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Document Designation and Title Year Select Item(s) E492 Standard Test Method for Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the Tapping Machine 04 E492 Standard Test Method for Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the Tapping Machine 90(1996)e1 E492 Standard Method of Laboratory Measurement Of Impact Sound Transmission Through Floor-Ceiling Assemblies Using The Tapping Machine 77