Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p12
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 12/43)
Character Range: 176669–179519

they do not exceed 10 cm in length, except in the case provided for in paragraph 2.6.2.2. below.
2.6.1.3. Zone FIII
 Fragmentation in this zone shall have characteristics intermediate between those of the fragmentation respectively allowed for the two neighbouring zones (FI and FII).
2.6.2. A windscreen submitted for approval shall be considered satisfactory from the point of view of fragmentation if at least one of the following conditions is fulfilled:
2.6.2.1. When all the tests carried out using the points of impact defined in paragraph 2.5.1. above have given a satisfactory result;
2.6.2.2. When one test among all those carried out using the points of impact prescribed in paragraph 2.5.1. has given an unsatisfactory result, taking account of deviations which do not exceed the following limits:
                      Zone FI: not more than five fragments between 7.5 and 15 cm long,
                      Zone FII: not more than three fragments of between 16 and 20 cm2 in area located outside the circle having a radius of 10 cm centred on the point of impact,
                      Zone FIII: not more than four fragments between 10 and 17.5 cm long
and is repeated on a new sample, which either conforms to the requirements of paragraph 2.6.1. or presents deviations within the above specified limits.
2.6.2.3. When two tests among all the tests carried out using the points of impact prescribed in paragraph 2.5.1. have given an unsatisfactory result for deviations not exceeding the limits specified in paragraph 2.6.2.2., and a further series of tests carried out on a new set of samples conforms to the requirements of paragraph 2.6.1., or not more than two samples of the new set present deviations within the above specified limits of paragraph 2.6.2.2.
2.6.3. If the above-mentioned deviations are found, they shall be noted in the test report and permanent recording(s) of the fragmentation pattern of the relevant parts of the windscreen shall be attached to the report.
3. Headform test
3.1. Indices of difficulty of the secondary characteristics
 No secondary characteristic is involved.
3.2. Number of test pieces
3.2.1. For each group of toughened-glass windscreens, four test pieces having approximately the smallest developed area and four test pieces having approximately the largest developed area, all eight samples being of the same types as those selected for the fragmentation tests (see paragraph 2.2. above), shall be subjected to testing.
3.2.2. Alternatively, at the discretion of the laboratory conducting the tests, for each category of windscreen thickness, six test pieces of the dimension
(1,100 mm x 500 mm)           mm shall be subjected to testing.
3.3. Test method
3.3.1. The method used shall be that described in Annex 3, paragraph 3.1.
3.3.2. The height of drop shall be 1.5 m.         mm.
3.4.