Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p22
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 22/43)
Character Range: 202442–205033

prescribed in Annex 6 for ordinary laminated-glass windscreens,
3.2. The fragmentation test described in paragraph 4. below.
4. Fragmentation test
4.1. Indices of difficulty of the secondary characteristics
Material     Index of difficulty
Plate glass  2
Float glass  1
Sheet glass  1

4.2. Number of test pieces or samples
 One test piece measuring (1,100 mm x 500 mm)           mm or one sample for each point of impact shall be subjected to testing.
4.3. Test method
 The method used shall be that described in Annex 3, paragraph 1.
4.4. Impact point or points
 The glass pane shall be struck on each of the outer treated sheets in the centre of the test piece or sample.
4.5. Interpretation of results
4.5.1. For each point of impact the fragmentation test shall be considered to have given a satisfactory result if the total surface area of fragments having a surface area of more than 2 cm2 comprised in a rectangle as defined in Annex 4, paragraph 2.3.2., represents not less than 15 per cent of the surface of that rectangle.
4.5.1.1. In the case of a sample:
4.5.1.1.1. For vehicles of category M1, the centre of the rectangle shall be situated within a circle having a radius of 10 cm centred on the projection of the middle of segment V1 V2.
4.5.1.1.2. For vehicles of categories M and N other than M1, the centre of the rectangle shall be situated within a circle having a radius of 10 cm centred on the projection of point 0.
4.5.1.1.3. For agricultural and forestry tractors and for construction-site vehicles, the position of the visibility zone shall be indicated in the test report.
4.5.1.1.4. The height of the above rectangle may be reduced to 15 cm for windscreens which are less than 44 cm high or whose angle of installation is less than 15° from the vertical; the percentage of visibility shall at least be equal to 10 per cent of the area of the corresponding rectangle.
4.5.1.2. In the case of a test piece, the centre of the rectangle shall be situated on the greater axis of the test piece at 450 mm from one of its edges.
4.5.2. The test piece(s) or finished part(s) submitted for approval shall be considered satisfactory from the point of view of fragmentation if either of the following conditions is met:
4.5.2.1. The test gives a satisfactory result for each point of impact, or
4.5.2.2. The test having been repeated on a new set of four test pieces for each point of impact for which it had originally given an unsatisfactory result, the four new tests, performed at the same impact points all give a satisfactory result.

Annex 9
  Safety glazing faced