Abstract: A reinforced storage container assembly, formed by connecting plural storage containers end-to-end, includes a first storage container, a second storage container, a connector, and at least one reinforcement structure. The storage containers each have an open end formed by removal of an end wall, and are oriented with the open ends facing toward one another, and attached at the open ends by a connector. Each reinforcement structure includes an inner reinforcement panel, used singularly, and an outer reinforcing member used in combination with a stiffening member, modified stiffening member or reinforcing channel. Each reinforcement structure reinforces at least one corresponding side wall or the floor of the storage container assembly.