Protection to railway traffic noise in the case of a multilevel residential building from the city of Cluj-Napoca

The paper describes how was measured the noise level at the façade of a multilevel residential building from the city of Cluj-Napoca, Romania. The building has two sides parallel to the railway situated at a distance of about 20 m from it. Because of the small distance the noise level produced by the trains is much over the admitted limit at the building's façade and therefore it was necessary to design a noise protection barrier between the building and the double railway to fully meet the fundamental requirement applicable to constructions “insulation to noise”. The aim of the acoustic design presented in the paper was to ensure that the noise level measured at 2 m from the building façade respect the noise design standards from Romania, which are in full agreement with the European norms.