Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p42
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 42/43)
Character Range: 258646–261576

the burning rate is less than 110 mm/min.

              8.2.1. For the purpose of approval a set of samples will be considered satisfactory if one of the following conditions is met:

              8.2.1.1. All samples give a satisfactory result.

              8.2.1.2. One sample having given an unsatisfactory result a second set of samples gives satisfactory results.

              9. Resistance to chemicals

              9.1. Indices of difficulty and test method

               The requirements of Annex 3, paragraph 11., shall apply.

               Testing will only be applied to samples representative of the outer face of the double glazed unit.

              9.2. Interpretation of results

               A set of samples shall be considered acceptable if one of the following conditions is met:

              9.2.1. All samples give satisfactory results.

              9.2.2. One sample having given an unsatisfactory result, a second set of samples gives satisfactory results.

Annex 17
  Measurement of the height of segment and position of the points of impact

Figure 1

Determination of the height of segment 'h'

               In the case of a safety glazing pane having a simple curvature, the height of segment will be equal to: h1 maximum.

               In the case of a safety glazing pane having a double curvature, the height of segment will be equal to: h1 maximum + h2 maximum.

Figure 2

Prescribed points of impact for windscreens

Figure 3

Prescribed points of impact for uniformly toughened glass panes

       The points shown in Figures 3(a), 3(b), and 3 (c) are examples of the sites for the points of impact prescribed in Annex 5, paragraph 2.5.

Annex 18
  Procedure for determining test areas on windscreens of vehicles in relation to the "V" points
              1. Position of the "V" points

              1.1. The position of the "V" points in relation to the "R" point (see Annex 19 to this Regulation), as indicated by the X, Y and Z co-ordinates in the three-dimensional reference system, are shown in Tables 1 and 2.

              1.2. Table 1 gives the basic co-ordinates for a design seat-back angle of 25°. The positive direction of the co-ordinates is shown in this annex, Figure 3.

  Table 1
'V' Point  a      b      c (d)
V1         68 mm  -5 mm  665 mm
V2         68 mm  -5 mm  589 mm

1.3. Correction for design seat-back angles other than 25°
              1.3.1. Table 2 shows the further corrections to be made to the X and Z co-ordinates of each "V" point when the design seat-back angle is not 25°. The positive direction of the co-ordinates is shown in this annex, Figure 3.

Table 2

                 Horizontal    Vertical                       Horizontal    Vertical
Seat-back angle  co-ordinates  co-ordinates  Seat-back angle  co-ordinates  co-ordinates
(in °)           X             Z             (in °)           X             Z