ASTM E989-18
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Standard Classification for Determination of Single-Number Metrics for Impact Noise
ASTM International , 11/01/2018
Pages: 3
1.1This 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.
1.2The name given to the rating is assigned by the test method that invokes this classification.
1.3This 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.
1.4Test methods that invoke this classification include:
1.4.1Test Method E492 – the single-number rating is called impact insulation class (IIC).
1.4.2Test Method E1007 – the single-number ratings are called apparent impact insulation class (AIIC), impact sound rating (ISR), and normalized impact sound rating (NISR).
1.4.3Test Method E2179 – the single-number rating is called the change in impact insulation class (ΔIIC).
1.5This 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.
1.6This 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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