ASTM E1332-10a
(Classification)Standard Classification for Rating Outdoor-Indoor Sound Attenuation
Standard Classification for Rating Outdoor-Indoor Sound Attenuation
SIGNIFICANCE AND USE
This classification provides a single number rating for transmission loss or noise reduction data that have been measured or calculated. This rating is based on the difference between the overall A-weighted sound level of the sound spectrum given in Table 1 and the overall A-weighted sound level of the spectrum that results from arithmetically subtracting the transmission loss or noise reduction data from this spectrum. The spectrum shape is an average of three typical spectra from transportation sources (aircraft takeoff, freeway, and railroad passby). A study showed that this classification correlated well with the A-weighted and loudness reductions (see ISO 532) calculated for each of the typical spectra for the one-third octave band range of 50 to 5000 Hz. The calculated numeric value of the rating is based on the sound transmission loss or noise reduction values for a particular specimen and depends only on that data and the shape of the reference source spectrum used in the calculation. The values shown in Table 1 have an arbitrary reference level. Single-number ratings should always be used with caution. Specimens having the same rating can result in different indoor spectra depending on the variation of their transmission loss with frequency. Also, if the actual spectrum of the outdoor sound is different from that assumed in Table 1, the overall A-weighted outdoor-indoor noise reduction may be different from the OINIC.
This classification requires sound transmission loss (TL), apparent outdoor-indoor transmission lost (AOITL(θ)) , or outdoor-indoor noise reduction measurements (OILR(θ)) in one-third octave bands from 80 to 4000 Hz. Due to accuracy limitations given in Test Method E90 and Guide E966, measurements below the 100 Hz one-third octave band are not usually reported. Studies have shown that data in the 80 Hz one-third octave band are necessary to obtain acceptable correlations for transportation sound sources. For the purposes of this classificati...
SCOPE
1.1 The purpose of this classification is to provide a method to calculate single-number ratings that can be used for assesing the isolation for the outdoor sound provided by a building or comparing building facade specimens including walls, doors, windows, and combinations thereof, including complete structures. These ratings are designed to correlate with subjective impressions of the ability of building elements to reduce the penetration of outdoor ground and air transportation noise. These ratings provide an evaluation and rank ordering of the performance of test specimens based on their effectiveness at controlling the sound of a specific outdoor sound spectrum called the reference source spectrum.
1.2 In addition to the calculation method, this classification defines some ratings not defined in other standards. Other standards may define additional ratings based on the method of this classification.
1.3 The rating does not necessarily relate to the perceived aesthetic quality of the transmitted sound. Different facade elements with similar ratings may differ significantly in the proportion of low and high frequency sound that they transmit. It is best to use specific sound transmission loss values, in conjunction with actual spectra of outdoor and indoor sound levels, for making final selections of facade elements.
1.4 Excluded from the scope of this classification are applications involving noise spectra differing markedly from those described in 4.1. Thus excluded, for example, would be certain industrial noises with high levels at frequencies below the 80 Hz one-third octave band, relative to levels at higher frequencies. However, for any source with a spectrum similar to those in 4.1, this classification provides a more reliable ranking of the performance of partitions and facade elements than do other classifications such as Classification E413.
1.5 The values stated in SI units are to be regarded as...
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Designation:E1332 −10a
Standard Classification for
1
Rating Outdoor-Indoor Sound Attenuation
This standard is issued under the fixed designation E1332; 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 classification is part of a set of ratings for the sound isolating properties of materials, building
elements, and structures. It is based on A-weighted reduction of a transportation noise source. Other
ratings include Classification E413 that rates the ability of a partition to reduce speech and other
sounds within a limited frequency range, and Classification E989 that provides a rating method for
comparing the impact-insulation properties of floor-ceiling assemblies.
1. Scope 1.4 Excluded from the scope of this classification are
applications involving noise spectra differing markedly from
1.1 The purpose of this classification is to provide a method
those described in 4.1. Thus excluded, for example, would be
to calculate single-number ratings that can be used for assesing
certain industrial noises with high levels at frequencies below
the isolation for the outdoor sound provided by a building or
the 80 Hz one-third octave band, relative to levels at higher
comparing building facade specimens including walls, doors,
frequencies. However, for any source with a spectrum similar
windows, and combinations thereof, including complete struc-
to those in 4.1, this classification provides a more reliable
tures. These ratings are designed to correlate with subjective
ranking of the performance of partitions and facade elements
impressions of the ability of building elements to reduce the
2 than do other classifications such as Classification E413.
penetration of outdoor ground and air transportation noise.
These ratings provide an evaluation and rank ordering of the 1.5 The values stated in SI units are to be regarded as
performance of test specimens based on their effectiveness at standard. No other units of measurement are included in this
controlling the sound of a specific outdoor sound spectrum standard.
called the reference source spectrum.
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.2 In addition to the calculation method, this classification
responsibility of the user of this standard to establish appro-
defines some ratings not defined in other standards. Other
priate safety and health practices and determine the applica-
standards may define additional ratings based on the method of
bility of regulatory limitations prior to use.
this classification.
1.3 The rating does not necessarily relate to the perceived
2. Referenced Documents
aesthetic quality of the transmitted sound. Different facade
3
2.1 ASTM Standards:
elements with similar ratings may differ significantly in the
C634 Terminology Relating to Building and Environmental
proportion of low and high frequency sound that they transmit.
Acoustics
It is best to use specific sound transmission loss values, in
E90 Test Method for Laboratory Measurement of Airborne
conjunction with actual spectra of outdoor and indoor sound
Sound Transmission Loss of Building Partitions and
levels, for making final selections of facade elements.
Elements
E413 Classification for Rating Sound Insulation
1
E966 Guide for Field Measurements of Airborne Sound
This classification is under the jurisdiction of ASTM Committee E33 on
Building and Environmental Acoustics and is the direct responsibility of Subcom- Attenuation of Building Facades and Facade Elements
mittee E33.03 on Sound Transmission.
Current edition approved May 1, 2010. Published June 2010. Originally
3
approved in 1990. Last previous edition approved in 2010 as E1332–10. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/E1332-10A. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
This classification may be used in conjunction with Test Method E90 or Guide Standards volume information, refer to the standard’s Document Summary page on
E966.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1332−10a
TABLE 1 Reference Source Spectrum
E989 Classification for Determination of Impact Insulation
Class (IIC) One-third Octave Band
Center Frequency, Sound Level, dB
2.2 ANSI Standard:
Hz
S1.4 American National Standard Specification for Sound
80 103
4
Level Meters
100 102
125 101
2.3 ISO Standard:
160 98
ISO 532 Acoustics–Method for Calculating L
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:E1332–10 Designation: E1332 – 10a
Standard Classification for
Determination of Outdoor-Indoor Transmission ClassRating
1
Outdoor-Indoor Sound Attenuation
This standard is issued under the fixed designation E1332; 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 classification is part of a set of ratings for the sound isolating properties of materials, building
elements, and structures. It is based on A-weighted reduction of a transportation noise source. Other
ratings include Classification E413 that rates the ability of a partition to reduce speech and other
sounds within a limited frequency range, and Classification E989 that provides a rating method for
comparing the impact-insulation properties of floor-ceiling assemblies.
1. Scope
1.1Thepurposeofthisclassificationistoprovideasingle-numberratingthatcanbeusedforcomparingbuildingfacadedesigns,
including walls, doors, windows, and combinations thereof. This rating is designed to correlate with subjective impressions of the
ability of building elements to reduce the overall loudness of ground and air transportation noise.
1.1 The purpose of this classification is to provide a method to calculate single-number ratings that can be used for assesing the
isolation for the outdoor sound provided by a building or comparing building facade specimens including walls, doors, windows,
and combinations thereof, including complete structures.These ratings are designed to correlate with subjective impressions of the
2
ability of building elements to reduce the penetration of outdoor ground and air transportation noise. It is intended to be used as
a rank ordering device.
1.2The rating does not necessarily relate to the perceived aesthetic quality of the transmitted sound. Different facade elements
with similar ratings may differ significantly in the proportion of low and high frequency sound that they transmit. It is best to use
specific sound transmission loss values, in conjunction with actual spectra of outdoor and indoor sound levels, for making final
selections of facade elements.
1.3Excluded from the scope of this classification are applications involving noise spectra differing markedly from those
described in These ratings provide an evaluation and rank ordering of the performance of test specimens based on their
effectiveness at controlling the sound of a specific outdoor sound spectrum called the reference source spectrum.
1.2 In addition to the calculation method, this classification defines some ratings not defined in other standards. Other standards
may define additional ratings based on the method of this classification.
1.3 The rating does not necessarily relate to the perceived aesthetic quality of the transmitted sound. Different facade elements
with similar ratings may differ significantly in the proportion of low and high frequency sound that they transmit. It is best to use
specific sound transmission loss values, in conjunction with actual spectra of outdoor and indoor sound levels, for making final
selections of facade elements.
1.4 Excluded from the scope of this classification are applications involving noise spectra differing markedly from those
described in 4.1. Thus excluded, for example, would be certain industrial noises with high levels at frequencies below the 80 Hz
one-third octave band, relative to levels at higher frequencies. However, for any source with a spectrum similar to those in 4.1,
this classification provides a more reliable ranking of the performance of partitions and facade elements than do other
classifications such as Classification E413.
1.4The1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.51.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
1
This classification is under the jurisdiction ofASTM Committee E33 on Building and EnvironmentalAcoustics and is the direct responsibility of Subcommittee E33.03
on Sound Transmission.
Current edition approved AprilMay 1, 2010. Published MayJune 2010. Originally approved in 1990. Last previous edition approved in 20032010 as E1332 - 90 (2003).
E1332–10. DOI: 10.1520/E1332-10A.
2
This classification may be used in conjunction with Test Metho
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