Project Details

Client:
MILANO SERRAVALLE MILANO TANGENZIALI
Location:
Paderno Dugnano, Sesto S. Giovanni and Pavia - Lombardy
Project date:
2009
Sectors:
Related service:

Noise Mitigation Plan in accordance with D.M. of November 29, 2000 regarding Milan Western, Eastern and Northern Ring Roads near the municipalities of Paderno Dugnano, Sesto S. Giovanni and Pavia

PROJECT DESCRIPTION

The study focuses on the design of noise mitigation measures concerning areas “subject to noise reduction interventions” in the context of the related 2005 – 2007 management plan of Milano Serravalle – Milano Tangenziali S.p.A..

The design regarded the following areas:

  • City of Milan: two zones located along the Eastern Ring Road (A51);
  • Municipality of Opera: single area situated along Milan Western Ring Road (A50);
  • Municipality of Sesto San Giovanni: single area situated along the Northern Ring Road (A52);
  • Municipality of Paderno Dugnano: single area located along the Northern Ring Road (A52);
  • City of Pavia: three zones situated along the Western Ring Road (A54).

PROJECT CHARACTERISTICS

The final acoustic studies were arranged in field and post-processing activities.
Phonometric investigations were carried out in order to define the environmental characteristics of the areas surrounding the road infrastructures as well as potential different noise sources.

Acoustic analyses were conducted in compliance with regulations and took into consideration detailed and properly calibrated simulation models.
Several hypotheses regarding the distribution and height of the mitigation measures were considered both in the actual (2009) and medium term (2015) traffic scenario, whether with the presence of sound-absorbing asphalt or not.

The design of mitigation measures, able to guarantee the compliance with the normative limits concerning the external area of buildings located in the relevant acoustic zones (with the exception of two situated outside), was the primary aim of the study.
When this was not possible, the second objective focused on the compliance with the internal limits as required by law. As a precautionary measure, the sound insulation of the window frames was believed to be equal to 20 dB.
Subsequently, this hypothesis was confirmed by specific sound-level investigations.