Field evaluation of airborne noise of a classroom on university campus

Abstract

The thinking about acoustic performance in buildings is considerably new in the field of civil construction especially in Brazil, where standard performance requirements are applied only to residential buildings through the ABNT NBR 15575:2013, also known as Brazilian Performance Standard, while in several countries there is a specific minimum requirement for other typologies. In this paper, some case studies are presented in school buildings, where researches are performed with both field measurements and qualitative evaluations. It is worth mentioning that the teaching-learning process requires the listening and understanding of the speech in the whole environment, allowing the good interlocution between teachers and students. The purpose of this paper is to evaluate the airborne noise insulation of a classroom of a higher education institution. The main objective was to evaluate a classroom of the university campus located in the state of RS, which has 114.24 m². The investigation of the research was through field verification of airborne noise insulation, with tests according to procedures of ISO 16283-1:2014 for internal walls and ISO 16283-3:2016 for tests on external walls (façades). The results presented below performance when compared to international references specific to the school environment and considering the requirements established in NBR 15575-4. Therefore, the construction system would not meet the minimum level of performance.

Keywords

• Desempenho acústico
• Edificações escolares
• Isolamento ao ruído aéreo.