Document ID: chunk:federal_register_of_legislation:F2005L03992:body:0:p20
Version: federal_register_of_legislation:F2005L03992
Segment Type: other
Provision Reference: 
Character Range: 51176–53822

at 35  2 km/h.
    2.3.8. The dissipated energy [1/ ] against parts 1 and 3 during the test shall be equal to 10  2 kJ for each of these parts.
    2.3.9. The dissipated energy against parts 5 and 6 shall be equal to 3.5  1 kJ for each of these parts.
    2.3.10. The dissipated energy against part 4 shall be equal to 4 ± 1 kJ.
    2.3.11. The dissipated energy against part 2 shall be equal to 14 ± 2 kJ.
    2.3.12. The total dissipated energy during the impact shall be equal to 45 ± 5 kJ.
    2.3.13. Impactor deformation measured after the test level B (figure 1) shall be equal to 330 ± 20 mm.

    Figure 1

    Design of the mobile deformable barrier impactor

    Figure 2
    Force-deflection curves

    Note: During the verification test, the loads measured on parts 1 and 3 and on parts 5 and 6 respectively shall not differ by more than 10 per cent for a given deflection
    Annex 5 - Appendix

    EXAMINATION OF THE MOBILE DEFORMABLE BARRIER

    1. SCOPE
     This appendix contains a prescription for the examination of the mobile deformable barrier.  The test authority is responsible for the mobile deformable barrier meeting the specifications using a test against a dynamometric wall supported by a fixed rigid barrier.

    2. INSTALLATION
    2.1. Testing ground
     The test area shall be large enough to accommodate the run-up track of the mobile deformable barrier, the rigid barrier and the technical equipment necessary for the test.  The last part of the track, for at least 5 m before the rigid barrier, shall be horizontal, flat and smooth.
    2.2. Fixed rigid barrier and dynamometric wall
    2.2.1. The rigid barrier shall consist of a block of reinforced concrete not less than 3 m wide in front and not less than 1.5 m high.  The thickness of the rigid barrier shall be such that it weighs at least 70 tonnes.  The front face shall be vertical, perpendicular to the axis of the run-up track and covered with load cells capable of measuring the total load on each part of the mobile deformable barrier impactor at the moment of impact.  The impact plate area centres shall align with those of the chosen mobile deformable barrier; their edges shall clear adjacent areas by 20 mm.  Cell mounting and plate surfaces shall be in accordance with the requirements set out in the annex to ISO 6487:1987.  In cases where surface protection is added, it shall not degrade the transducer responses.
    2.2.2. The rigid barrier shall be either anchored in the ground or placed on the ground with, if necessary, additional arresting devices to limit its displacement.  A rigid barrier with load cells having