According to one embodiment, a flood vent panel includes a plurality of insulation pieces positioned together, and a panel frame surrounding the plurality of insulation pieces. The flood vent panel is configured to be coupled to a frame positionable into an opening in a structure, so as to at least partially block a fluid passageway through the opening in the structure. One or more of the plurality of insulation pieces are configured to uncouple from the flood vent panel when at least a predetermined amount of pressure is applied to a portion of the flood vent panel by one or more of a fluid or an object carried by the fluid, so as to reduce an amount of blockage of the fluid passageway provided by the flood vent panel.

An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a continuous sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the continuous sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the continuous sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.

A floodgate is disclosed. The floodgate comprises: a panel for installation at a doorway to form a barrier against flooding; a hinge, the panel being movable between an opened position and a closed position about an axis of the hinge, the axis extending in use in an upright direction; and a sealing element coupled to an edge of the panel to provide sealing engagement with the ground when the panel is in the closed position thereby forming the barrier against flooding; wherein the hinge is configured to corporate with the panel to, upon the panel being moved from the closed position towards the opened position, cause the panel to move away from the ground thereby releasing the sealing engagement between the sealing element and the ground.

A flood barrier (100) is disclosed, which comprises at least two supporting posts (104a, 104b) for positioning at an entrance (102) of a building; and at least one panel (108) removably arranged intermediate a pair of the supporting posts to form the flood barrier, wherein the panel includes a plurality of seals having corrugated surfaces to interface with the supporting posts to provide a water-tight arrangement against entry of flood waters into the building. A method of operating said flood barrier is also disclosed.

Embodiments are described for a flood defense system having a barrier portion which is selectively engaged with a frame of an entryway. A seal on the interior barrier portion engages a gasket on the frame to provide a barrier for flood waters entering a structure.

One illustrative device disclosed herein includes a package and a plurality of individual sections of a moldable material positioned within the package, wherein the plurality of individual sections of the moldable material are adapted to be deformed into a substantially contiguous seal between a first structure and a second structure and wherein the number of the individual sections of the moldable material within the package is selected so as to provide the necessary quantity of the plurality of individual sections of the moldable material so as to form the substantially contiguous seal.

According to one embodiment, a flood vent panel includes a plurality of insulation pieces positioned together, and a panel frame surrounding the plurality of insulation pieces. The flood vent panel is configured to be coupled to a frame positionable on a structure, so as to at least partially block a fluid passageway through an opening in the structure. Each of the plurality of insulation pieces is separate from the other insulation pieces of the plurality of insulation pieces. Each of the plurality of insulation pieces is separate from the panel frame.

The present disclosure is directed to a flood barrier designed for the dry-flood proofing of door and window openings in a building. The flood barrier includes a rigid frame, preferably formed of metal extrusions. To this frame are clamped a water-impervious barrier and a sacrificial bladder to protect the water-impervious barrier from impacts by wind- or water-borne, debris and impacts. A number of webbings may be provided on the side of the water-impervious barrier opposite the sacrificial bladder to further support the water barrier layer. Sealing gaskets are provided on the rigid frame where the frame contacts the building, or in case of a door opening, also the floor. The sacrificial bladder permits water to accumulate between the sacrificial bladder and the water-impervious layer thereby utilizing the non-compressible nature of the water to attenuate the impacting force.

An adjustable flood barrier assembly is removable, temporary and D.I.Y. (Do It Yourself) flood barrier. It consists of panels, and structural framing members, that can be customized for varying sizes of doorway openings, which will cover most residential doors. Once installed at doorway openings, it will prevent flood damage to buildings due to water ingress through door openings during storms or floods. The proposed barrier can resist water pressure and prevent water ingress into buildings up to a few feet of water. The assembly is narrow enough to fit within the gap between outer face of door and outer edge of jamb of usual doors in buildings, and can be installed just outside the door so that door can be closed or opened as desired. It consists of impervious panels, and sliding type so that they can be adjusted to suite to various widths. These panels will connect to horizontal members which bear on jambs. A flexible rubber seal with hydrophilic layer is provided between jambs and sill, and the panel edge returns. The rubber seal is pressed hard against sill and jambs by advancing screws. The screws are supported by legs attached to horizontal members mentioned above, and to vertical members. A vertical member is provided between head of door frame and sill. Panels in flood barrier can be further described as lower panels and upper panels. The height of lower panel is designed such that the occupants can easily walk over the panels for low height of flood waters. In the event that high flood is expected, an extra extendable facility is included. An additional panel and an extendable flexible water proof cloth is included in the system so that one can easily extend the extra height requirement if water height is going to exceed the height of lower panels. Once the flood threat is over, the assembly can be disassembled and stowed. It is an easily assembled system needs no drilling to door frame, or to the floor, instead it takes advantage of bearing strength of door frame to gain stability.

An automatic auto-sensing flood protection roller shutter with auto-locating reinforced column includes a door plate composed of a plurality of door panels, at least one reinforced column automatically movable by a motor to a reinforcing position behind the door plate when the door plate is lowered upon sensing a flood, and a bolt and bolt driving device for securing the at least one reinforced column in the reinforcing position.