Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p26
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 26/43)
Character Range: 212488–215461

the test pieces shall be in all respects rigorously representative of the glass panes for the production of which approval is sought.
2.2. Before each test, the test pieces of glass-plastics panes shall be stored for not less than four hours at a temperature of 23 °C ± 2 °C. The tests shall take place as soon as possible after the test pieces have been taken out of the receptacle in which they were stored.
2.3. The provisions of this annex shall be considered to be met if the glass pane submitted for approval has the same composition as that of a windscreen already approved under the provisions of Annex 10.
3. Mechanical strength test -227 g Ball Test
 The provisions of Annex 7, paragraph 3, shall apply.
4. Test of resistance to the environment
4.1 Test of resistance to abrasion
4.1.1. Test of resistance to abrasion on the outer face
 The requirements of Annex 7, paragraph 5.1., shall apply.
4.1.2. Test of resistance to abrasion on the inner face
 The requirements of Annex 9, paragraph 2.1., shall apply.
4.2. Test of resistance to high temperature
 The requirements of Annex 3, paragraph 5., shall apply.
4.3. Resistance-to-radiation test
 The requirements of Annex 3, paragraph 6.3., shall apply.
4.4. Resistance-to-humidity test
 The requirements of Annex 3, paragraph 7., shall apply.
4.5. Test of resistance to temperature changes
 The requirements of Annex 3, paragraph 8., shall apply.
5. Optical qualities
 The provisions concerning the regular light transmittance set out in Annex 3, paragraph 9.1., shall apply to glass glazing or parts of glass panes located at places which are essential to the driver's vision.
6. Fire-resistance test
 The requirements of Annex 3, paragraph 10., shall apply.
7. Test of resistance to chemicals
 The requirements of Annex 3, paragraph 11.2.1., shall apply.

Annex 12
  Multiple-glazed units
       1. Definition of type

               Multiple-glazed units shall be considered to belong to different types if they differ in at least one of the following principal or secondary characteristics.

              1.1. The principal characteristics are as follows:

              1.1.1. The trade names or marks,

              1.1.2. The number of component panes.

              1.1.3. The composition of the multiple-glazed unit (symmetrical, asymmetrical),

              1.1.4. The type of each component glass pane as defined in paragraph 1 of Annexes 5, 7 or 11 to this Regulation,

              1.1.5. The nominal width(s) of the gap(s) between the glass panes,

              1.1.6. The type of sealing.

              1.2. The secondary characteristics are:

              1.2.1. The secondary characteristics of each component glass pane, as defined in paragraph 1.2. of Annexes 5, 7 or 11 to this Regulation.

              2. General

              2.1. Each component glass pane forming the multiple-glazed unit shall either be type-approved or subjected to the requirements set out in the relevant