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ASTM E966-02

(Guide)

Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade Elements

Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade Elements

SCOPE
1.1 This guide covers field procedures for measuring the sound level reduction or sound transmission loss of an installed building facade or facade element in specified frequency bands. These values may be used separately to predict interior levels or combined into a single number such as by Classification E 413 (with precautions) or Classification E 1332 to estimate the sound insulating properties of the test element, FOITC, in the field. The results are applicable to installations similar to that tested when exposed to an outdoor sound field similar to that used during the measurement.
1.1.1 The facade element may be the exterior wall of a room in the building, or a portion of that wall such as a door or window, when the remainder of that wall has substantially greater sound insulation than the portion under test.
1.2 To cope with the variety of outdoor test geometry that may be encountered, several testing techniques are presented. These techniques and their general applicability are summarized in Table 1 and Figs. 1-6 .
1.3 This guide may be used to determine the outdoor-indoor level reduction (OILR), which is the difference in sound pressure between a specified outdoor sound field and the resulting sound pressure level in the room abutting the test facade or facade element. The outdoor sound field and its measurement must be thoroughly described. The resulting level reduction or transmission loss value will depend on the outdoor field geometry and the point at which it is measured or represented.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
1.5 This standard does not purport to address 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 or regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
09-Apr-2002
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 E966-99 - Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade Elements
Effective Date
10-Apr-2002
Replaced By
ASTM E966-04 - Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade Elements
Effective Date
01-Apr-2004
Referred By
ASTM E1686-16 - Standard Guide for Applying Environmental Noise Measurement Methods and Criteria
Effective Date
10-Apr-2002
Referred By
ASTM E90-09(2016) - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
Effective Date
10-Apr-2002
Referred By
ASTM E3223/E3223M-20 - Standard Guide for Specifying and Testing Field-Constructed Exterior Building Wall System Mockups in New Construction
Effective Date
10-Apr-2002
Referred By
ASTM E2813-18 - Standard Practice for Building Enclosure Commissioning
Effective Date
10-Apr-2002
Referred By
ASTM E1332-22 - Standard Classification for Rating Outdoor-Indoor Sound Attenuation
Effective Date
10-Apr-2002
Referred By
ASTM E336-23 - Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
Effective Date
10-Apr-2002
Referred By
ASTM E2964-21 - Standard Test Method for Measurement of the Normalized Insertion Loss of Doors
Effective Date
10-Apr-2002
Referred By
ASTM E2235-04(2020) - Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
Effective Date
10-Apr-2002
Referred By
ASTM C634-22 - Standard Terminology Relating to Building and Environmental Acoustics
Effective Date
10-Apr-2002
Referred By
ASTM E2179-21 - Standard Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in Reducing Impact Sound Transmission Through Concrete Floors
Effective Date
10-Apr-2002
Referred By
ASTM E1007-21 - Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures
Effective Date
10-Apr-2002

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ASTM E966-02 - Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade ElementsASTM E966-02 - Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade Elements
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ASTM E966-02 - Standard Guide for Field Measurements of Airborne Sound Insulation of Building Facades and Facade Elements
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: E 966 – 02
Standard Guide for
Field Measurements of Airborne Sound Insulation of
1
Building Facades and Facade Elements
This standard is issued under the fixed designation E 966; 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
The sound transmission of a building facade or facade element as measured under field conditions
is dependent not only on the physical characteristics of the facade, but also on the characteristics of
the incident sound field used to make the measurement. This is also true for laboratory tests of panels
using the two-room method described in Test Method E 90E90; however, the incident sound field in
these controlled tests is made uniformly diffuse. The same is approximately true for field
measurements of noise reduction and transmission loss by Test Method E 336E 336. Such uniformity
is not possible for facade measurements in the field where each situation is unique, resulting in
incident sound fields that may range all the way from free field produced by a point source to
quasi-diffuse produced by a line source.
At this time, there are insufficient data available to specify a single, standard measurement
procedure suitable for all field situations. For this reason, this guide provides a number of alternative
test procedures for the measurements of facade field level reduction and transmission loss.
1. Scope facade or facade element. The outdoor sound field and its
measurement must be thoroughly described. The resulting
1.1 This guide covers field procedures for measuring the
level reduction or transmission loss value will depend on the
soundlevelreductionorsoundtransmissionlossofaninstalled
outdoor field geometry and the point at which it is measured or
building facade or facade element in specified frequency
represented.
bands. These values may be used separately to predict interior
1.4 The values stated in SI units are to be regarded as
levels or combined into a single number such as by Classifi-
standard. The values given in parentheses are provided for
cation E 413E 413 (with precautions) or Classification
information only.
E 1332E 1332toestimatethesoundinsulatingpropertiesofthe
1.5 This standard does not purport to address the safety
test element, FOITC, in the field. The results are applicable to
concerns, if any, associated with its use. It is the responsibility
installations similar to that tested when exposed to an outdoor
of the user of this standard to establish appropriate safety and
sound field similar to that used during the measurement.
health practices and determine the applicability of regulatory
1.1.1 Thefacadeelementmaybetheexteriorwallofaroom
limitations prior to use.
in the building, or a portion of that wall such as a door or
window, when the remainder of that wall has substantially
2. Referenced Documents
greater sound insulation than the portion under test.
2.1 ASTM Standards:
1.2 To cope with the variety of outdoor test geometry that
C 423 Test Method for Sound Absorption and Sound Ab-
may be encountered, several testing techniques are presented.
2
sorption Coefficients by the Reverberation Room Method
These techniques and their general applicability are summa-
2
C 634 Terminology Relating To Environmental Acoustics
rized in Table 1 and Figs. 1-6.
E90 Test Method for Laboratory Measurement ofAirborne
1.3 This guide may be used to determine the outdoor-indoor
2
Sound Transmission Loss of Building Partitions
level reduction (OILR), which is the difference in sound
E 336 Test Method for Measurement of Airborne Sound
pressure between a specified outdoor sound field and the
2
Insulation in Buildings
resulting sound pressure level in the room abutting the test
2
E 413 Classification for Rating Sound Insulation
E 1332 Classification for Determination of Outdoor-Indoor
2
Transmission Class
1
ThisguideisunderthejurisdictionofASTMCommitteeE33onEnvironmental
Acoustics and is the direct responsibility of Subcommittee E33.03 onTransmission.
Current edition approved April 10, 2002. Published June 2002. Originally
2
published as E 966 – 84. Last previous edition E 966 – 99. Annual Book of ASTM Standards, Vol 04.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
E966–02
A
TABLE 1 Application Guide to Measurement of Outdoor-Indoor Level Reduction (OILR) of Faca
...

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3.2.4.1 Discussion—The mandatory language of section 3.2.4 is consistent with the mandatory language from §E2 of Form and Style for ASTM Standards (April 2020) and with the ASTM Committee E33 bylaws in place when this standard was published; it reflects a situation that exists, it does not prescribe anything.  
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1.1 This terminology covers terms, related definitions, and descriptions of terms used or likely to be used in building and environmental acoustics standards. Definitions of terms are special-purpose definitions that are consistent with the standard definitions but are written to ensure that a specific building and environmental acoustics standard is properly understood and precisely interpreted. The primary focus of this document is upon terms, definitions and descriptions found within standards under the jurisdiction of ASTM Committee E33; however, terms, definitions and descriptions that are of general interest to the field of acoustics are also included.  
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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.
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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  
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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.  
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ASTM E1042-22(Classification)
Standard Classification for Acoustically Absorptive Materials Applied by Trowel or Spray

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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.
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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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