so they bring the trailer back to the yard after the roll over and scale it... as a rear box of a set or hooked to a tractor or behind a wrecker? How was it determined on the scale it was 10,000 over the manifested weight? Now last I knew every roll over was stripped utilizing a claim manifest. Every skid and every pro number must be recorded and the condition also recorded. No mention of discrepancies within this process, only the scaled weight.
Root cause of a roll over is almost never load shift... not by Ann Arbor's determinations but that of the Federal Highway Safety. So once again it's all about the big bad company. So how about driving habits and the stability of the rear box? How far from center-point was the converter? 11 o-clock? 10 o-clock? 9 o-clock (90 degrees to the left)? Did the driver shift before the trailer returned to parallel with the other equipment? Was there a curb or pothole that "tripped" the inside rear axle during the turn? Where did the trailer land? While the set was still in the radius of the turn or closer to when the trailer could be considered back to center-point with the lead? He made it that far before that turn resulted in a roll over... what changed? Lateral transfer of energy causes a transfer of the center of gravity. Did the transfer of energy cause the trailer to be pulled over or pushed over? The center of gravity between the front right corner and the left rear corner of a rear box goes through critical changes when the converter pivots away from center-point in a left turn.
At the end of the day none of us know any more about the load then we do the driver's habits at the time of the crash.
and Jimmy's right, trailers don't just fall over. Once again they either get pulled over or pushed over.