Document ID: chunk:federal_register_of_legislation:F2023C00959:body:0:p16
Version: federal_register_of_legislation:F2023C00959
Segment Type: other
Provision Reference: 
Character Range: 48427–51715

sink shall drain into any toilet or urinal or into any tank into which a toilet or urinal empties.
25.5.                                Each toilet and/or urinal closet must vent directly to the atmosphere.

APPENDIX 1

Determination of the 'Static Stability Ratio' for category LE vehicles

        1. Definitions
            1.                            'Static Stability Ratio' is the ratio of the height (h) of the 'Centre of Mass (CoM)' (see Figure 5) and the horizontal distance (d) from the 'CoM' to the nearest roll axis (see Figures 6 and 7) at 'Maximum Loaded Test Mass'.
       Figure 5: Three-wheeled L-Group vehicle (side view)

       Figure 6: Category LEM1, LEP1 or LEG1 vehicle (plan view)

       Figure 7: Category LEM2, LEP2 or LEG2 vehicle (plan view)
       1.2.                           A 'roll axis' is a line joining the centre-point of each tyre's contact patch (see Figures 6 and 7).

       2.                                 Procedures for determining the transverse location and the longitudinal location (L) of the 'CoM'
       2.1.                           Unless otherwise 'Approved', the transverse location of the 'CoM' shall be taken to be located along the vehicle's longitudinal centreline.
       2.2.                           Unless otherwise 'Approved', the longitudinal location (L) of the 'CoM' from the centreline of the front 'Axle', must be determined according to the formula:
       Where:
          W is the 'Wheelbase'
          R is the rear 'Axle Load' on the tyre(s) at 'Maximum Loaded Test Mass'
          F is the front 'Axle Load' on the tyre(s) at 'Maximum Loaded Test Mass'

       3.                                 Procedures for determining the height (h) of the 'CoM'
       3.1.                           The height (h) of the 'CoM' must be determined according to either the Stable Pendulum Method (clause 3.2 below) or the Axle Lift Method (clause 3.3 below). The 'Manufacturer' may decide which method is used.
       3.2.                           Stable Pendulum Method
       3.2.1.                    For category LEM1, LEP1 and LEG1 vehicles:
          (a)      position the vehicle on a level surface;
          (b)      mark a horizontal 'reference line' parallel to the vehicle longitudinal centreline, passing through the centre of the rear 'Axle';
          (c)      chock both rear wheels;
          (d)      raise the front of the vehicle until the 'CoM' is directly over the rear 'Axle';
          (e)      measure the angle (θ) between the 'reference line' and the horizontal (see Figure 8); and
          (f)       determine the height (h) of the 'CoM' from the formula:
          Where:
          r is the rolling radius of the tyre(s) fitted to the rear wheel(s)
          W is the 'Wheelbase'
             L is the longitudinal location of the 'CoM' from the centreline of the front 'Axle'
          θ is the angle between the 'reference line' and the horizontal
       Figure 8: Stable Pendulum Method for a category LEM1, LEP1 or LEG1 vehicle
       3.2.2.                    For category LEM2, LEP2 and LEG2 vehicles:
          (a)      position the vehicle on a level surface;
          (b)      mark a horizontal 'reference line' parallel to the vehicle longitudinal centreline, passing through