Testing was performed per ANSI/BIFMA X5.1-2017, Section 11.
Type I Tilt the chair to its approximate tilt stop (most rearward position). Pull back on the backrest until it reaches its full-tilt position, then load the chair with the remaining 11 disks (for a total of 13 disks)
See Photos for set up.
Force to Transfer Weight to Rear Legs
The chair not tip over.