PD CEN/TS 16272-5:2014 PDF Download

The PD CEN/TS 16272-5:2014 standard is a test method used to measure the acoustic performance of sound reflection from railway noise barriers. It determines a quantity known as the reflection index, which represents the intrinsic characteristics of sound reflection. This test method can be applied in various situations, such as measuring reflection characteristics of noise barriers to be installed alongside railways, evaluating the in situ performance of noise barriers and claddings, comparing design specifications with actual performance data, and verifying the long-term performance of noise barriers.

The test method focuses on the frequency range between 100 Hz and 5 kHz and expresses the results in one-third octave bands. If it is not possible to obtain valid measurements across the entire frequency range, the results should be presented within a restricted frequency range, and the reasons for the restriction must be clearly reported. It should be noted that this test method is not suitable for measuring the intrinsic characteristics of sound reflection for noise reducing devices installed in reverberant conditions, such as inside tunnels or deep trenches.

The scope of the standard explicitly excludes other noise reducing devices, such as devices for attenuation of ground borne vibration and on-board devices. Its primary purpose is to provide a standardized approach for evaluating the acoustic performance of noise barriers and related devices acting on airborne sound propagation, specifically in the context of railway applications.