The disclosed water barrier systems may include a first mobile water barrier, and adjacent second mobile water barrier, and a translation mechanism for translating the first mobile water barrier and the second mobile water barrier toward each other. Lowering mechanisms may be configured to lower sidewalls of the mobile water barriers. The mobile water barriers may include sealing elements to form water seals between the adjacent mobile water barriers and between the sidewalls and a surface. Related methods of forming a water barrier assembly are also disclosed.

A connection system for connecting at least one membrane to a rigid support, the connection system comprising: at least one elongated clamping profile, at least one locking unit configured for attaching the at least one elongated clamping profile to the rigid support, thereby clamping a portion of the at least one membrane between the at least one elongated clamping profile and the rigid support so as to achieve a sealing between the at least one membrane and the rigid support, wherein the at least one locking unit is a discrete state locking unit movable between several predetermined locking unit states, each locking unit state corresponding to a connection system stage, the predetermined locking unit states including: an Open locking unit state in which the locking unit is configured to provide a gap between the elongated clamping profile and the rigid support, allowing the portion of the at least one membrane to be inserted between the elongated clamping profile and the rigid support, the Open locking unit state corresponding to an Open stage of the connection system, a Closed locking unit state in which the locking unit is configured to press the clamping profile toward the rigid support so that the at least one membrane is clamped between the elongated clamping profile and the rigid support, the Closed locking unit state corresponding to a Closed stage of the connection system in which a sealing is provided between the at least one membrane and the rigid support, and an Intermediate locking unit state between the Open locking unit state and the Closed locking unit state, in which Intermediate state the at least one membrane is allowed to slide along the elongated clamping profile without disengaging therefrom, corresponding to an Adjustment stage of the connection system.

Provided is a flood barrier for use with HAZMAT materials. The barrier includes a first wall and a second wall joined together at a first end, tape for securing the barrier to a surface to prevent leaks, multiple flexible ribs attached between the first wall and second walls, one or more holes for filling, and a rod that separates an open end of the first and second wall to form a chamber with an open end. Several insulating floats are evenly spaced between the ribs on a bottom surface of the first wall to prevent overflow. A gap filler, such as uncured silicone and tape is used in the transition from a terminal rib to an exposed corner of the barrier. The barrier can withstand high heat for a sustained period of time, is leak-proof, and includes an improved method of sealing corners.

Embodiments herein relate to a ground sealing arrangement for a portable flood barrier further comprising a vertical wall. The ground sealing arrangement is arranged to be positioned on the ground. The ground sealing arrangement comprises a main sealing layer forming a main body of the ground sealing arrangement. The main sealing layer is impermeable to water. The ground sealing arrangement further comprises a bottom sealing layer arranged on a ground-facing underside of the main sealing layer. The bottom sealing layer is attached to the main sealing layer at a distance L from a peripheral edge of the main sealing layer which is most distal from the first edge of the ground sealing arrangement such that the bottom sealing layer has a free end extending from the point where the bottom sealing layer attaches to the main sealing layer towards the peripheral edge of the main sealing layer, and comprises a highly flexible and/or glutinous material which is stretchable and sticks to the ground when the material is soaked with water

Techniques for a pin-point assessment of resilience and resistance of structures against flooding are disclosed. The model is based on dimensionless analytical functions related to the variation of functionality during a period of interest, including the losses in the disaster and the recovery path. This evolution in time including recovery differentiates the resilience approach from the other approaches addressing the loss estimation and their momentary effects. The recovery process is considered to be dependent on societal preparedness, public policies and can take different forms, which is estimated using recovery functions. Based on the resilience, action plans are created to improve resiliency to disasters.

A system for use in diverting a liquid includes a substantially impermeable liner and a plurality of supporting structures connectable to each other and configured for supporting the liner and a liquid when the liquid is received in a portion bounded by the liner. A first supporting structure of the plurality of supporting structures includes a first dam phase, a first brace and a first base connecting said first dam face to said first brace. A second supporting structure of the plurality of supporting structures includes a second dam face, a second brace and a second base connecting the first dam face to the second brace. The first base is configured to be located on a ground surface to support the first supporting structure and the second base is configured to be located on the ground surface to support the second supporting structure. The first dam face and the second dam face contact and support the liner. The first dam face is connected to and inclined upwardly away from a first lower end of the first base. The second dam face is connected to and inclined upwardly away from a second lower end of the second base. The first dam face is connected to an upper end of the first brace and a second dam face is connected to a second upper end of the second brace. The first dam face is supported by the first brace and the second dam face is supported by the second brace. A plurality of link bars connects the first dam face and the second dam face. The plurality of link bars is vertically spaced from each other along longitudinal dimensions of the first dam face and the second dam face. The first dam face and the second dam face include slots on contacting surfaces of the first dam face and the second dam face contacting the liner. The slots receive the plurality of link bars connecting the first dam face and the second dam face.

A ground sealing arrangement for a portable flood barrier to be positioned on the ground includes a vertical wall and a main sealing layer forming a main body. The main sealing layer is impermeable to water. The ground sealing arrangement further includes a bottom sealing layer arranged on a ground-facing underside of the main sealing layer. The bottom sealing layer is attached to the main sealing layer at a distance from a peripheral edge of the main sealing layer that is most distal from the first edge of the ground sealing arrangement such that the bottom sealing layer has a free end extending from the point where the bottom sealing layer attaches to the main sealing layer towards the peripheral edge of the main sealing layer, and comprises a highly flexible and/or glutinous material which is stretchable and sticks to the ground when the material is soaked with water.

Provided is a flood barrier for use with HAZMAT materials. The barrier includes a first wall and a second wall joined together at a first end, tape for securing the barrier to a surface to prevent leaks, multiple flexible ribs attached between the first wall and second walls, one or more holes for filling, and a rod that separates an open end of the first and second wall to form a chamber with an open end. Several insulating floats are evenly spaced between the ribs on a bottom surface of the first wall to prevent overflow. A gap filler, such as uncured silicone and tape is used in the transition from a terminal rib to an exposed corner of the barrier. The barrier can withstand high heat for a sustained period of time, is leak-proof, and includes an improved method of sealing corners.

In a system comprising an customer providing a service to a plurality of client devices, a method and system for providing an customer-specific digital certificate to a client device of the plurality of client devices is disclosed. The method comprises receiving, in an intermediate certificate authority, a pre-generated digital certificate and an encrypted client device private key encrypted according to a private key encryption key PrKEK, receiving, from the client device, a request for the customer-specific digital certificate, the request comprising at least one of client device identifying information and information identifying the customer, the request signed according to a pre-provisioned client device digital certificate, and transmitting the customer-specific digital certificate and the encrypted client device private key to the client device.

A movable tsunami buffer dam has a unit configured such that a plurality of separate units, each of which having a shape in which a frame made of a light material is sandwiched by a pair of plates made of a light material, is stacked with said plates disposed in a pile; and a locking member for locking said unit to a ground surface such that said unit can rise up from said ground surface and collapse onto said ground surface. The separate units has a structure in which water from a tsunami can advance into a space formed between said plates by said frame.

A required thickness is ensured due to said unit being configured such that said separate units are stacked, and the manufacturing cost is reduced to a greater extent than in the case of a dam configured from a single separate unit of said required thickness, because the big size lumber for obtaining the units is very expensive. The unit is installed in a state of being collapsed on said ground surface at normal times, and when a tsunami arrives, said unit rising up due to the force of the tsunami and the buoyancy of the seawater, resisting the passage of the tsunami and reducing the power of the tsunami.