A radiation shielding structure or vault includes an outer wall and an inner wall. The outer wall includes at least one outer wall panel formed into a cylinder shape having an outer wall opening. The inner wall includes at least one inner wall panel formed into a cylinder shape having an inner wall opening aligned with the outer wall opening. Tie rods secure the inner wall to the outer wall to support and hold the spacing between the walls. A tunnel structure is inside the inner wall opening and the outer wall opening. A radiation shielding door is coupled to the tunnel structure. A radiation shielding filler material is disposed in between the outer wall and the inner wall.

A radiation shielding structure or vault includes an outer wall and an inner wall. The outer wall includes at least one outer wall panel formed into a cylinder shape having an outer wall opening. The inner wall includes at least one inner wall panel formed into a cylinder shape having an inner wall opening aligned with the outer wall opening. Tie rods secure the inner wall to the outer wall to support and hold the spacing between the walls. A tunnel structure is inside the inner wall opening and the outer wall opening. A radiation shielding door is coupled to the tunnel structure. A radiation shielding filler material is disposed in between the outer wall and the inner wall.

The invention of the present disclosure may be a temporary structure comprising a plurality of conduits, each conduit comprising a lumen and a standard length; a plurality of connectors, each of the plurality of connectors comprising at least one attachment member, wherein each of the at least one attachment members is configured to reversibly attach to at least one of the plurality of conduits, and wherein each of the lumens is sized to accept at least one attachment member; and a plurality of panels, wherein each of the plurality of panels is configured to reversibly attach to at least two of the plurality of conduits.

The invention of the present disclosure may be a temporary structure comprising a plurality of conduits, each conduit comprising a lumen and a standard length; a plurality of connectors, each of the plurality of connectors comprising at least one attachment member, wherein each of the at least one attachment members is configured to reversibly attach to at least one of the plurality of conduits, and wherein each of the lumens is sized to accept at least one attachment member; and a plurality of panels, wherein each of the plurality of panels is configured to reversibly attach to at least two of the plurality of conduits.

An encapsulated polymeric article is disclosed. The encapsulated polymeric article may include a polymer substrate and a metallic outer shell at least partially encapsulating the polymer substrate. The encapsulated polymeric article may be fabricated by a method comprising: 1) providing a mandrel in a shape of the encapsulated polymeric article, 2) shaping the metallic outer shell on the mandrel, 3) removing the mandrel from the metallic outer shell, and 4) molding the polymeric substrate into the metallic outer shell through a port formed in the metallic outer shell to provide the encapsulated polymeric article.

An encapsulated polymeric article is disclosed. The encapsulated polymeric article may include a polymer substrate and a metallic outer shell at least partially encapsulating the polymer substrate. The encapsulated polymeric article may be fabricated by a method comprising: 1) providing a mandrel in a shape of the encapsulated polymeric article, 2) shaping the metallic outer shell on the mandrel, 3) removing the mandrel from the metallic outer shell, and 4) molding the polymeric substrate into the metallic outer shell through a port formed in the metallic outer shell to provide the encapsulated polymeric article.

A method of making a virgin joint between at least two separate structural hollow sections in a truss or jacket structure made of the at least two structural hollow sections may include the steps of applying a fiber reinforced polymer wrap around the at least two structural hollow sections in a transitional area, covering and thus bonding together the at least two structural hollow sections, and forming the virgin joint between the at least two structural hollow sections and the fiber reinforced polymer wrap. Welding of the virgin joint between the at least two structural hollow sections is avoided.

An extendable arm includes first and second rigid members forming a cross unit. Each rigid member includes one end portion including one of end coupling shafts, the other end portion including the other end coupling shaft, and a middle portion including a middle coupling shaft. The one end portion of each rigid member includes a bottom-side outer side surface that surface-contacts a base surface when the extendable arm in an extended state is placed thereon. The other end portion of each rigid member includes a top-side outer side surface extending parallel to the bottom-side outer side surface of each rigid member. The middle portion of each rigid member includes a middle strip region passing through a middle coupling shaft and perpendicular to the bottom-side outer side surface and the top-side outer side surface.

An extendable arm includes first and second rigid members forming a cross unit. Each rigid member includes one end portion including one of end coupling shafts, the other end portion including the other end coupling shaft, and a middle portion including a middle coupling shaft. The one end portion of each rigid member includes a bottom-side outer side surface that surface-contacts a base surface when the extendable arm in an extended state is placed thereon. The other end portion of each rigid member includes a top-side outer side surface extending parallel to the bottom-side outer side surface of each rigid member. The middle portion of each rigid member includes a middle strip region passing through a middle coupling shaft and perpendicular to the bottom-side outer side surface and the top-side outer side surface.

A connector assembly, having an upper connector, a pin coupling the upper connector to a lower connector and a gusset plate sandwiched between the upper and lower connectors. Also, disclosed is a hoistable connector assembly, a lifting frame assembly, a coupling system for modular frame units, a method for assembling a module unit using the connector assembly, and a modular frame unit and building having the connector assembly.