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    ASTM E989-89(1999)

    Standard Classification for Determination of Impact Insulation Class (IIC)


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    1. Scope

    1.1 This classification covers the determination of a single-figure rating that can be used for comparing floor-ceiling assemblies for general building design purposes. The rating is called impact insulation class (IIC). This classification is applicable only to one-third octave band impact noise data obtained using the standard tapping machine described in Test Method E492. This rating may be used with data obtained in the laboratory or field.

    1.2 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    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

    E2179 Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in Reducing Impact Sound Transmission Through Concrete Floors


    ICS Code

    ICS Number Code 91.060.30 (Ceilings. Floors. Stairs); 91.120.20 (Acoustics in building. Sound insulation)

    UNSPSC Code

    UNSPSC Code 30141601(Acoustical insulation)


    Referencing This Standard
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    DOI: 10.1520/E0989-89R99

    Citation Format

    ASTM E989-89(1999), Standard Classification for Determination of Impact Insulation Class (IIC), ASTM International, West Conshohocken, PA, 1999, www.astm.org

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