A foldable blast proof protective structure comprising a foldable walls envelope with integrated door, a detachable ceiling and a detachable floor, wherein such a modular design of the structure enables a complete assembly within a few simple steps, for which no special tools or heavy cranes are required.

A modular shelter system includes a floor panel having a first curved surface along a lateral edge on a top side of the floor panel and a first inside surface located inside of the first curved surface. The modular shelter system additionally includes a wall panel having a second curved surface along a bottom end of the wall panel, wherein the second curved surface is configured to rotate relative to the first curved surface, and wherein the second curved surface is configured to mate with the first curved surface. The wall panel further has a second inside surface located inside of the second curved surface, wherein the second inside surface is configured to mate with the first inside surface when the wall panel is erected over the floor panel.

A glazed façade anchoring system to a building including a box with a connection system to the façade and connection to the building slab. The first and second connections enable relative movement between one another, when the façade moves within the gap between the rear surface of the façade and the building slab edge under the high pressure loads due to exceptional events such as explosions. The device includes one or more solid elements with dissipative components acting in compression in the inward building direction and one or more solid elements with dissipative components acting in compression in the outward building direction.

A glazed façade anchoring system to a building including a box with a connection system to the façade and connection to the building slab. The first and second connections enable relative movement between one another, when the façade moves within the gap between the rear surface of the façade and the building slab edge under the high pressure loads due to exceptional events such as explosions. The device includes one or more solid elements with dissipative components acting in compression in the inward building direction and one or more solid elements with dissipative components acting in compression in the outward building direction.

A floor-space saving NBC filtration system for collective protection shelters with NBC filter unit and means for changing the NBC filtration system state between a ventilation mode, effective during normal times or conventional hazard, and a NBC protection mode, effective during NBC hazard. The NBC filtration system is contained in a space out of a comfortable reach of the shelter occupants thus saving usable floor-space. The means for changing the NBC filtration system state is operated from a location within the comfortable reach of the shelter occupants. The NBC filter unit inlet and outlet are located at close proximity to each other, a pre-filter outlet is located in proximity to the NBC filter unit inlet and outlet with a changeover valve, serving as means for changing the NBC filtration system state, located there between. Resulting in simple operation and space saving by the changeover valve replacing prior art space consuming flexible pipes.

A combined net structure is disclosed that comprises a non-planar coarse net with a grid-like structure comprising a plurality of coarse cables wherein longitudinal coarse cables intersect with latitudinal coarse cables to form a plurality of coarse cells and cutouts of a fine net attached to the coarse net, wherein the fine net comprises a plurality of adjacent fine cables. Each non-edge fine cable is attached to two adjacent fine cables on each of its sides at a plurality of locations along their lengths forming attachment points, wherein the fine net is arranged in a form of an array of fine quadrangular cells with said attachment points constituting the vertices of the fine quadrangular cells. System that comprises the combined net structures are disclosed as well.

A shelter system having an erecting frame system and a protective skin system. The erecting frame system has at least two A-frame legs and at least one tensioning element. The A-frame legs each comprise at least one elongated structural member, each of the A-frame legs coalescing with at least one other A-frame leg with at least one connection. The tensioning element is at least temporarily affixed to a free end of each of the at least two A-frame legs, and comprises at least one elongated structural element capable of generating a tension force to draw the free ends of the A-frame legs towards one another, thereby at least temporarily lifting the connection to a predetermined height above the free end of each A-frame leg. A protective skin system is also provided with at least one side plane, one roof plane, and one end plane. The side plane is disposed between two A-frame legs; the roof plane is concordant with the ground surface; and the end plane is disposed between two A-frame legs of a constituent A-frame leg pair and a ground surface. The planar element of the protective skin system provides at least a partial barrier from a ballistic threat to a volume behind the planar element, the loading of the protective skin system being transferred at least in part first to the erecting frame system and ultimately to the ground surface.

A damped reinforced joint for a beam-column connection is provided for improving the resistance of steel-framed buildings against progressive collapse. Prestressing cables extend across each joint, and each prestressing cable is partially encased within a bent pipe. Each bent pipe may have multiple bends, forming a rippled or undulating shape. The prestressing cables strengthen the connections in the joints, and the bent pipes provide damping for dissipation of seismic energy and the like, thus improving resistance to earthquakes and other seismic, vibratory and/or shock events to the building frame.

A damped reinforced joint for a beam-column connection is provided for improving the resistance of steel-framed buildings against progressive collapse. Prestressing cables extend across each joint, and each prestressing cable is partially encased within a bent pipe. Each bent pipe may have multiple bends, forming a rippled or undulating shape. The prestressing cables strengthen the connections in the joints, and the bent pipes provide damping for dissipation of seismic energy and the like, thus improving resistance to earthquakes and other seismic, vibratory and/or shock events to the building frame.

A shielding system includes a plurality of transportable modules, wall panels, or pods that are connectable to form a containment area and to define a radiation barrier. Each of the plurality of transportable modules has a first radiation wall defining the containment area, a second radiation wall spaced apart from the second wall, and a radiation shielding fill material positioned between the first radiation shielding wall and the second radiation shielding wall. The radiation shielding fill material includes one of a superabsorbent polymer (SAP) filling a portion of a void between the first radiation wall and the second radiation wall, or a non-Newtonian fluid completely filling the void between the first radiation wall and the second radiation wall. A quantity of the radiation shielding fill material is sufficient to substantially reduce measurable radiation level outside the containment area.