B352-M1980

1. Scope 1.1 This Standard covers the performance, testing, and design of Rollover Protective Structures (ROPS) for certain types of self-propelled machines for agricultural, construction, earthmoving, forestry, industrial, and mining operations, as listed in Clause 1.2, 1.3, and 1.4. 1.2 This Standard covers the performance requirements, based on destructive testing, for ROPS on industrial tractors, motor graders, prime movers, skidders, tracked loaders, wheeled dozers, and wheeled loaders with machine mass greater than 700 kg and for ROPS on compactors and rollers with machine mass greater than 2700 kg. (See Clause 4.) 1.3 This Standard covers the performance requirements, based on destructive testing, for ROPS on wheeled agricultural tractors with engine power greater than 15 kW. (See Clause 5.) 1.4 This Standard covers the analytical design of ROPS for those machines listed in Clauses 1.2 and 1.3. The design procedure presented in Clause 6 shall apply primarily to the design of ROPS for one-of-a-kind machines and shall be used only when it is not possible or practicable to obtain ROPS tested according to the requirements set forth in Clauses 4 and 5. 1.5 Limitation Although ROPS meeting the performance requirements of this Standard may not provide crush protection under all circumstances of machine overturn, it is expected that protection will be assured under at least the following conditions: (a) A 360° roll about the machine's longitudinal axis on a hard clay surface of 30° maximum slope, without losing contact with the slope, at forward speeds up to 16 km/h; (b) In addition, for agricultural tractors, industrial tractors, tracked dozers, and tracked loaders, a 180° rear overturn on a hard clay surface, without losing contact with the surface.