A method and apparatus according to which a blast resistant shelter is assembled. The blast resistant shelter includes first and second structural members, a third structural member coupled to the first and second structural members, a first airway adjacent the third structural member, and a first blast panel pivotably mounted to the third structural member and adapted to pivot thereabout in response to a blast wave. In a first configuration, the first blast panel is detachably connected to a first portion of the blast resistant shelter and prevented from pivoting about the third structural member so that the first blast panel obstructs air flow through the first airway. In a second configuration, in response to the blast wave, the first blast panel is detached from the first portion of the blast resistant shelter and permitted to pivot about the third structural member to permit air flow through the first airway.

A method and apparatus according to which a blast resistant shelter is assembled. The blast resistant shelter includes first and second structural members, a third structural member coupled to the first and second structural members, a first airway adjacent the third structural member, and a first blast panel pivotably mounted to the third structural member and adapted to pivot thereabout in response to a blast wave. In a first configuration, the first blast panel is detachably connected to a first portion of the blast resistant shelter and prevented from pivoting about the third structural member so that the first blast panel obstructs air flow through the first airway. In a second configuration, in response to the blast wave, the first blast panel is detached from the first portion of the blast resistant shelter and permitted to pivot about the third structural member to permit air flow through the first airway.

A foundation for a system for protecting a surface is disclosed. The foundation comprises a base, a suction assembly, a shield and one or more supports. The suction assembly may include a suction member having a rim, and a pump. The suction member is configured to be releasably sealed against the surface. The shield may be mounted to the outer face of the base. The shield is disposed opposite to the suction member and is configured to obstruct penetration by a fastener into the portion of the outer face covered by the shield. The one or more supports are mounted to the outer face. Each support includes a ledge that extends outward from the base. Also disclosed is a system for boarding-up a window disposed in a structure.

A foundation for a system for protecting a surface is disclosed. The foundation comprises a base, a suction assembly, a shield and one or more supports. The suction assembly may include a suction member having a rim, and a pump. The suction member is configured to be releasably sealed against the surface. The shield may be mounted to the outer face of the base. The shield is disposed opposite to the suction member and is configured to obstruct penetration by a fastener into the portion of the outer face covered by the shield. The one or more supports are mounted to the outer face. Each support includes a ledge that extends outward from the base. Also disclosed is a system for boarding-up a window disposed in a structure.

A blast resistant barrier system includes a base, a support structure extending outward from the base, a protective barrier that is pivotally coupled with the support structure at a first point of the protective barrier, and a shear pin that is configured to couple a second point of the protective barrier to the support structure so as to constrain rotation of the protective barrier relative to the support structure. The shear pin is configured to shear upon a threshold amount of force being applied to a face of the protective barrier. Once the shear pin shears, the protective barrier is permitted to rotate relative to the support structure about the first point.

Breakthrough resistant drywall structure, classified at least for resistance class 2 according to DIN EN 1627 from September 2011, having at least two studs arranged to form a drywall substructure, each stud including a base portion and at least one flange portion, the drywall structure further having a plurality of building panels attached to the at least one flange portion, the drywall structure 1 further including a filling material, wherein the filling material comprises fibers.

Breakthrough resistant drywall structure, classified at least for resistance class 2 according to DIN EN 1627 from September 2011, having at least two studs arranged to form a drywall substructure, each stud including a base portion and at least one flange portion, the drywall structure further having a plurality of building panels attached to the at least one flange portion, the drywall structure 1 further including a filling material, wherein the filling material comprises fibers.

An explosive blast absorption barrier, comprising a plurality of layers including a front layer and at least one further layer which comprises a recess forming layer providing a plurality of conical or pyramidal tapered recesses, each tapering from a wider opening at a surface distal from the front layer to a narrower end, each tapered recess being at least partially filled with a mixture of particulate matter and a gel.

An explosive blast absorption barrier, comprising a plurality of layers including a front layer and at least one further layer which comprises a recess forming layer providing a plurality of conical or pyramidal tapered recesses, each tapering from a wider opening at a surface distal from the front layer to a narrower end, each tapered recess being at least partially filled with a mixture of particulate matter and a gel.

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.