Document ID: chunk:federal_register_of_legislation:F2012C00535:front:0:p6
Version: federal_register_of_legislation:F2012C00535
Segment Type: other
Provision Reference: 
Character Range: 17436–20438

of the superstructure.

       2.21. "Tilting bench" means a technical device, an arrangement of tilting platform, ditch and concrete ground surface, used in the rollover testing of a complete vehicle or body sections.
       2.22. "Tilting platform" means a rigid plane which can be rotated around a horizontal axis in order to tilt a complete vehicle or body section.

       2.23. "Body work" means the complete structure of the vehicle in running order, including all the structural elements which form the passenger compartment(s), driver's compartment, baggage compartment and spaces for the mechanical units and components.

       2.24. "Superstructure" means the load-bearing components of the bodywork as defined by the manufacturer, containing those coherent parts and elements which contribute to the strength and energy absorbing capability of the bodywork, and preserve the residual space in the rollover test.

       2.25 "Bay" means a structural section of the superstructure forming a closed loop between two planes which are perpendicular to the vertical longitudinal central plane of the vehicle.
       A bay contains one window (or door) pillar on each side of the vehicle as well as side wall elements, a section of the roof structure and a section of the floor and underfloor structure.

       2.26. "Body section" means a structural unit, which represents one part of the superstructure for the purposes of an approval test.  A body section contains at least two bays connected by representative connecting elements (side, roof, and underfloor, structures).

       2.27. "Original body section" means a body section composed of two or more bays of exactly the same form and relative position, as they appear in the actual vehicle.  All connecting elements between the bays are also arranged exactly as they appear in the actual vehicle.

       2.28. "Artificial body section" means a body section built up from two or more bays but not in the same position, nor at the same distance from each other as in the actual vehicle.  The connecting elements between these bays need not be identical with the real body work structure but shall be structurally equivalent.

       2.29. "Rigid part" means a structural part or element which does not have significant deformation and energy absorption during the rollover test.

       2.30. "Plastic zone" (PZ) means a special geometrically limited part of the superstructure in which, as the result of dynamic, impact forces:
          - large scale plastic deformations are concentrated
          - essential distortion of the original shape (cross section, length, or other geometry) occurs
          - loss of stability occurs, as a result of local buckling,
          - kinetic energy is absorbed due to deformation.

       2.31. "Plastic hinge" (PH) means a simple plastic zone formed on a rod-like element (single tube, window column, etc).

       2.32. "Cantrail" means the longitudinal structural part of the bodywork above