MIL-S-62359 Semitrailer, Bottom Dump: 18 To 22 Cubic Yard Capacity, CommercialThis specification covers tandem axle, single and dual hopper, bottom dump semitrailers with minimum struck capacities of 18 to 22 cubic yards. Semitrailers procured under this specification are commercial items which shall be warranted by the manufacturer as specified in procurement documents.