Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p14
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 14/43)
Character Range: 181938–184617

sides.
2.2.1.2. In the case of flat and curved glass panes, three sets of samples shall be provided, corresponding to:
2.2.1.2.1. The largest developed area,
2.2.1.2.2. The smallest angle between two adjacent sides,
2.2.1.2.3. The largest height of segment.
2.2.2. Tests carried out on test pieces corresponding to the largest area 'S' shall be considered to be applicable to any other area smaller than S + 5 per cent.
2.2.3. If the samples submitted present an angle  smaller than 30°, the tests shall be considered as applicable to all glass panes produced having an angle greater than  - 5°.
 If the samples submitted present an angle  greater than or equal to 30°, the tests shall be considered as applicable to all glass panes produced having an angle equal to or greater than 30°.
2.2.4. If the height of segment h of the samples submitted is greater than 100 mm, the tests shall be considered as applicable to all glass panes produced having a height of segment smaller than h + 30 mm.
 If the height of segment of the samples submitted is less than or equal to 100 mm, the tests shall be considered as applicable to all glass panes having a height of segment less than or equal to 100 mm.
2.3. Number of test pieces per set
 The number of test pieces in each group shall be as follows, according to the shape category defined in paragraph 1.1.3. above:
 Kind of glass pane                             Number of test pieces
 Flat                                           4
 Curved (minimum radius of curvature  200 mm)  4
 Curved (minimum radius of curvature < 200 mm)  8

2.4. Test method
2.4.1. The method used shall be that described in Annex 3, paragraph 1.
2.5. Points of impact (see Annex 17, Figure 3)
              2.5.1.  For flat glass panes and curved glass panes the points of impact represented respectively in Annex 17, Figures 3(a) and 3(b) on the one hand, and in Annex 17, Figure 3(c) on the other hand, shall be as follows:

                Point 1: In the geometric centre of the glass.

  Point 2: For curved glass panes having a minimum radius of curvature "r" of less than 200 mm. The point shall be selected on the largest median in that part of the pane where the radius of curvature is smallest.
              2.5.2. Four test pieces shall be tested from each point of impact.

              2.6. Interpretation of results

              2.6.1. A test shall be deemed to have given a satisfactory result if fragmentation satisfies the following conditions:

              2.6.1.1. The number of fragments in any 5 cm x 5 cm square is not less than 40.

              2.6.1.2. For the purposes of the above rule, a fragment extending across