A collapsible storage silo having an expanded configuration includes: (a) a shell for circumscribing storage space and comprising a plurality of concentrically nested tubular members that are collapsible; (b) a lift system operable to slidably expand the plurality of concentrically nested tubular members to place the silo in its expanded configuration; and (c) a mast operable to support the lift system, The mast is pivotable between horizontal and vertical positions relative to a frame. A winch attaches to the mast and a cable extends between the winch and an outermost tubular member to expand the silo such that inwardly and outwardly projecting lips of nested members engage each other and a conical hopper engages an innermost tubular member. A flexible inner liner attaches between an outermost tubular member and the hopper. A collapsible roof has a flexible roof membrane and a plurality of radially extending foldable rib members.

A low profile holding tank capable of being evacuated to a pressure differential of at least about 10″ of mercury, the low profile holding tank including at least one support structure, an upper outer layer and a lower outer layer each constructed from mild steel that is no thicker than about ¼ inches and a peripheral wall, the upper outer layer, the lower outer layer and the peripheral wall cooperate to define a space, the at least one support structure is connected to the upper outer layer at an upper connection point and the at least one support structure is connected to the lower outer layer at a lower connection point, wherein at least one of the upper connection point and the lower connection point is made from outside of the space.

A low profile holding tank capable of being evacuated to a pressure differential of at least about 10″ of mercury, the low profile holding tank including at least one support structure, an upper outer layer and a lower outer layer each constructed from mild steel that is no thicker than about ¼ inches and a peripheral wall, the upper outer layer, the lower outer layer and the peripheral wall cooperate to define a space, the at least one support structure is connected to the upper outer layer at an upper connection point and the at least one support structure is connected to the lower outer layer at a lower connection point, wherein at least one of the upper connection point and the lower connection point is made from outside of the space.

A bulk fluid storage container has a top wall structure and a bottom wall structure held in spaced relation by a side wall structure. An internal baffle assembly is disposed in the fluid storage volume between the side wall structure for reducing fluid sloshing. A fill port formed in the top wall structure has a fill flange for coupling with a source of the fluid. A vent port formed in the top wall structure has a pressure vacuum value. A drain port formed in the side wall structure in a lower region adjacent the gutter region has a drain valve assembly is coupled to the drain port. A frame assembly includes an upper rectangular frame member and a lower rectangular frame member arranged in spaced relation by a plurality of post; wherein the frame assembly surrounds and supports the fluid storage vessel.

A bulk fluid storage container has a top wall structure and a bottom wall structure held in spaced relation by a side wall structure. An internal baffle assembly is disposed in the fluid storage volume between the side wall structure for reducing fluid sloshing. A fill port formed in the top wall structure has a fill flange for coupling with a source of the fluid. A vent port formed in the top wall structure has a pressure vacuum value. A drain port formed in the side wall structure in a lower region adjacent the gutter region has a drain valve assembly is coupled to the drain port. A frame assembly includes an upper rectangular frame member and a lower rectangular frame member arranged in spaced relation by a plurality of post; wherein the frame assembly surrounds and supports the fluid storage vessel.

A plastic roll-off container is disclosed, including a roll-off container comprising a front side and a rear side. The roll-off container is configured, via a first rail and a second rai positioned on a bottom side of the roll-off container, to be onloaded, offloaded, and transported by a roll-off truck or a hook lift roll-off truck. An integrally molded sidewall is connected to a bottom having a concave shape to facilitate the removal of a material from an interior of the roll-off container.

A plastic roll-off container is disclosed, including a roll-off container comprising a front side and a rear side. The roll-off container is configured, via a first rail and a second rai positioned on a bottom side of the roll-off container, to be onloaded, offloaded, and transported by a roll-off truck or a hook lift roll-off truck. An integrally molded sidewall is connected to a bottom having a concave shape to facilitate the removal of a material from an interior of the roll-off container.

A container skate of synthetic material facilitates movement of a container. A sliding body has two inclined ends facilitating sliding of the body in opposite directions with a container thereon without further damage to the container or support surface over which it is moved. The body has an upstanding plug extendable into a container corner fitting so pulling of the container draws the body with it, sliding over a surface while bearing container weight. The body further includes a stop member extending therefrom and spaced from said plug.

A quasi-cylindrical cargo container is formed of a plurality of rigid, curved panels together forming first and second semi-cylindrical shells, and a plurality of rigid, flat extension panels bridging the first and second semi-cylindrical shells. A method of manufacturing the container includes forming the first and second semi-cylindrical shell from the curved panels, forming the quasi-cylindrical shell from the first and second semi-cylindrical shells and the flat extension panels, forming collars conformably encompassing the quasi-cylindrical shell, constricting the collars to compress joints formed at abutting edges of pairs of adjacent panels, rolling the shell and collars sequentially to bring the joints to a lower position, welding inside seams of the joints when at the lower position, removing the collars, rolling the shell sequentially to bring the joints to an upper position, and welding outside seams of the joints when at the upper position.

A bulk material shipping container including a pallet, a compartment mounted on the pallet, a material unloading assembly, and a material loading assembly.