Document ID: chunk:federal_register_of_legislation:F2024L01742:body:0:p18
Version: federal_register_of_legislation:F2024L01742
Segment Type: other
Provision Reference: 
Character Range: 53859–56759

have a 'Seat' installed within strikable distance behind them (as determined by clause 1 of Appendix 2) the loads as per clauses 2.4 and 2.6 of this Appendix; and

             3.                         For rearward facing 'Seats' the loads as per clause 2.6.2 of this Appendix only needs to be applied.

     2.                                     'Seat' Back Loads - Test Apparatus

         1.                               The test apparatus consists of cylindrical surfaces with a radius of curvature equal to 82 + 3 mm and a width:

2.2.2.1 at least equal to the width of the 'Seat' back of each seating position of the 'Seat' to be tested for the upper form; and

2.2.2.2  be from 320 to 330 mm for the lower form as shown in Figure 3; and

2.2.2.3   The surface resting against the parts of the 'Seat' must be made of a material the hardness of which is not less than 80 Shore A; and

2.2.2.4  Each cylindrical surface must be equipped with at least one force transducer able to measure the forces applied in the direction defined in clause 2.3 of this Appendix.

 1.                                     'Seat' Back Loads - Test Procedure

     1.                               A test force of at least 1000/H1 N must be applied using a device, conforming to clause 2.2 of this Appendix, to the rear part of the 'Seat' corresponding to each seating position of the 'Seat'.

     2.                               The direction of application of the force must be situated in the vertical median plane of the seating position concerned, it must be horizontal and from the rear towards the front of the 'Seat'.

     3.                               This direction must be situated at the height H1 which must be between 0.7 metre and 0.8 metre above the reference plane.  The exact height must be determined by the manufacturer.

     4.                               A test force of at least 2000/H2 N must be applied to the rear part of the 'Seat' corresponding to each seating position of the 'Seat' in the same vertical plane and in the same direction at the height H2 which must be between 0.45 metre and 0.55 metre above the reference plane, with a device conforming to clause 2.2 of this Appendix.  The exact height must be determined by the manufacturer.

     5.                               The test forms must be maintained as far as possible in contact with the rear of the 'Seat' during the application of the forces specified in clauses 2.3.1, 2.3.4 and 2.4 of this Appendix.  They must be able to pivot in a horizontal plane.

     6.                               Where a 'Seat' consists of more than one seating position, the forces corresponding to each seating position must be applied simultaneously and there must be as many upper and lower forms as seating positions.

     7.                               The initial position of each seating position of