An Example of Sound Insulation Analysis in Building Elements with Different Materials on the Interior Surface

Abstract

The aim of this study was to examine and assess the performance of structural elements against applicable standards and to evaluate their implementation and condition with different internal surface materials. Moreover, the compliance status with the “Regulation on the Protection of Buildings against Noise” was evaluated. Building elements in the lecture halls of the education building, were acoustically measured against established standards and the sound transmission loss values of the walls were calculated. The values obtained before the improvement: for the inner wall-1: Rw value 31 (0; -1) - DnT value 30 (0; -1); for the inner wall-2: Rw value 40 (-1; -3) - DnT value 40 (-1; -3). After the improvement: for the inner wall-1: Rw value 31 (0; 0) - DnT value 30 (0; -1); for the inner wall-2: Rw value 39 (-1; -3) - DnT value 39 (-1; -3). These fall below the required limit values. For the inner walls -1 and -2, it was also determined that the sound transmission loss values were below the limit values before and after the implementation. Solution suggestions include increasing material thickness or using materials with complete laboratory tests.

Keywords: Acoustic, silk (live) plaster, building material, building elements.

DOI: 10.7176/JSTR/6-04-11