Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p38
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 38/43)
Character Range: 247248–250466

shall be considered to be applicable to all rigid plastic double glazed units having the same characteristics and a nominal width of gap e ± 5 mm.

               The applicant for approval may alternatively submit the sample having the largest and smallest nominal gaps.

              3. Flexibility test

              3.1. Indices of difficulty of the secondary characteristics

               No secondary characteristic is involved.

              3.2. Number of test pieces

               One test piece for each component sheet of the window measuring
              300 mm x 25 mm shall be subjected to testing.

              3.3. Test method

              3.3.1. The method used shall be that described in Annex 3, paragraph 12.

              3.4. Interpretation of results

               The vertical deviation of both component sheets shall be less than 50 mm after 60 seconds.

              4. Headform test

              4.1. Indices of difficulty of the secondary characteristics

               No secondary characteristic is involved.

              4.2. Number of test pieces

               Six representative windows of size 1,170 mm x 570 mm (+0/-2 mm in both directions) shall be subjected to testing. The test pieces will have provision for peripheral clamping.

              4.3. Test method

              4.3.1. The test method used shall be that described in Annex 3, paragraph 3.2. Impact will be on the inner side of the window.

              4.3.2. For glazing like partitions and separating windows which have high impact probability the drop height shall be 3 m.

               The HIC value is also to be measured.

              4.3.3. For glazing like side windows, back windows and sunroofs which have reduced impact possibilities the drop height shall be 1.5 m.

               The HIC value is also to be measured.

              4.3.4. For glazing which do not have contact possibilities such as windows in trailer caravans as well as for small windows there will be no headform testing. A small window is a window into which a 150 mm diameter circle cannot be scribed.

              4.4. Interpretation of results

               The test shall be deemed to have given a satisfactory result if the following conditions are fulfilled:

              4.4.1. The test piece is not penetrated nor shall it break into fully separate large pieces.

              4.4.2. The HIC value is less than 1,000.

              4.4.3. A set of test pieces submitted for approval shall be considered satisfactory from the point of view of the headform test if one of the following conditions is met:

              4.4.3.1. All the tests give satisfactory results, or

              4.4.3.2. One test having given an unsatisfactory result, a further series of tests carried out on a new set of test pieces gives satisfactory results.

              5. Mechanical strength test 227 g ball test

              5.1. Indices of difficulty of the secondary characteristics:

               No secondary characteristic is involved.

              5.2. Number of test pieces

               Ten flat test pieces of the outer component sheet or ten finished parts of size
              300 mm