Twenty years ago (1990), the European Standardization Committee (CEN) started a working group about “noise reducing devices” (NRD) under the frame of the Technical Committee TC226 “Road Equipments”. About the acoustic performance standards, three have been harmonized since 1997; they are based on the ISO 354 and ISO 140 for measurements in laboratories; two TS (Technical Supports) were also published in 2003: they are defining in situ methods for measuring sound absorption and airborne sound insulation, but also allow to characterize sound diffraction. Today, the whole package of supporting standards is under complete revision: the actual progress of the corresponding supporting standards is presented. The non acoustic performance standards, dealing with products specifications, long term per-formances, and non-acoustic performances will also be briefly presented as they concern how to keep NRD performing correctly for many years.
Clairbois J.-P. , Garai M. (2010). EN 14388: European standard for road traffic noise reducing devices: state of the art as from August 2010. . : ..
EN 14388: European standard for road traffic noise reducing devices: state of the art as from August 2010
GARAI, MASSIMO
2010
Abstract
Twenty years ago (1990), the European Standardization Committee (CEN) started a working group about “noise reducing devices” (NRD) under the frame of the Technical Committee TC226 “Road Equipments”. About the acoustic performance standards, three have been harmonized since 1997; they are based on the ISO 354 and ISO 140 for measurements in laboratories; two TS (Technical Supports) were also published in 2003: they are defining in situ methods for measuring sound absorption and airborne sound insulation, but also allow to characterize sound diffraction. Today, the whole package of supporting standards is under complete revision: the actual progress of the corresponding supporting standards is presented. The non acoustic performance standards, dealing with products specifications, long term per-formances, and non-acoustic performances will also be briefly presented as they concern how to keep NRD performing correctly for many years.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
