO 10140-2)EN ISO 10140-3, Acoustics - Laboratory measurement of sound insulation of building elements – Part 3:
Measurement of impact sound insulation (ISO 10140-3)EN ISO 10140-4, Acoustics - Laboratory measurement of sound insulation of building elements – Part 4:
Measurement procedures and requirements (ISO 10140-4)EN ISO 10140-5, Acoustics - Laboratory measurement of sound insulation of building elements – Part 5:
Requirements for test facilities and equipment (ISO 10140-5)EN ISO 12999-1:2014, Acoustics - Determination and application of measurement uncertainties in
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3 Terms, definitions and symbols and abbreviated terms
For the purposes of this document, the following terms and definitions 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
noise barrier
noise reducing device, which obstructs the direct transmission of airborne sound emanating from
railways and which will typically span between posts and also may overhang the railway
Note 1 to entry: Noise barriers are generally made of acoustic and structural elements (see 3.3 and 3.4).
Note 2 to entry: In some noise barriers, the acoustic function and the structural function cannot be clearly
separated and attributed to different components.3.2
cladding
noise reducing device, which is attached to a wall or other structure and reduces the amount of sound
reflectedNote 1 to entry: Claddings are generally made of acoustic and structural elements (see 3.3 and 3.4).
3.3acoustic element
element whose primary function is to provide the acoustic performance of the device
3.4structural element
element whose primary function is to support or hold in place acoustic elements
3.5
added device
added component that influences the acoustic performance of the original noise-reducing device (acting
primarily on the diffracted energy)4 Symbols and abbreviations
For the purposes of this document, the following symbols apply.
Table 1 — Symbols and abbreviated terms
Symbol or abbreviation Designation Unit
DLR Single-number rating of airborne sound insulation performance dB
exp
...
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