ISO/TC 43/SC 1
| Projekta Nr. | ISO 13472-1:2022 |
|---|---|
| Nosaukums | <p>This document describes a test method for measuring in situ the sound absorption coefficient of road surfaces as a function of frequency in the range from 250 Hz to 4 kHz.</p> <p>Normal incidence is assumed. However, the test method can be applied at oblique incidence although with some limitations (see Annex F). The test method is intended for the following applications:</p> <p>— determination of the sound absorption properties of road surfaces in actual use;</p> <p>— comparison of sound absorption design specifications of road surfaces with actual performance data of the surface after completion of the construction work.</p> <p>The complex reflection factor can also be determined by this method.</p> |
| Reģistrācijas numurs (WIID) | 77032 |
| Darbības sfēra | <p>This document describes a test method for measuring in situ the sound absorption coefficient of road surfaces as a function of frequency in the range from 250 Hz to 4 kHz.</p> <p>Normal incidence is assumed. However, the test method can be applied at oblique incidence although with some limitations (see Annex F). The test method is intended for the following applications:</p> <p>— determination of the sound absorption properties of road surfaces in actual use;</p> <p>— comparison of sound absorption design specifications of road surfaces with actual performance data of the surface after completion of the construction work.</p> <p>The complex reflection factor can also be determined by this method.</p> |
| Statuss | Standarts spēkā |
| ICS grupa | 17.140.30 93.080.20 |