Título | Interlaboratory and proficiency tests for building’s sound insulation field measurements in Brazil – 4th Edition 2020
Resumo | Since 2013 Brazil has implemented the ABNT NBR 15575:2013, a national technical standard that establishes acoustic requirements for dwellings that can be verified by means of field measurements procedures performed according to specific ISO standards. These demands have fostered the acoustic field measurement market, and the number of field measurements acoustic laboratories has quickly increased around the country. ProAcústica – Brazilian Association for Acoustical Quality, a non-profit entity, aiming to improve the quality of the acoustics sector in Brazil has organized in 2020 the fourth edition of the “Interlaboratory and proficiency program of field measurements for building acoustics laboratories – INTERLAB Program”. This consists of a fundamental tool for acoustic field laboratories to evaluate and verify the quality of their measurement results. In the 2020 edition a total number of 25 laboratories participated (32% more participants than last edition in 2017) for different types of tests: airborne sound insulation, airborne facade sound insulation, impact sound level, sound pressure level from service equipment in
buildings, and reverberation time). The main objectives were the evaluation of the precision of the field test methods in the Brazilian market, the analysis of the performance of the participating laboratories as a quality control tool. This paper presents the methodologies, procedures and results of the ProAcustica’s interlaboratory and proficiency program 2020, carried out in São Paulo (Brazil), as well a comparison between the three last editions results.
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