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ASTM E2249-02(2016)

(Test Method)

Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Building Partitions and Elements Using Sound Intensity

Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Building Partitions and Elements Using Sound Intensity

SIGNIFICANCE AND USE
5.1 This test method can be used to obtain an estimate the transmission loss of building elements in a laboratory setting where the source room and the specimen mounting conditions satisfy the requirements of Test Method E90. The acceptability of the receiving room will be determined by a set of field indicators that define the quality and accuracy of the intensity estimate.  
5.2 By appropriately constructing the surface over which the intensity is measured it is possible to selectively exclude the influence of sound energy paths including the effects from joints, gaps as well as flanking sound paths. This method may be particularly useful when accurate measurements of a partition can not be made in an Test Method E90 facility because the partition sound insulation is limited by flanking transmission involving facility source and receiver room surfaces, (for example, the path from the source room floor to the receiver room floor via the isolators and the slab supporting the two). Annex A3 discusses this in detail.  
5.3 The discrete point method allows the mapping of the radiated sound intensity which can be used to identify defects or unique features (2) of the partition.  
5.4 Current research reported in the literature indicate that there exists a bias between measures of transmission loss obtained using the intensity technique and those obtained using the conventional two room reverberation technique (for example, Test Method E90,  (3) and (4)). Appendix E provides estimates of the bias that might be expected. Despite the presence of a bias, no corrections are to be applied to the measured data obtained by this test method.
SCOPE
1.1 This test method covers the measurement of airborne sound transmission loss of building partitions such as walls of all kinds, operable partitions, floor-ceiling assemblies, doors, windows, roofs, panels and other space-dividing building elements. It may also be have applications in sectors other than the building industry, although these are beyond the scope.  
1.2 The primary quantity reported by this standard is Intensity Transmission Loss (ITL) and shall not be given another name. Similarly, the single-number rating Intensity Sound Transmission Class (ISTC) derived from the measured ITL shall not be given any other name.  
1.3 This test method may be used to reveal the sound radiation characteristics of a partition or portion thereof.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1: The method for measuring the sound intensity radiated by the building element under test defined by this ASTM standard meets or exceeds those of ISO 15186-1. Special consideration will have to be given to requirements for the source room and specimen mounting if compliance with ISO 15186-1 is also desired as they differ from those of this standard.

General Information

Status
Historical
Publication Date
31-Mar-2016
ICS
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.03 - Sound Transmission
Current Stage
Ref Project

Relations

Replaces
ASTM E2249-02(2008) - Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Building Partitions and Elements Using Sound Intensity
Effective Date
01-Apr-2016
Replaced By
ASTM E2249-19 - Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Building Partitions and Elements Using Sound Intensity
Effective Date
01-Apr-2019
Referred By
ASTM E2813-18 - Standard Practice for Building Enclosure Commissioning
Effective Date
01-Apr-2016
Referred By
ASTM C634-22 - Standard Terminology Relating to Building and Environmental Acoustics
Effective Date
01-Apr-2016

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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E2249 − 02 (Reapproved 2016)
Standard Test Method for
Laboratory Measurement of Airborne Transmission Loss of
1
Building Partitions and Elements Using Sound Intensity
This standard is issued under the fixed designation E2249; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Thistestmethodispartofasetforevaluatingthesoundtransmissionlossofapartitionorpartition
elementunderlaboratoryconditions.ItdiffersfromTestMethodE90inthatthesoundpowerradiated
by the element under test is measured directly using an intensity probe rather than indirectly from the
space averaged receiver room sound pressure and the room reverberation time. This test method is
especially useful when the receiver room requirements of Test Method E90 can not be achieved, or
flanking sound involving the receiver room surfaces is present but its influence is to be circumvented
2
(1) , as discussed in Annex A3.
Others test methods to evaluate sound insulation of building elements include: Test Method E90,
airbornetransmissionlossofanisolatedpartitionelementinacontrolledlaboratoryenvironment,Test
Method E492, laboratory measurement of impact sound transmission through floors, Test Method
E336, measurement of sound isolation in buildings, Test Method E1007, measurement of impact
sound transmission in buildings, Guide E966, measurement of sound transmission through building
facades and facade elements.
1. Scope 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the measurement of airborne
responsibility of the user of this standard to establish appro-
sound transmission loss of building partitions such as walls of
priate safety and health practices and determine the applica-
all kinds, operable partitions, floor-ceiling assemblies, doors,
bility of regulatory limitations prior to use.
windows, roofs, panels and other space-dividing building
elements.Itmayalsobehaveapplicationsinsectorsotherthan
NOTE 1—The method for measuring the sound intensity radiated by the
the building industry, although these are beyond the scope. building element under test defined by this ASTM standard meets or
exceedsthoseofISO15186-1.Specialconsiderationwillhavetobegiven
1.2 The primary quantity reported by this standard is Inten-
torequirementsforthesourceroomandspecimenmountingifcompliance
sity Transmission Loss (ITL) and shall not be given another
withISO15186-1isalsodesiredastheydifferfromthoseofthisstandard.
name. Similarly, the single-number rating Intensity Sound
Transmission Class (ISTC) derived from the measured ITL
2. Referenced Documents
shall not be given any other name.
3
2.1 ASTM Standards:
1.3 This test method may be used to reveal the sound
C634Terminology Relating to Building and Environmental
radiation characteristics of a partition or portion thereof.
Acoustics
E90Test Method for Laboratory Measurement of Airborne
1.4 The values stated in SI units are to be regarded as
Sound Transmission Loss of Building Partitions and
standard. No other units of measurement are included in this
Elements
standard.
E336Test Method for Measurement of Airborne Sound
Attenuation between Rooms in Buildings
E413Classification for Rating Sound Insulation
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE33onBuilding
and Environmental Acoustics and is the direct responsibility of Subcommittee
E33.03 on Sound Transmission.
Current edition approved April 1, 2016. Published April 2016. Originally
3
approved in 2002. Last previous edition approved in 2008 as E2249–02 (2008). For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/E2249-02R16. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
Theboldfacenumbersinparenthesesrefertothelistofreferencesattheendof Standards volume information, refer to the standard’s Document Summary page on
this standard. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2249 − 02 (2016)
4
2.2 ANSI Standards: I
? n?
L 5 10log dB (3)
In
? ?
S1.9Instruments for the Measurement of Sound Intensity I
o
S1.11Specification for Octave-Band and Fractional Octave-
where:
Band Analogue and Digital Filters
4
W
2.3 ISO Standards:
212
I 5 10 (4)
2
o
m
ISO 140-3Acoustics—Measurement of Sound Insulation in
Buildings and of Building Elements—Part 3: Laboratory
3.1.4 normal signed sound intensity level, L —tentimesthe
In
Measurements of Sound Insulation of
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2249 − 02 (Reapproved 2008) E2249 − 02 (Reapproved 2016)
Standard Test Method for
Laboratory Measurement of Airborne Transmission Loss of
1
Building Partitions and Elements Using Sound Intensity
This standard is issued under the fixed designation E2249; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This standard test method is part of a set for evaluating the sound transmission loss of a partition
or partition element under laboratory conditions. It differs from Test Method E90 in that the sound
power radiated by the element under test is measured directly using an intensity probe rather than
indirectly from the space averaged receiver room sound pressure and the room reverberation time.
This test method is especially useful when the receiver room requirements of Test Method E90 can not
be achieved, or flanking sound involving the receiver room surfaces is present but its influence is to
2
be circumvented (1) , as discussed in Annex A3.
Others test methods to evaluate sound insulation of building elements include: Test Method E90,
airborne transmission loss of an isolated partition element in a controlled laboratory environment, Test
Method E492, laboratory measurement of impact sound transmission through floors, Test Method
E336, measurement of sound isolation in buildings, Test Method E1007, measurement of impact
sound transmission in buildings, Guide E966, measurement of sound transmission through building
facades and facade elements.
1. Scope
1.1 This test method covers the measurement of airborne sound transmission loss of building partitions such as walls of all
kinds, operable partitions, floor-ceiling assemblies, doors, windows, roofs, panels and other space-dividing building elements. It
may also be have applications in sectors other than the building industry, although these are beyond the scope.
1.2 The primary quantity reported by this standard is Intensity Transmission Loss (ITL) and shall not be given another name.
Similarly, the single-number rating Intensity Sound Transmission Class (ISTC) derived from the measured ITL shall not be given
any other name.
1.3 This test method may be used to reveal the sound radiation characteristics of a partition or portion thereof.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
NOTE 1—The method for measuring the sound intensity radiated by the building element under test defined by this ASTM standard meets or exceeds
those of ISO 15186-1. Special consideration will have to be given to requirements for the source room and specimen mounting if compliance with ISO
15186-1 is also desired as they differ from those of this standard.
2. Referenced Documents
3
2.1 ASTM Standards:
C634 Terminology Relating to Building and Environmental Acoustics
1
This test method is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.03
on Sound Transmission.
Current edition approved Oct. 1, 2008April 1, 2016. Published February 2009April 2016. Originally approved in 2002. Last previous edition approved in 20022008 as
E2249E2249 – 02 (2008).–02. DOI: 10.1520/E2249-02R08.10.1520/E2249-02R16.
2
The boldface numbers in parentheses refer to the list of references at the end of this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2249 − 02 (2016)
E90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
E336 Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
E413 Classi
...

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5.1 The acoustical impedance properties of a sound absorptive material are related to its physical properties, such as airflow resistance, porosity, elasticity, and density. As such, the measurements described in this test method are useful in basic research and product development of sound absorptive materials.  
5.2 Normal incidence sound absorption coefficients are more useful than random incidence coefficients in certain situations. They are used, for example, to predict the effect of placing material in a small enclosed space, such as inside a machine.  
5.3 Estimates of the random incidence or statistical absorption coefficients for materials can be obtained from normal incidence impedance data. For materials that are locally reacting, that is, without sound propagation inside the material parallel to its surface, statistical absorption coefficients can be estimated from specific normal acoustic impedance values using an expression derived by London (1).5 Locally reacting materials include those with high internal losses parallel with the surface such as porous or fibrous materials of high density or materials that are backed by partitioned cavities such as a honeycomb core. Formulas for estimating random incidence sound absorption properties for both locally and bulk-reacting materials, as well as for multilayer systems with and without air spaces have also been developed (2).
SCOPE
1.1 This test method covers the use of an impedance tube, alternatively called a standing wave apparatus, for the measurement of impedance ratios and the normal incidence sound absorption coefficients of acoustical materials.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM C522-03(2022)(Test Method)
Standard Test Method for Airflow Resistance of Acoustical Materials

SIGNIFICANCE AND USE
5.1 The specific airflow resistance of an acoustical material is one of the properties that determine its sound-absorptive and sound-transmitting properties. Measurement of specific airflow resistance is useful during product development, for quality control during manufacture, and for specification purposes.  
5.2 Valid measurements are made only in the region of laminar airflow where, aside from random measurement errors, the airflow resistance (R = P/U) is constant. When the airflow is turbulent, the apparent airflow resistance increases with an increase of volume velocity and the term “airflow resistance” does not apply.  
5.3 The specific airflow resistance measured by this test method may differ from the specific resistance measured by the impedance tube method in Test Method E384 for two reasons. In the presence of sound, the particle velocity inside a porous material is alternating while in this test method, the velocity is constant and in one direction only. Also, the particle velocity inside a porous material is not the same as the linear velocity measured outside the specimen.
SCOPE
1.1 This test method covers the measurement of airflow resistance and the related measurements of specific airflow resistance and airflow resistivity of porous materials that can be used for the absorption and attenuation of sound. Materials cover a range from thick boards or blankets to thin mats, fabrics, papers, and screens. When the material is anisotropic, provision is made for measurements along different axes of the specimen.  
1.2 This test method is designed for the measurement of values of specific airflow resistance ranging from 100 to 10 000 mks rayls (Pa·s/m) with linear airflow velocities ranging from 0.5 mm/s to 50 mm/s and pressure differences across the specimen ranging from 0.1 Pa to 250 Pa. The upper limit of this range of linear airflow velocities is a point at which the airflow through most porous materials is in partial or complete transition from laminar to turbulent flow.  
1.3 A procedure for accrediting a laboratory for the purposes of this test method is given in Annex A1.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4.1 Table 1 is provided for user to convert into cgs units.    
cgs acoustic ohm  
mks acoustic ohm (Pa·s/m3)  
105  
cgs rayl  
mks rayl (Pa·s/m)  
10    
cgs rayl/cm  
mks rayl/m (Pa·s/m2)  
103  
cgs rayl/in.  
mks rayl/m (Pa·s/m2)  
394  
mks rayl/in.  
mks rayl/m (Pa·s/m2)  
39.4  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E1042-22(Classification)
Standard Classification for Acoustically Absorptive Materials Applied by Trowel or Spray

SIGNIFICANCE AND USE
4.1 Acoustically absorptive materials are used for the control of reverberation and echoes in rooms. This standard provides a classification method for acoustically absorptive materials applied directly to surfaces by trowel or by spray.
SCOPE
1.1 This classification covers materials applied by trowel or spray to surfaces for the purpose of increasing their acoustical absorption.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E1573-22(Test Method)
Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels

SIGNIFICANCE AND USE
5.1 Acoustical performance is dependent on many factors (see Guide E1374 for a discussion on general office acoustical considerations). One of these factors is the masking sound. The masking spectrum shape and level must conform within specified tolerances throughout the treated area. The measurement and recording of these parameters are addressed in this test method.  
5.2 The results from this test method are used to determine if the masking sound meets a particular specification.
SCOPE
1.1 This test method specifies the procedure used to measure the masking sound in terms of A-weighted and one-third-octave-band sound pressure levels.  
1.2 The results of this test method can be used to determine if and where the masking sound meets (or does not meet) a particular specification.  
1.3 This test method does not evaluate the overall acoustical environment. It is intended only to measure and report the masking sound levels.  
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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