Building products - Treatment of acoustics in product technical specifications

This document specifies the technical requirements relating to acoustics for a product standard, European Technical Approval Guidelines (ETAG) or European Technical Approval (ETA) for a specific building product or equipment, or a family of building products or equipment. In particular, it gives advice on how to write requirements in response to the mandated characteristics on acoustics under the Construction Products Directive.
NOTE 1   In the remainder of this document, the terms used relate to CEN and product standards. The concepts are, however, equally applicable to the European Organisation for Technical Approvals (EOTA).
The purpose of this document is to assist the product Technical Committees in preparing acoustic clauses to ensure that such product standards:
- are as homogeneous as possible, with each individual product standard having the same basic structure;
- are in full accordance with the standards for the measurement of acoustic properties;
- reflect the latest technical knowledge of methods of determining the acoustical properties from the specific family of building products or equipment under consideration.
NOTE 2   Clause 2 lists the European and International Standards to be used in the drafting of acoustic provisions standard. Annex A contains an outline of a typical acoustic product standard summarizing the information that is required. Annex B contains guidance on choosing appropriate properties. Annex C describes the relevant measured acoustic properties for common products.

Bauprodukte - Behandlung der Akustik in technischen Produktspezifikationen

Gradbeni proizvodi - Podajanje akustičnih lastnosti v tehničnih specifikacijah proizvodov

General Information

Status
Published
Publication Date
30-Jun-2006
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jul-2006
Due Date
01-Jul-2006
Completion Date
01-Jul-2006

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SLOVENSKI STANDARD
SIST-TP CEN/TR 15226:2006
01-julij-2006
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SURL]YRGRY
Building products - Treatment of acoustics in product technical specifications
Bauprodukte - Behandlung der Akustik in technischen Produktspezifikationen
Ta slovenski standard je istoveten z: CEN/TR 15226:2006
ICS:
01.110 7HKQLþQDGRNXPHQWDFLMD]D Technical product
L]GHONH documentation
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
SIST-TP CEN/TR 15226:2006 en

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

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SIST-TP CEN/TR 15226:2006
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SIST-TP CEN/TR 15226:2006
TECHNICAL REPORT
CEN/TR 15226
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
March 2006
ICS 03.120.10; 11.020
English Version
Building products - Treatment of acoustics in product technical
specifications
Bauprodukte - Behandlung der Akustik in technischen
Produktspezifikationen

This Technical Report was approved by CEN on 22 October 2005. It has been drawn up by the Technical Committee CEN/TC 126.

CEN members are the national standards bodies of Austria, Belgium, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 15226:2006: E

worldwide for CEN national Members.
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Contents Page

Foreword..............................................................................................................................................................3

1 Scope ......................................................................................................................................................4

2 Normative references ............................................................................................................................4

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

4 Requirements for the contents of a product standard ....................................................................14

5 Extension rules for the declaration of acoustic properties.............................................................20

Annex A (informative) Items to be covered in a product standard ............................................................24

Annex B (informative) Choosing appropriate properties ............................................................................25

Annex C (normative) Relevant measured acoustic properties for some common products ..................27

Annex D (informative) Examples of rules for direct and extended application of test results................33

Bibliography ......................................................................................................................................................34

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Foreword

This Technical Report (CEN/TR 15226:2006) has been prepared by Technical Committee CEN/TC 126

“Acoustic properties of building products and of buildings”, the secretariat of which is held by AFNOR.

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.

In addition to using this document, it is recommended that product Technical Committees contact

CEN/TC 126 for advice on acoustic issues relating to the treatment of acoustics in technical specifications.

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1 Scope

This document specifies the technical requirements relating to acoustics for a product standard, European

Technical Approval Guidelines (ETAG) or European Technical Approval (ETA) for a specific building product

or equipment, or a family of building products or equipment. In particular, it gives advice on how to write

requirements in response to the mandated characteristics on acoustics under the Construction Products

Directive.

NOTE 1 In the remainder of this document, the terms used relate to CEN and product standards. The concepts are,

however, equally applicable to the European Organisation for Technical Approvals (EOTA).

The purpose of this document is to assist the product Technical Committees in preparing acoustic clauses to

ensure that such product standards:

 are as homogeneous as possible, with each individual product standard having the same basic structure;

 are in full accordance with the standards for the measurement of acoustic properties;

 reflect the latest technical knowledge of methods of determining the acoustical properties from the

specific family of building products or equipment under consideration.

NOTE 2 Clause 2 lists the European and International Standards to be used in the drafting of acoustic provisions

standard. Annex A contains an outline of a typical acoustic product standard summarizing the information that is required.

Annex B contains guidance on choosing appropriate properties. Annex C describes the relevant measured acoustic

properties for common products.
2 Normative references

The following referenced documents are indispensable for the application 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.
2.1 Standards for the measurement of acoustic properties

EN 20140-9, Acoustics – Measurement of sound insulation in buildings and of building elements – Part 9:

Laboratory measurements of room-to-room airborne sound insulation of a suspended ceiling with a plenum

above it (ISO 140-9:1985)

EN 29052-1, Acoustics – Determination of dynamic stiffness – Part 1: Materials used under floating floors in

dwellings (ISO 9052-1:1989)

EN 29053, Acoustics – Materials for acoustical applications – Determination of airflow resistance

(ISO 9053:1991)

EN ISO 140-3, Acoustics – Measurement of sound insulation in buildings and of building elements – Part 3:

Laboratory measurements of airborne sound insulation of building elements (ISO 140-3:1995)

EN ISO 140-6, Acoustics – Measurement of sound insulation in buildings and of building elements – Part 6:

Laboratory measurements of impact sound insulation of floors (ISO 140-6:1998)

EN ISO 140-8, Acoustics – Measurement of sound insulation in buildings and of building elements – Part 8:

Laboratory measurements of the reduction of transmitted impact noise by floor coverings on a heavyweight

standard floor (ISO 140-8:1997)
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EN ISO 140-12, Acoustics – Measurement of sound insulation in buildings and of building elements – Part 12:

Laboratory measurements of room-to-room airborne and impact sound insulation of an access floor

(ISO 140-12:2000)

EN ISO 354, Acoustics – Measurement of sound absorption in a reverberation room (ISO 354:2003)

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

sound insulation (ISO 717-1:1996)

EN ISO 717-2, Acoustics – Rating the sound insulation in buildings and of building elements – Part 2: Impact

sound insulation (ISO 717-2:1996)

EN ISO 11654, Acoustics – Sound absorbers for use in buildings – Rating of sound absorption

(ISO 11654:1997)

EN ISO 15186-1, Acoustics – Measurement of sound insulation in buildings and of building elements using

sound intensity – Part 1: Laboratory measurements (ISO 15186-1:2000)

ISO 15186-3, Acoustics – Measurement of sound insulation in buildings and of building elements using sound

intensity – Part 3: Laboratory measurements at low frequencies

ISO/PAS 16940, Glass in building – Glazing and airborne sound insulation – Measurement of the mechanical

impedance of laminated glass
2.2 Standards for the estimation of acoustic properties

EN 12354-1, Building Acoustics – Estimation of acoustic performance of buildings from the performance of

elements – Part 1: Airborne sound insulation between rooms

EN 12354-2:2000, Building Acoustics – Estimation of acoustic performance of buildings from the performance

of elements – Part 2: Impact sound insulation between rooms

EN 12354-6:2003, Building acoustics – Estimation of acoustic performance of buildings from the performance

of elements – Part 6: Sound absorption in enclosed spaces
3 Terms and definitions

For the purposes of this document, the terms and definitions given in the standards listed in Clause 2 and the

following apply.
3.1
general
3.1.1
equivalent continuous sound pressure level, L (dB)
eq,T

value of the sound pressure level in decibels of a continuous, steady sound, that within a specified time

interval, T, has the same mean squared sound pressure as the sound under consideration that varies with

time
3.1.2
octave band

band of frequencies in which the upper limit of the band is twice the frequency of the lower limit

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3.1.3
one third octave band
1/3

band of frequencies in which the upper limit of the band is 2 times the frequency of the lower limit

3.2
airborne sound insulation
3.2.1
sound reduction index, R (dB)

ten times the common logarithm of the ratio of the sound power W which is incident on a partition under test

to the sound power W transmitted through the specimen, in a stated frequency band {laboratory

measurement}
3.2.2
sound reduction improvement index, ∆∆∆∆R (dB)

improvement in the sound reduction index due to a lining (e.g. wall lining, floating floor, ceiling etc) {laboratory

measurement}
3.2.3
apparent sound reduction index, R’ (dB)

ten times the common logarithm of the ratio of the sound power W which is incident on a partition under test

to the total sound power transmitted into the receiving room, if in addition to the sound power W transmitted

through the separating element, the sound power W transmitted through flanking elements or by other

components is significant, in a stated frequency band {field measurement}
3.2.4
intensity sound reduction index, R (dB)

laboratory measurement of the sound reduction index using sound intensity measurements in a stated

frequency band {laboratory measurement}
3.2.5
level difference, D (dB)

difference in the space and time average sound pressure levels produced in two rooms by one or more sound

source in one of them in a stated frequency band
3.2.6
normalized level difference, D (dB)

level difference corresponding to the reference absorption area in the receiving room in a stated frequency

band {field measurement}
3.2.7
element-normalized level difference, D (dB)
n,e

level difference corresponding to the reference absorption area in the receiving room in a stated frequency

band for a small building element {laboratory measurement}
3.2.8
standardized level difference, D (dB)

level difference in a stated frequency band, normalized to a reverberation time of 0,5 s {field measurement}

3.2.9
suspended-ceiling normalized level difference D (dB)
n,c

level difference corresponding to the reference absorption area in the receiving room in a stated frequency

band for sound transmission via a suspended ceiling {laboratory measurement}
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3.3
rating of airborne sound insulation
3.3.1
C (dB)

spectrum adaptation term to be added to the single-number quantity to take account of spectrum No.1 as

defined in EN ISO 717-1
3.3.2
C (dB)

spectrum adaptation term to be added to the single-number quantity to take account of spectrum No.2 as

defined in EN ISO 717-1
3.3.3
weighted sound reduction index, R (dB)

single-number quantity that characterizes the airborne sound insulation of a product or building element

{laboratory measurement}
3.3.4
weighted sound reduction improvement index, ∆∆∆∆R (dB)

single-number quantity that characterizes the improvement in the sound reduction index {laboratory

measurement}
3.3.5
weighted intensity sound reduction index, R (dB)
I,w

single-number quantity that characterizes the airborne sound insulation of a product or building element over a

range of frequencies using an intensity technique {laboratory measurement}
3.3.6
weighted apparent sound reduction index, R' (dB)

single-number quantity that characterizes the airborne sound insulation between rooms in a building {field

measurement}
3.3.7
weighted element-normalized level difference, D (dB)
n,e,w

single-number quantity that characterizes the airborne sound insulation of a small building element over a

range of frequencies {laboratory measurement}
3.3.8
weighted standardized level difference, D (dB)
nT,w

single-number quantity that characterizes the airborne sound insulation between rooms in a building {field

measurement}
3.3.9
weighted suspended-ceiling normalized level difference, D (dB)
n,c,w

single-number quantity that characterizes the airborne sound insulation for sound transmission via a

suspended ceiling over a range of frequencies {laboratory measurement}
3.4
impact sound insulation
3.4.1
impact sound pressure level, L (dB)

average sound pressure level in a specific frequency band in a room below a floor, when it is excited by a

standard tapping machine in a stated frequency band
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3.4.2
normalized impact sound pressure level L (dB)

impact sound pressure level normalized for a standard absorption area in the receiving room in a stated

frequency band {laboratory measurement}
3.4.3
reduction of impact sound pressure level, ∆∆∆∆L (dB)

difference between the average sound pressure levels in the receiving room in a stated frequency band before

and after the installation of, for example, a floor covering {laboratory measurement}

3.4.4
standardized impact sound pressure level, L’ (dB)

impact sound pressure level standardized to a reverberation time in the receiving room of 0,5 s in a stated

frequency band {field measurement}
3.4.5
normalized flanking impact sound pressure level L (dB)
n,f

impact sound pressure level corresponding to the reference absorption area in the receiving room in a stated

frequency band for transmission via a specified flanking path {laboratory measurement}

3.5
rating of impact sound insulation
3.5.1
C (dB)

spectrum adaptation term to be added to the single-number quantity to take account of the un-weighted

impact sound level as defined in EN ISO 717-2
3.5.2
weighted normalized impact sound pressure level, L (dB)

single-number quantity used to characterize the impact sound insulation of floors over a range of frequencies

{laboratory measurement}
3.5.3
weighted reduction in impact sound pressure level, ∆∆∆∆L (dB)

single-number quantity used to characterize the reduction in the impact sound pressure level {laboratory

measurement}
3.5.4
weighted standardized impact sound pressure level, L’ (dB)
nT,w

single-number-quantity used to characterize the impact sound insulation of floors over a range of frequencies

in buildings {field measurement}
3.5.5
weighted normalized flanking impact sound pressure level L (dB)
n,f,w

single-number quantity used to characterize the impact sound insulation of floors for transmission via a

specified flanking path over a range of frequencies {laboratory measurement}
3.6
flanking transmission
3.6.1
vibration reduction index, K (dB)

quantity related to the vibrational power transmission over a junction between structural elements {laboratory

measurement}
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3.6.2
normalized flanking level difference D (dB)
n,f

level difference corresponding to the reference absorption area in the receiving room in a stated frequency

band for sound transmission via a specified flanking path {laboratory measurement}

3.7
rating of flanking transmission
3.7.1
vibration reduction index, K (dB)

single-number quantity that characterizes the vibration reduction index {laboratory measurement}

3.7.2
weighted normalized flanking level difference D (dB)
n,f,w

single-number quantity that characterizes the airborne sound insulation for sound transmission via a specified

flanking path over a range of frequencies {laboratory measurement}
3.8
sound absorption
3.8.1
equivalent sound absorption area of a room, A (m )

hypothetical area of a totally absorbing surface without diffraction effects which, if it were the only absorbing

element in the room, would give the same reverberation time as the room under consideration

3.8.2
sound absorption area of an object A
obj

difference between the equivalent sound absorption area of the reverberation room with and without the test

object {laboratory measurement}
3.8.3
sound absorption coefficient, αααα

change in equivalent sound absorption area after placing a test specimen in the reverberation room, divided

by the area of the test specimen. It is only defined for a plane test specimen {laboratory measurement}

3.8.4
sound absorption coefficient at normal incidence, αα

ratio of sound power entering the surface of the test object (without return) to the incident sound power of a

plane wave at normal incidence {laboratory measurement}
3.9
rating of sound absorption
3.9.1
weighted sound absorption coefficient, αα

single-number frequency-independent value which equals the value of the reference curve at 500 Hz after

shifting it as specified in EN ISO 11654 {laboratory measurement}
3.9.2
practical sound absorption coefficient, αααα

frequency-dependent value of the sound absorption coefficient which is based on measurements on one-third

octave bands in accordance with EN ISO 354, and which is calculated in octave bands in accordance with

EN ISO 11654 {laboratory measurement}
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3.10
acoustic performance of screens, enclosures and cabins
3.10.1
in situ sound attenuation, D (dB)

difference between the screened and unscreened sound pressure levels at defined positions {field

measurement}
3.10.2
A-weighted in situ sound attenuation, D (dB)

difference between the screened and unscreened A-weighted sound pressure levels at defined positions {field

measurement}
3.10.3
sound power insulation, D (dB)

reduction in sound power level due to an enclosure {field/laboratory measurement}

3.10.4
A-weighted sound power insulation, D (dB)

reduction in A-weighted sound power level due to an enclosure for the actual sound source spectrum

{field/laboratory measurement}
3.10.5
apparent A-weighted sound pressure insulation, D’ (dB)

difference in A-weighted sound pressure levels measured in the room and in the cabin, respectively when the

actual environmental noise in used as the sound source {field measurement}
3.10.6
apparent weighted sound pressure insulation, D’ (dB)
p,w

single-number value for the sound insulation of a cabin determined in accordance with the method stated in

EN ISO 717-1 {field measurement}
3.10.7
weighted sound pressure insulation, D (dB)
p,w

single-number value for the sound insulation of a cabin determined in accordance with the method stated in

EN ISO 717-1 {laboratory measurement}
3.11
noise emission from appliances and equipment used in water supply installations
3.11.1
appliance sound pressure level, L (dB)
apn
sound pressure level for noise emission by an appliance {laboratory measurement}
3.11.2
appliance sound pressure level, L (dB)

A-weighted sound pressure level for noise emission by an appliance {laboratory measurement}

3.12
material and product properties
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3.12.1
airflow resistivity, r (Pa·s/m )

airflow resistance divided by the thickness of the test specimen (for homogeneous materials) {laboratory

measurement}
3.12.2
density, ρρρρ (kg/m )

mass per unit volume. Some building products are formed with voids or slots, the density of such products can

be quoted as either the density or the solid density, depending on what volume has been used (i.e. with or

without the void)
3.12.3
dynamic stiffness per unit area, s' (MN/m )
ratio of dynamic force to dynamic displacement {laboratory measurement}
3.12.4
longitudinal wavespeed, c (m/s)

speed of propagation of longitudinal waves (i.e. particle motion in the same direction as wave propagation)

3.12.5
specific airflow resistance, R (Pa·s/m)

product of the airflow resistance and the cross sectional area of the test specimen {laboratory measurement}

3.12.6
Young’s modulus, E (N/m )
ratio of stress to strain {laboratory measurement}
3.12.7
bending stiffness, B (Nm)

product of the Young’s modulus and the moment of inertia {laboratory measurement}

3.13
sound power
3.13.1
(dB)
sound power level, L

ten times the logarithm to the base 10 of the ratio of the sound power radiated by the source under test to the

reference sound power
NOTE For example, the A-weighted sound power is L .
3.14
declared values
3.14.1
derived laboratory value

value derived from the laboratory value or from the reference laboratory value using a calculation procedure

prescribed by the product standard for the situation where a product differs in its product parameters or end

use parameters from the tested product
3.14.2
estimated field value
estimated value that the product or element will have in the field
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3.14.3
estimated laboratory value
estimated value that the product or element will have in the laboratory
3.14.4
field value
value determined from a field test of an element, product or material
3.14.5
laboratory value

value determined from a laboratory test of an element or product with actual dimensions

3.14.6
reference laboratory value

value determined from a laboratory test of an element, product or material with reference dimensions

3.14.7
tabulated laboratory value

value determined from laboratory measurement results for a group of elements or products

3.15
other definitions
3.15.1
actual dimensions
dimensions of an element or product as placed on the market
3.15.2
component (see also material)

(used mainly in the context of a kit) product which when combined with one or more products, makes up a kit.

A component may be a construction product in the sense of the Construction Products Directive but this is not

necessary for it to be considered as part of a kit

NOTE Examples are mineral wool used in a prefabricated partition, screws or nails in a prefabricated partition and

sprinklers used in a fire extinguishing kit.
3.15.3
construction works

entire construction that may be made up of elements and/or products. Examples are: complete buildings and

roads
3.15.4
direct field of application of test results

outcome of a process (involving the application of defined rules) whereby a test result is deemed to be equally

valid for variations in one or more of the product properties and/or intended end use application(s)

3.15.5
element

part of the construction works but may also refer to the construction works as a whole. An element may

comprise of more than one product
NOTE Examples are walls, floors and roofs.
3.15.6
extended field of application of test results

3.15.6a) outcome of a process that gives a rule or method by which a prediction, for a variation of a product

property and/or its intended end use application(s), of a test result can be derived as though the product had

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been tested to the test method in question. In this case, extended application is used to derive a direct

application rule

3.15.6b) outcome of a process that predicts, for a variation of a product property and/or its intended end use

application(s), a test result as though the product had been tested to the test method in question

3.15.7
enclosure

structure enveloping a noise source designed to protect the environment from this noise source

3.15.8
end-use parameter

aspect of the mounting and fixing arrangement of a product simulating its end use (for example fixing method,

position and type of joints) which can affect the acoustic performance
3.15.9
kit

set of at least two separate components that need to be combined before permanent installation in the

construction works. A kit is the equivalent of a construction product
3.15.10
material (see also component)
substance that either alone or with other materials constitutes a product

NOTE Examples are clay for bricks, concrete for concrete blocks and paper facing for plasterboard.

3.15.11
product (construction product)

material, composite or assembly within defined manufacturing tolerances (defined by the manufacturer or a

technical specification) and, if relevant, defined limits of variability of end-use parameters, for which the

acoustic performance remains unchanged (does not get worse). A product will normally be placed onto the

market in a form in which it can be permanently incorporated in the works with the characteristics necessary

for the works or element into which it is to be incorporated. Products may be used on their own or with other

products to form an element. Some products may also be elements

NOTE Examples of building products are doors, windows, bricks, blocks, resilient materials, panel products and

ventilation ducts. Examples of building products that are also elements are prefabricated walls and partitions (sometime

called modular units). An example of a building product that is also a construction work is a modular building (e.g. a factory

assembled house).
3.15.12
product family

set of products where the results of testing any one product within the family, or testing products at the

extremes of the family and using the worst result, are valid for all other products within the family. Direct and,

in some circumstances, extended application rules define families

NOTE An example is plasterboard of the same material composition with different thicknesses and/or density (where

limits are given on these two parameters).
3.15.13
product group

set of products which, because of similarities between them, are tested in the same way to obtain the same

acoustic characteristics

NOTE Examples are glazing of different thicknesses and composition and doors of the same construction but

different sizes. The rules for mounting and fixing can, therefore, be written for all products within a group.

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3.15.14
product parameter

aspect of a product (for example thickness, composition, density) which may vary and which can have an

influence on the product's acoustic performance
3.15.15
reference dimensions

dimensions of an element or product as prescribed by the product standard for laboratory tests

3.15.16
small elements

elements defined for the purposes of EN 20140-10 excluding windows and doors, that have an area less

than 1 m which occur in a certain number of discrete sizes with well-defined lateral dimensions and which

transmit sound between two adjacent rooms or between one room and the open-air independently of the

adjoining building elements

NOTE 1 Examples are transfer air devices, airing panels (ventilators), outdoor air intakes, air vents, electrical raceways

(cable ducts), shutter boxes, transit sealing systems.

NOTE 2 The method is not primarily intended for components that constitute part of an integrated unit for which the

associated sound transmission can only be defined when the components are fully connected.

4 Requirements for the contents of a product standard
4.1 General

The purpose of a product standard reference to acoustics is to ensure that the acoustic performance of a

product is determined using test and assessment methods common to other products in the same product

group, and hence ensure that comparable test results are obtained. The level of comparison depends on the

type of product and its intended end use. For example, the sound power of all wastewater lifting plants should

be directly comparable; when testing an external wall, the overall performance of the wall as a whole should

be comparable with other external walls irrespective of their construction, but when testing two external walls

of identical construction except for the type of plasterboard used as the internal lining, it is pos

...

Questions, Comments and Discussion

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