Document ID: chunk:federal_register_of_legislation:F2025L00028:front:0:p27
Version: federal_register_of_legislation:F2025L00028
Segment Type: other
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Character Range: 76508–79537

according to the static test procedure described in paragraph 5. of this annex.

              2.1.4.2. The force-compression for each block tested shall lie within the force deflection corridors defined in Appendix 1. Static force-deflection corridors are defined for each block of the barrier.

              2.1.5. Dynamic test

              2.1.5.1. The dynamic deformation characteristics, when impacted according to the protocol described in paragraph 6. of this annex.

              2.1.5.2. Deviation from the limits of the force-deflection corridors characterising the rigidity of the impactor - as defined in Appendix 2 of this annex - may be allowed provided that:

              2.1.5.2.1. The deviation occurs after the beginning of the impact and before the deformation of the impactor is equal to 150 mm;

              2.1.5.2.2. The deviation does not exceed 50 per cent of the nearest instantaneous prescribed limit of the corridor;

              2.1.5.2.3. Each deflection corresponding to each deviation does not exceed 35 mm of deflection, and the sum of these deflections does not exceed 70 mm (see Appendix 2 to this annex);

              2.1.5.2.4. The sum of energy derived from deviating outside the corridor does not exceed 5 per cent of the gross energy for that block.

              2.1.5.3. Blocks 1 and 3 are identical. Their rigidity is such that their force deflection curves fall between corridors of Figure 2a.

              2.1.5.4. Blocks 5 and 6 are identical. Their rigidity is such that their force deflection curves fall between corridors of Figure 2d.

              2.1.5.5 The rigidity of block 2 is such that its force deflection curves fall between corridors of Figure 2b.

              2.1.5.6. The rigidity of block 4 is such that its force deflection curves fall between corridors of Figure 2c.

              2.1.5.7. The force-deflection of the impactor as a whole shall fall between corridors of Figure 2e.

              2.1.5.8. The force-deflection curves shall be verified by a test detailed in Annex 5, paragraph 6., consisting of an impact of the barrier against a dynamometric wall at 35 ± 0.5 km/h.

              2.1.5.9. The dissipated energy[7] against blocks 1 and 3 during the test shall be equal to 9.5 ± 2 kJ for these blocks.

              2.1.5.10. The dissipated energy against blocks 5 and 6 during the test shall be equal to
              3.5 ± 1 kJ for these blocks.

              2.1.5.11. The dissipated energy against block 4 shall be equal to 4  ± 1 kJ.

              2.1.5.12. The dissipated energy against block 2 shall be equal to 15 ± 2 kJ.

              2.1.5.13. The dissipated total energy during the impact shall be equal to 45 ± 3 kJ.

              2.1.5.14. The maximum impactor deformation from the point of first contact, calculated from integration of the accelerometers according to paragraph 6.6.3. of this annex, shall be equal to 330 ± 20 mm.

              2.1.5.15. The final residual static impactor deformation measured