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Abstract

This paper describes the results of the European Inter-Laboratory Test (ILT) program, conducted for the determination of repeatability and reproducibility values for the laboratory measurements of airborne sound insulation of walls. A total of 24 laboratories took part in this ILT, 21 belonging to the European Community. Two test structures were constructed; a double lightweight wall and a single lightweight wall, both built of plasterboard. The sound reduction index values were measured. The main result of the ILT was the significant difference obtained for the reproducibility value, R, for the double lightweight wall with values up to 12 dB at middle-high-frequencies. On the contrary, the reproducibility value for the single wall was very similar to the tentative values indicated in Annex A of ISO 140–2. Good agreement between laboratories was found for both structures in the computed repeatability values, r.

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References

Goydke

, New International Standards for Buildings and Room Acoustics. Applied Acoustics, 52, (1997) 185–196.

EN ISO 140–3 (1995), “Measurement of sound insulation in buildings and of building elements – Part 3: Laboratory measurements of airborne sound insulation of building elements”.

ISO/DIS 140–1 (1994), “Measurement of sound insulation in buildings and of building elements – Part 1: Requirements for laboratory test facilities with suppressed flanking transmission”.

ISO 140–2 (1991), “Measurement of sound insulation in buildings and of building elements – Part 2: Determination, verification and application of precision data”, UNI EN 20140–2 (1994).

ISO 5725 (1986), “Precision of test methods – Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests”.

Pompoli

, Intercomparison of Laboratory Measurements of Airborne Sound Insulation of Walls. Final Report. EC Measurements and Testing Programme 1990–1994, Contract n. MAT1-CT-940054.

ISO/DIS 717-1/2 (1994), “Rating of sound insulation in buildings and of buildings elements. Part 1: Airborne sound insulation in buildings and of interior building elements. Part 2: Impact sound insulation”.

An Intercomparison of Laboratory Measurements of Airborne Sound Insulation of Lightweight Plasterboard Walls

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