Development of ROPS Criteria for Construction and Industrial Vehicles 710693
Performance standards for roll-over protective structures (ROPS) have been developed for four classes of equipment-TTT, loaders, motor graders, and wheel scraper prime movers. The criteria were developed by studying the behavior of roll-proven structures in a laboratory and converting these observations into numerical relationships.
The criteria establish five major requirements:
Resist horizontal force-related to machine weight.
Absorb energy-must deflect without catastrophic failure.
Withstand vertical load after deflection equal to machine weight.
Meet above requirements without entering critical zone.
Must perform at 0 F or material must exhibit Charpy “V” notch impact strength of 8 ft-lb at -20 F.