Comparison among methods to measure the sound insulation of building façade

• U. Berardi ^[1]
  1. [1] Politecnico di Bari

     Politecnico di Bari

     Bari, Italia

     
• Localización: Tecniacústica 2011: publicación oficial del congreso : 42 Congreso Español de Acústica ; Encuentro Ibérico de Acústica ; EAA European Symposium on Environmental Acoustics and on Buildings Acoustically Sustainable : Cáceres, 26-28 Octubre 2011, 2011, ISBN 978-84-87985-20-1
• Idioma: inglés
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• Resumen

  • The increasing attention for building insulation regulations asks for reliable protocols of measure. The need to review available procedures is leading to the revision of the standards ISO 140 which will be replaced by the standards ISO 16283. This paper aims to contribute to this revision process by comparing measurement methods for the sound insulation of building façades through an investigation of limits of measurement systems. The paper compares the standards ISO 140-5, the American ASTM E 966 and the Japanese JIS A 1430. Among others aspects, their suggested frequency intervals are compared together with differences evaluating from 100 Hz to 3.15 kHz (as proposed in the ISO 140-5) or in other frequency ranges. Moreover, the limits of the measurements at low frequencies are investigated as the ISO 16283 would like to extend the measurement to one-third octave bands with the centre frequencies at 50, 63 and 80 Hz. The measurement procedures of the SPL at such a low frequency are analyzed both inside and outside the building. Finally, limits of sound insulation measurements for irregular or unconventional rooms are considered.