CEN/TC 226
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 72916 | FprEN 1793-4 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - Intrinsic sound diffraction | Izstrādē |
| 72917 | FprEN 1793-3 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum | Izstrādē |
| 72918 | FprEN 1793-1 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics - Sound absorption under diffuse sound field conditions | Izstrādē |
| 72920 | FprEN 1793-6 | Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 6: Intrinsic characteristics - Airborne sound insulation under direct sound field conditions | Izstrādē |
| 72921 | EN 14389:2023 | Road traffic noise reducing devices - Procedures for assessing long term performance | Izstrādē |
| 72921 | LVS EN 14389:2023 | Road traffic noise reducing devices - Procedures for assessing long term performance | Standarts spēkā |
| 72922 | prEN 14389-2 rev | Road traffic noise reducing devices - Procedures for assessing long term performance - Part 2: Non-acoustical characteristics | Izstrādē |
| 72923 | LVS EN 1794-2:2024 | Road traffic noise reducing devices - Non-acoustic performance - Part 2: Methods of determination of the general safety and environmental characteristics | Standarts spēkā |
| 72923 | EN 1794-2:2024 | Road traffic noise reducing devices - Non-acoustic performance - Part 2: Methods of determination of the general safety and environmental characteristics | Standarts spēkā |
| 72924 | prEN 1794-3 rev | Road traffic noise reducing devices - Non-acoustic performance - Part 3: Reaction to fire - Burning behaviour of noise reducing devices and classification | Izstrādē |
Displaying 371-380 of 413 results.