A large volume natural gas storage tank comprises rigid tubular walls having closed tubular cross-sections that are interconnected at opposing ends with two other rigid tubular walls such that interiors of the rigid tubular walls define an interior fluid storage chamber. The storage tank also includes bulkheads positioned in the interior fluid storage chamber across intermediate segments of the rigid tubular walls and closure plates connected between exterior surfaces of successive interconnected rigid tubular walls to define sides of the storage tank. Interior surfaces of the closure plates and exterior surfaces of the rigid tubular walls define an auxiliary fluid storage chamber. The storage tank also includes exterior support structures extending through the closure plates and between the exterior surfaces of the rigid tubular walls on some of the sides of the storage tank to reinforce the storage tank against dynamic loading from fluid in the interior fluid storage chamber.

A roll-off tub style container is disclosed with the container having a floor with a forward end, a rearward end, a first side, a second side, an upper side and a lower side. The container has a front wall, a first side wall, a second side wall and a tail gate. The upper side of the floor has a plurality of elongated and horizontally spaced-apart rail members which are welded to the upper side of the floor. The rail members extend between the forward and rearward ends of the floor. In the preferred embodiment, the rail members are angle members which have an inverted V-shaped configuration. Rail members having different cross-sectional configurations may possibly be utilized. The rail members prevent materials in the container from freezing to the floor of the container and also act as slide members when the material in the container is being dumped therefrom.

A roll-off tub style container is disclosed with the container having a floor with a forward end, a rearward end, a first side, a second side, an upper side and a lower side. The container has a front wall, a first side wall, a second side wall and a tail gate. The upper side of the floor has a plurality of elongated and horizontally spaced-apart rail members which are welded to the upper side of the floor. The rail members extend between the forward and rearward ends of the floor. In the preferred embodiment, the rail members are angle members which have an inverted V-shaped configuration. Rail members having different cross-sectional configurations may possibly be utilized. The rail members prevent materials in the container from freezing to the floor of the container and also act as slide members when the material in the container is being dumped therefrom.

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 detachable modular mobile autonomy module (MAM) for a modular autonomous bot apparatus includes a housing with latching points, an autonomous controller, location circuitry, external sensors monitoring an environment external to the MAM and providing sensor data to the controller, multi-element light panels on the housing driven by the controller; and a modular component power and data bus. The bus has a bottom side modular component electronics interface disposed on the housing that mates to a corresponding interface on another proximately-attached modular component of the bot. The MAM receives sensor data from the external sensors, receives outside sensor data from additional sensors disposed on a mobility unit of the bot, generates steering and propulsion control output signals based on location data from the location circuitry, external sensor data, mobility unit sensor data, and destination information data maintained by the controller, and generates transport and delivery information for the light panels.

A grease trap or solids collector for separating waste from waste water has a tank having a multilayer outer wall made of an outer layer of un-foamed plastic, an intermediate layer of foamed plastic, and an inner layer of unfoamed plastic; an inlet invert in the tank for receiving incoming waste water; and an outlet invert for removing water from the tank. An extension collar made up of segments can be included.

Insulated tile flooring may comprise an outer surface used to support temperature sensitive goods and machinery typically used to move such goods into a shipping container or other means of transport. The outer surface may comprise a shell and be composed of injection molded high density polyethylene (HDPE). A shell may define a plurality of void areas conducive to being filled via injection in a top to bottom manner to form an inner fill that may comprise CFC-free foamed-in-place or formed elsewhere, polyisocyanurate foam. A bottom most layer of a tile piece may comprise heavy gauge, reflective, double-sided, reinforced pure aluminum foil. Tiles may be manufactured via tile shells temporally attached and defining an inner void used for forming center insulation. The tile shells may then be separated with the inner foam cut to comport to each shell and foil placed over the exposed insulation.

Insulated tile flooring may comprise an outer surface used to support temperature sensitive goods and machinery typically used to move such goods into a shipping container or other means of transport. The outer surface may comprise a shell and be composed of injection molded high density polyethylene (HDPE). A shell may define a plurality of void areas conducive to being filled via injection in a top to bottom manner to form an inner fill that may comprise CFC-free foamed-in-place or formed elsewhere, polyisocyanurate foam. A bottom most layer of a tile piece may comprise heavy gauge, reflective, double-sided, reinforced pure aluminum foil. Tiles may be manufactured via tile shells temporally attached and defining an inner void used for forming center insulation. The tile shells may then be separated with the inner foam cut to comport to each shell and foil placed over the exposed insulation.

A functional training rig kit includes a box and a plurality of components adapted to fit within the box. At least some of the components and the box include elements by which the components are adapted to be attached to the outside of the box to provide at least one functional training rig attached to the outside of the box.

An example reinforced wood flooring for use in forming a truck trailer or container floor may include a wood member. The wood member may include a plurality of wood strips that are attached together. The wood member may also have a top surface and a bottom surface. An essentially water impermeable fiber-reinforced thermoplastic underlay may be adhered to the bottom surface of the wood member.