All Hyway ramps are rated for ‘an axle load across the pair’. The axle load equivalent is regarded as the simplest and most definite way of stating the load rating on a pair of ramps. An excavator or tracked machine distributes its weight along the length of the track. Therefore, it cannot apply it’s full weight at any point across the ramps (unless it’s standing on its end, which does not happen). Likewise, a wheeled machine would distribute its weight evenly across it’s two axles. The rated capacity must exceed the heaviest axle or concentration of load.