ASTM E989-21
(Classification)Standard Classification for Determination of Single-Number Metrics for Impact Noise
Standard Classification for Determination of Single-Number Metrics for Impact Noise
SIGNIFICANCE AND USE
4.1 The rating increases as the impact sound attenuation of the floor ceiling structure increases. The rating can be used by architects, builders, and specification and code authorities for acoustical design purposes in building constructions.
4.2 The rating strictly only applies to excitation by the standard tapping machine defined in Test Methods E492 and E1007. It does not deal with low frequency sounds below 100 Hz that are typically generated below lightweight joist floors when they are walked on. Nor does it deal with the squeaking, crunching or rattling sounds that can occur in joist construction when elements in the construction are loose and occupants walk on the floor.
4.3 This classification shall only be used with one-third octave band data.
SCOPE
1.1 This classification provides a method for determining a rating that can be used to compare the levels of impact noise generated by a standard tapping machine and transmitted through different floor-ceiling assemblies.
1.2 The name given to the rating is assigned by the test method that invokes this classification.
1.3 This classification is applicable only to one third octave band impact noise data obtained using the standard tapping machine described in Test Methods E492 and E1007.
1.4 Test methods that invoke this classification include:
1.4.1 Test Method E492 – the single-number rating is called impact insulation class (IIC).
1.4.2 Test Method E1007 – the single-number ratings are called apparent impact insulation class (AIIC), impact sound rating (ISR), and normalized impact sound rating (NISR).
1.4.3 Test Method E2179 – the single-number rating is called the change in impact insulation class (ΔIIC).
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.
General Information
- Status
- Published
- Publication Date
- 30-Apr-2021
- Technical Committee
- E33 - Building and Environmental Acoustics
- Drafting Committee
- E33.10 - Structural Acoustics and Vibration
Relations
- Effective Date
- 01-Oct-2016
- Effective Date
- 01-Sep-2014
- Effective Date
- 15-Oct-2013
- Effective Date
- 01-Oct-2013
- Effective Date
- 01-Sep-2013
- Effective Date
- 01-Apr-2013
- Effective Date
- 01-Dec-2011
- Effective Date
- 01-Mar-2011
- Effective Date
- 01-Mar-2011
- Effective Date
- 01-Sep-2010
- Effective Date
- 01-Jun-2010
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Apr-2009
- Effective Date
- 01-Sep-2008
Overview
ASTM E989-21 is the international standard classification for the determination of single-number metrics for impact noise in building constructions. Issued by ASTM International, this standard provides a method for assessing and comparing levels of impact noise transmitted through different floor-ceiling assemblies using a defined testing process. The resulting rating, which increases as the impact sound attenuation of the assembly improves, serves as a practical tool for architects, builders, acoustical consultants, and building code authorities during the design and specification of floor systems focused on acoustic performance.
Key Topics
- Impact Noise Ratings: The standard outlines how to determine single-number metrics, such as Impact Insulation Class (IIC), Apparent Impact Insulation Class (AIIC), Impact Sound Rating (ISR), and Normalized Impact Sound Rating (NISR). These ratings enable straightforward comparison of different floor-ceiling assemblies’ performance against impact noise.
- Test Methods: ASTM E989-21 specifies that its classification should only be used with impact noise data collected using a standard tapping machine, as described in ASTM E492 and ASTM E1007. The testing must be conducted and reported in one-third octave bands.
- Scope of Evaluation: The standard restricts its relevance strictly to excitation caused by the standard tapping machine and does not cover low-frequency noises below 100 Hz or atypical sounds such as squeaking or rattling that might occur in certain floor assemblies.
Applications
The metrics and classifications established by ASTM E989-21 play a central role in the following areas:
- Building Design and Specification: Enables architects, structural engineers, and acoustic consultants to effectively assess, select, and specify floor-ceiling assemblies with appropriate impact sound insulation for multifamily housing, hotels, hospitals, offices, and other noise-sensitive spaces.
- Building Regulation Compliance: Provides a uniform basis for building code authorities to assess whether a given floor-ceiling construction meets minimum acoustical performance requirements.
- Product Comparison and Improvement: Offers manufacturers of construction materials and flooring assemblies a standardized method to benchmark and enhance the impact sound insulation performance of their products.
- Acoustic Testing and Certification: Supports testing laboratories and certification bodies in providing reliable and comparable results to their clients in the building sector.
Related Standards
- ASTM E492: Standard Test Method for Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the Tapping Machine. This method is essential for laboratory-based measurement and forms the basis for determining the Impact Insulation Class (IIC).
- ASTM E1007: Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures. Used for on-site assessment, producing ratings such as AIIC, ISR, and NISR.
- ASTM E2179: Standard Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in Reducing Impact Sound Transmission Through Concrete Floors. Provides a metric for the change in impact insulation class (ΔIIC), focusing on the benefit provided by floor coverings.
- ASTM C634: Terminology Relating to Building and Environmental Acoustics, which ensures consistency in the use of specialized terms such as decibel, impact insulation class, sound insulation, and sound pressure within the standards framework.
Summary
ASTM E989-21 is critical for anyone involved in the acoustical design and evaluation of floor-ceiling assemblies. By establishing a clear, reproducible classification for impact noise metrics, it ensures accuracy and comparability in acoustic testing, product development, and building code compliance, enhancing both occupant comfort and regulatory alignment in construction projects worldwide.
Keywords: ASTM E989-21, single-number metrics, impact noise, floor-ceiling assemblies, Impact Insulation Class, IIC, building acoustics, tapping machine, sound insulation standards, building codes, architectural acoustics.
Buy Documents
ASTM E989-21 - Standard Classification for Determination of Single-Number Metrics for Impact Noise
REDLINE ASTM E989-21 - Standard Classification for Determination of Single-Number Metrics for Impact Noise
Get Certified
Connect with accredited certification bodies for this standard
ICC Evaluation Service
Building products evaluation and certification.
QAI Laboratories
Building and construction product testing and certification.
Aboma Certification B.V.
Specialized in construction, metal, and transport sectors.
Sponsored listings
Frequently Asked Questions
ASTM E989-21 is a standard published by ASTM International. Its full title is "Standard Classification for Determination of Single-Number Metrics for Impact Noise". This standard covers: SIGNIFICANCE AND USE 4.1 The rating increases as the impact sound attenuation of the floor ceiling structure increases. The rating can be used by architects, builders, and specification and code authorities for acoustical design purposes in building constructions. 4.2 The rating strictly only applies to excitation by the standard tapping machine defined in Test Methods E492 and E1007. It does not deal with low frequency sounds below 100 Hz that are typically generated below lightweight joist floors when they are walked on. Nor does it deal with the squeaking, crunching or rattling sounds that can occur in joist construction when elements in the construction are loose and occupants walk on the floor. 4.3 This classification shall only be used with one-third octave band data. SCOPE 1.1 This classification provides a method for determining a rating that can be used to compare the levels of impact noise generated by a standard tapping machine and transmitted through different floor-ceiling assemblies. 1.2 The name given to the rating is assigned by the test method that invokes this classification. 1.3 This classification is applicable only to one third octave band impact noise data obtained using the standard tapping machine described in Test Methods E492 and E1007. 1.4 Test methods that invoke this classification include: 1.4.1 Test Method E492 – the single-number rating is called impact insulation class (IIC). 1.4.2 Test Method E1007 – the single-number ratings are called apparent impact insulation class (AIIC), impact sound rating (ISR), and normalized impact sound rating (NISR). 1.4.3 Test Method E2179 – the single-number rating is called the change in impact insulation class (ΔIIC). 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.
SIGNIFICANCE AND USE 4.1 The rating increases as the impact sound attenuation of the floor ceiling structure increases. The rating can be used by architects, builders, and specification and code authorities for acoustical design purposes in building constructions. 4.2 The rating strictly only applies to excitation by the standard tapping machine defined in Test Methods E492 and E1007. It does not deal with low frequency sounds below 100 Hz that are typically generated below lightweight joist floors when they are walked on. Nor does it deal with the squeaking, crunching or rattling sounds that can occur in joist construction when elements in the construction are loose and occupants walk on the floor. 4.3 This classification shall only be used with one-third octave band data. SCOPE 1.1 This classification provides a method for determining a rating that can be used to compare the levels of impact noise generated by a standard tapping machine and transmitted through different floor-ceiling assemblies. 1.2 The name given to the rating is assigned by the test method that invokes this classification. 1.3 This classification is applicable only to one third octave band impact noise data obtained using the standard tapping machine described in Test Methods E492 and E1007. 1.4 Test methods that invoke this classification include: 1.4.1 Test Method E492 – the single-number rating is called impact insulation class (IIC). 1.4.2 Test Method E1007 – the single-number ratings are called apparent impact insulation class (AIIC), impact sound rating (ISR), and normalized impact sound rating (NISR). 1.4.3 Test Method E2179 – the single-number rating is called the change in impact insulation class (ΔIIC). 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.
ASTM E989-21 is classified under the following ICS (International Classification for Standards) categories: 91.060.30 - Ceilings. Floors. Stairs; 91.120.20 - Acoustics in building. Sound insulation. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM E989-21 has the following relationships with other standards: It is inter standard links to ASTM E1007-16, ASTM E1007-14, ASTM E1007-13b, ASTM E1007-13a, ASTM C634-13, ASTM E1007-13, ASTM C634-11, ASTM E1007-11, ASTM E1007-11e1, ASTM C634-10a, ASTM C634-10, ASTM C634-09, ASTM E2179-03(2009), ASTM E492-09, ASTM C634-08a. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM E989-21 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.
Designation:E989 −21
Standard Classification for
Determination of Single-Number Metrics for Impact Noise
This standard is issued under the fixed designation E989; 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.
1. Scope C634 Terminology Relating to Building and Environmental
Acoustics
1.1 This classification provides a method for determining a
E492 Test Method for Laboratory Measurement of Impact
rating that can be used to compare the levels of impact noise
Sound Transmission Through Floor-Ceiling Assemblies
generated by a standard tapping machine and transmitted
Using the Tapping Machine
through different floor-ceiling assemblies.
E1007 Test Method for Field Measurement of Tapping
1.2 The name given to the rating is assigned by the test
Machine Impact Sound Transmission Through Floor-
method that invokes this classification.
Ceiling Assemblies and Associated Support Structures
1.3 This classification is applicable only to one third octave
E2179 Test Method for Laboratory Measurement of the
band impact noise data obtained using the standard tapping Effectiveness of Floor Coverings in Reducing Impact
machine described in Test Methods E492 and E1007.
Sound Transmission Through Concrete Floors
1.4 Test methods that invoke this classification include:
3. Terminology
1.4.1 Test Method E492 – the single-number rating is called
impact insulation class (IIC).
3.1 The following terms used in this classification are
1.4.2 Test Method E1007 – the single-number ratings are
defined in Terminology C634.
called apparent impact insulation class (AIIC), impact sound
decibel sound
rating (ISR), and normalized impact sound rating (NISR).
impact insulation class
level
1.4.3 Test Method E2179 – the single-number rating is
octave band
called the change in impact insulation class (∆IIC).
sound insulation
sound pressure
1.5 This standard does not purport to address all of the
sound pressure level
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4.1 The rating increases as the impact sound attenuation of
1.6 This international standard was developed in accor-
the floor ceiling structure increases. The rating can be used by
dance with internationally recognized principles on standard-
architects, builders, and specification and code authorities for
ization established in the Decision on Principles for the
acoustical design purposes in building constructions.
Development of International Standards, Guides and Recom-
4.2 The rating strictly only applies to excitation by the
mendations issued by the World Trade Organization Technical
standard tapping machine defined in Test Methods E492 and
Barriers to Trade (TBT) Committee.
E1007. It does not deal with low frequency sounds below 100
Hz that are typically generated below lightweight joist floors
2. Referenced Documents
when they are walked on. Nor does it deal with the squeaking,
2.1 ASTM Standards:
crunching or rattling sounds that can occur in joist construction
when elements in the construction are loose and occupants
walk on the floor.
This classification is under the jurisdiction of ASTM Committee E33 on
4.3 This classification shall only be used with one-third
Building and Environmental Acoustics and is the direct responsibility of Subcom-
octave band data.
mittee E33.10 on Structural Acoustics and Vibration.
Current edition approved May 1, 2021. Published May 2021. Originally
approved in 1984. Last previous edition approved in 2018 as E989 – 18. DOI:
5. Basis of Classification
10.1520/E0989-21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 Table 1 lists the sound pressure levels defining the shape
contact ASTM Customer Service
...
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: E989 − 18 E989 − 21
Standard Classification for
Determination of Single-Number Metrics for Impact Noise
This standard is issued under the fixed designation E989; 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.
1. Scope
1.1 This classification provides a method for determining a rating that can be used to compare the levels of impact noise generated
by a standard tapping machine and transmitted through different floor-ceiling assemblies.
1.2 The name given to the rating is assigned by the test method that invokes this classification.
1.3 This classification is applicable only to one third octave band impact noise data obtained using the standard tapping machine
described in Test Methods E492 and E1007.
1.4 Test methods that invoke this classification include:
1.4.1 Test Method E492 – the single-number rating is called impact insulation class (IIC).
1.4.2 Test Method E1007 – the single-number ratings are called apparent impact insulation class (AIIC), impact sound rating
(ISR), and normalized impact sound rating (NISR).
1.4.3 Test Method E2179 – the single-number rating is called the change in impact insulation class (ΔIIC).
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.
2. Referenced Documents
2.1 ASTM Standards:
C634 Terminology Relating to Building and Environmental Acoustics
E492 Test Method for Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the
Tapping Machine
E1007 Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies
and Associated Support Structures
This classification is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.10
on Structural Acoustics and Vibration.
Current edition approved Nov. 1, 2018May 1, 2021. Published December 2018May 2021. Originally approved in 1984. Last previous edition approved in 20122018 as
E989 – 06 (2012).E989 – 18. DOI: 10.1520/E0989-18.10.1520/E0989-21.
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
E989 − 21
E2179 Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in Reducing Impact Sound
Transmission Through Concrete Floors
3. Terminology
3.1 The following terms used in this classification are defined in Terminology C634.
decibel sound
impact insulation class
level
octave band
sound insulation
sound pressure
sound pressure level
4. Significance and Use
4.1 The rating increases as the impact sound attenuation of the floor ceiling structure increases. The rating can be used by
architects, builders, and specification and code authorities for acoustical design purposes in building constructions.
4.2 The rating strictly only applies to excitation by the standard tapping machine defined in Test Methods E492 and E1007. It does
not deal with low frequency sounds below 100 Hz that are typically generated below lightweight joist floors when they are walked
on. Nor does it deal with the squeaking, crunching or rattling sounds that can occur in joist construction when elements in the
construction are loose and
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...