ASTM E1007: Standard Test Method for Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures

Standard: ASTM E1007 – Standard Test Method for Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures

Certification Required: Field acoustical certification is currently not required by most building codes, however the AIIC rating is required by the IBC and IRC codes for demising walls and floor-ceiling assemblies in multi-family dwellings. Field impact sound transmission measurements may be necessary in certain types of buildings to meet the requirements in ANSI/ASHRAE/ICC/USGBC/IES Standard 189.1, LEED, ANSI/ASA S12.60 Guidelines for Schools, FGI Guidelines for Healthcare Facilities, and the International Green Construction Code.

Scope: This test method covers the field measurement of impact sound transmission through floor-ceiling assemblies in buildings. The data obtained from this test is used to calculate the impact sound rating (ISR), the normalized impact sound rating (NISR) and apparent impact isolation class (AIIC) rating in accordance with ASTM E989.

Applicable Products: Floor-ceiling systems in buildings

Test Procedure: Testing is typically performed on two adjacent rooms, one directly above the other but there may be occasions where the receiving is not located directly below the tapping machine. The tapping machine is operated in four different locations on the floor (as specified in the standard) while the sound pressure levels are measured at four microphone locations in the room below (receiving room). The sound absorption and the background sound levels are also measured in the receiving room. The tapping machine sound pressure levels measured in the receiving room used to obtain the impact sound pressure levels (ISPL). The tapping machine sound pressure levels and the reverberation time (normalized to 0.5 seconds) in the receiving room are used to calculate the reverberation time normalized impact sound pressure levels (RTNISPL). The tapping machine sound pressure levels and the sound absorption measured in the receiving room are used to calculate the absorption normalized impact sound pressure levels (ANISPL).

End Result: The test report will include the impact sound pressure level (ISPL), reverberation time normalized impact sound pressure level (RTNISPL) and/or absorption normalized impact sound pressure level (ANISPL) values from 100 to 3150 Hertz, and the corresponding the impact sound rating (ISR), the normalized impact sound rating (NISR) and/or apparent impact isolation class (AIIC) ratings respectively.

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