ASTM E336-10
(Test Method)Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
SIGNIFICANCE AND USE
The main part of this standard uses procedures originally developed for laboratory measurements of the transmission loss of partitions. These procedures assume that the rooms in which the measurements are made have a sound field that reasonably approximates a diffuse field. Sound pressure levels in such rooms are reasonably uniform throughout the room and average levels vary inversely with the logarithm of the room sound absorption. Not all rooms will satisfy these conditions. Practical experience and controlled studies (1) have shown that the test method is applicable to smaller spaces normally used for work or living, such as rooms in multi-family dwellings, hotel guest rooms, meeting rooms, and offices with volumes less than 150 cubic meters. The measures appropriate for such spaces are NR, NNR, and ATL. The corresponding single number ratings are NIC, NNIC and ASTC. The ATL and ASTC may be measured between larger spaces that meet a limitation on absorption in the spaces to provide uniform sound distribution.
Annex A2 was developed for use in spaces that are very large (volume of 150 m3 or greater). Sound pressure levels during testing can vary markedly across large rooms so that the degree of isolation can vary strongly with distance from the common (separating) partition. This procedure evaluates the isolation observed near the partition. The appropriate measure is NR, and the appropriate single number rating is NIC.
It is sometimes necessary to demonstrate that the sound insulation of a partition meets or exceeds a specific criterion. Annex A1 provides additional requirements, and describes how shielding procedures can be used to reduce flanking transmission in stages to show that a partition has achieved a minimum value of the FTL or minimum value of the FSTC which may meet or exceed the criterion. If it is demonstrated that no significant flanking exists through shielding of all potential flanking paths, then, and only then, FTL and FSTC may be reported ...
SCOPE
1.1 The sound isolation between two spaces in a building is determined by a combination of the direct transmission through the nominally separating building element (as normally measured in a laboratory) and any transmission along a number of indirect paths, usually referred to as flanking paths. Fig. 1 illustrates the direct paths and some possible structural flanking paths. Additional non-structural flanking paths may include transmission through common air ducts between rooms, or doors to the corridor from adjacent rooms.
1.2 The main part of this test method defines procedures and metrics to assess the sound isolation between two rooms or portions thereof in a building separated by a common partition including both direct and flanking transmission paths or the apparent sound insulation of the separating partition. Appropriate measures and their single number ratings are the noise reduction (NR) and noise isolation class (NIC), the normalized noise reduction (NNR) and normalized noise isolation class (NNIC), and the apparent transmission loss (ATL) and apparent sound transmission class (ASTC). With the exception of the ATL and ASTC under specified conditions, these procedures in the main part of the test method are only applicable when both room volumes are less than 150 m3.
Note 1—The word “partition” in this test method includes all types of walls, floors, or any other boundaries separating two spaces. The boundaries may be permanent, operable, or movable.
1.3 Annex A1 provides methods to assess the sound transmission through a partition or partition element with the influence of flanking transmission reduced. These methods may be used when it must be demonstrated that a partition has achieved a specified minimum sound attenuation. The results are the field transmission loss (FTL) and field sound transmission class (FSTC).
1.4 Annex A2 provides methods to measure the sound isolation between portions of two ...
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Designation:E336–10
Standard Test Method for
Measurement of Airborne Sound Attenuation between
1
Rooms in Buildings
This standard is issued under the fixed designation E336; 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.
This standard has been approved for use by agencies of the Department of Defense.
INTRODUCTION
This test method is part of a set of standards for evaluating the sound-insulating properties of
building elements. It is designed to measure the sound isolation between two rooms or to estimate
lower limits for sound transmission through a partition element installed as an interior part of a
building. Others in the set cover the airborne sound transmission loss of an isolated partition element
in a controlled laboratory environment (Test Method E90), the laboratory measurement of impact
sound transmission through floors (Test Method E492), the measurement of impact sound transmis-
sion in buildings (Test Method E1007), the measurement of sound transmission through building
facades and facade elements (Guide E966), and the measurement of sound transmission through a
common plenum between two rooms (Test Method E1414).
1. Scope the main part of the test method are only applicable when both
3
room volumes are less than 150 m .
1.1 The sound isolation between two spaces in a building is
determinedbyacombinationofthedirecttransmissionthrough
NOTE 1—The word “partition” in this test method includes all types of
the nominally separating building element (as normally mea-
walls, floors, or any other boundaries separating two spaces. The bound-
aries may be permanent, operable, or movable.
sured in a laboratory) and any transmission along a number of
indirect paths, usually referred to as flanking paths. Fig. 1
1.3 Annex A1 provides methods to assess the sound trans-
illustratesthedirectpathsandsomepossiblestructuralflanking
mission through a partition or partition element with the
paths. Additional non-structural flanking paths may include
influence of flanking transmission reduced. These methods
transmission through common air ducts between rooms, or
may be used when it must be demonstrated that a partition has
doors to the corridor from adjacent rooms.
achieved a specified minimum sound attenuation. The results
1.2 Themainpartofthistestmethoddefinesproceduresand
are the field transmission loss (FTL) and field sound transmis-
metrics to assess the sound isolation between two rooms or
sion class (FSTC).
portions thereof in a building separated by a common partition
1.4 Annex A2 provides methods to measure the sound
including both direct and flanking transmission paths or the
isolationbetweenportionsoftworoomsinabuildingseparated
apparent sound insulation of the separating partition. Appro-
byacommonpartitionincludingbothdirectandflankingpaths
3
priate measures and their single number ratings are the noise
whenatleastoneoftheroomshasavolumeof150m ormore.
reduction(NR)andnoiseisolationclass(NIC),thenormalized
The results are the noise reduction (NR) and noise isolation
noise reduction (NNR) and normalized noise isolation class
class (NIC).
(NNIC), and the apparent transmission loss (ATL) and appar-
1.5 The values stated in SI units are to be regarded as
entsoundtransmissionclass(ASTC).Withtheexceptionofthe
standard. No other units of measurement are included in this
ATLandASTCunderspecifiedconditions,theseproceduresin
standard.
1.6 The text of this test method references notes and
footnoteswhichprovideexplanatorymaterial.Thesenotesand
1
footnotes (excluding those in tables and figures) shall not be
ThistestmethodisunderthejurisdictionofASTMCommitteeE33onBuilding
and Environmental Acoustics and is the direct responsibility of Subcommittee
considered as requirements of the standard.
E33.03 on Sound Transmission.
1.7 This standard may involve hazardous materials, opera-
Current edition approved Sept. 1, 2010. Published January 2011. Originally
tions, and equipment. This standard does not purport to
approved in 1971. Last previous edition approved in 2009 as E336–09. DOI:
10.1520/E0336-10. address all of the safety concerns, if any, associated with its
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
E336–10
use. It is the responsibility of the user of this standard to S1.43 SpecificationsforIntegrating-AveragingSoundLevel
establish appropriate safety and health practices and deter- Meters
4
mine the applicability of regulatory limitations prior to use. 2.3 IEC Standard:
IEC 60942 Electroacous
...
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:E336–09 Designation:E336–10
Standard Test Method for
Measurement of Airborne Sound Attenuation between
1
Rooms in Buildings
This standard is issued under the fixed designation E336; 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.
This standard has been approved for use by agencies of the Department of Defense.
INTRODUCTION
This test method is part of a set of standards for evaluating the sound-insulating properties of
building elements. It is designed to measure the sound isolation between two rooms or to estimate
lower limits for sound transmission through a partition element installed as an interior part of a
building. Others in the set cover the airborne sound transmission loss of an isolated partition element
in a controlled laboratory environment (Test Method E90), the laboratory measurement of impact
sound transmission through floors (Test Method E492), the measurement of impact sound transmis-
sion in buildings (Test Method E1007), the measurement of sound transmission through building
facades and facade elements (Guide E966), and the measurement of sound transmission through a
common plenum between two rooms (Test Method E1414), and the measurement of sound
transmission through door panels and systems (Test Method E1408).
1. Scope
1.1 Thesoundisolationbetweentwospacesinabuildingisdeterminedbyacombinationofthedirecttransmissionthroughthe
nominally separating building element (as normally measured in a laboratory) and any transmission along a number of indirect
paths,usuallyreferredtoasflankingpaths.Fig.1illustratesthedirectpathsandsomepossiblestructuralflankingpaths.Additional
non-structural flanking paths may include transmission through common air ducts between rooms, or doors to the corridor from
adjacent rooms.
1.2 Themainpartofthistestmethoddefinesproceduresandmetricstoassessthesoundisolationbetweentworoomsorportions
thereof in a building separated by a common partition including both direct and flanking transmission paths or the apparent sound
insulationoftheseparatingpartition.Appropriatemeasuresandtheirsinglenumberratingsarethenoisereduction(NR)andnoise
isolation class (NIC), the normalized noise reduction (NNR) and normalized noise isolation class (NNIC), and the apparent
transmission loss (ATL) and apparent sound transmission class (ASTC).With the exception of theATLandASTC under specified
conditions, these procedures in the main part of the test method are only applicable when both room volumes are less than 150
3
m .
NOTE 1—The word “partition” in this test method includes all types of walls, floors, or any other boundaries separating two spaces. The boundaries
may be permanent, operable, or movable.
1.3 AnnexA1 provides methods to assess the sound transmission through a partition or partition element with the influence of
flanking transmission reduced.These methods may be used when it must be demonstrated that a partition has achieved a specified
minimum sound attenuation. The results are the field transmission loss (FTL) and field sound transmission class (FSTC).
1.4 Annex A2 provides methods to measure the sound isolation between portions of two rooms in a building separated by a
3
common partition including both direct and flanking paths when at least one of the rooms has a volume of 150 m or more. The
results are the noise reduction (NR) and noise isolation class (NIC).
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6
1.6 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
1
This test method 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 Sept. 1, 2009.2010. Published September 2009.January 2011. Originally approved in 1971. Last previous edition approved in 20082009 as
E336–089. DOI: 10.1520/E0336-109.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
E336–10
1.7 This standard may involve hazardous m
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