Document ID: chunk:federal_register_of_legislation:F2005L03990:reg:60:p4
Version: federal_register_of_legislation:F2005L03990
Segment Type: reg
Provision Reference: reg 60 (pt 4/9)
Character Range: 77325–79724

equal sections by means of two horizontal slots.
 These slots shall be cut through the entire depth of the bumper section and extend the whole width of the bumper. The slots shall be cut using a saw; their width shall be the width of the blade used and shall not exceed 4.0 mm.
4.4.  Clearance holes for mounting the barrier are to be drilled in the mounting flanges (shown in Figure 5).
        The holes shall be of 9.5 mm diameter. Five holes shall be drilled in the top flange at a distance of 40 mm from the top edge of the flange and five in the bottom flange, 40 mm from the bottom edge of that flange. The holes shall be at 100 mm, 300 mm, 500 mm, 700 mm, 900 mm from either edge of the barrier distances. All holes shall be drilled to  1 mm of the nominal
5.  MOUNTING
5.1.  The deformable barrier shall be rigidly fixed to the edge of a mass of not less than 7 x 104 kg or to some structure attached thereto.
        The attachment of the barrier face shall be such that the vehicles shall not contact any part of the structure more than 75 mm from the top surface of the barrier (excluding the upper flange) during any stage of the impact[2/].  The front face of the surface to which the deformable barrier is attached shall be flat and continuous over the height and width of the face and shall be vertical  1° and perpendicular  1° to the axis of the run-up track. The attachment surface shall not be displaced by more than 10 mm during the test. If necessary, additional anchorage or arresting devices shall be used to prevent displacement of the concrete block. The edge of the deformable barrier shall be aligned with the edge of the concrete block appropriate for the side of the vehicle to be tested.
5.2.  The deformable barrier shall be fixed to the concrete block by means of ten bolts, five in the top mounting flange and five in the bottom.
 These bolts shall be of at least 8 mm diameter. Steel clamping strips shall be used for both the top and bottom mounting flanges (see Figures 1 and 5). These strips shall be 60 mm high and 1000 mm wide and have a thickness of at least 3 mm. Five clearance holes of 9.5 mm diameter shall be drilled in both strips to correspond with those in the mounting flange on the barrier (see paragraph 4). None of the fixtures shall fail in the impact test.

Figure 1
Deformable barrier for frontal impact testing
Barrier width = 1000 mm.
All