A device is provided for damping hydrosound in liquid emitted from a sound-emitting body in the liquid. The device includes a plurality of gas-filled bodies distributed in the liquid in an area of the hydrosound-emitting body and at a distance from each other. Each of the gas-filled bodies has a natural frequency that corresponds to an emitted frequency range of the hydrosound so as to dampen the hydrosound through resonant oscillations.

An energy dissipater comprising a plurality of periodic hyperbolic surfaces, forming a continuous surface-structure, and enveloping contiguous tunnels there through.

An energy dissipater comprising a plurality of periodic hyperbolic surfaces, forming a continuous surface-structure, and enveloping contiguous tunnels there through.

This disclosure provides methods, systems, and kits for building seawalls using mechanically interlocking blocks. The interlocking blocks have interiors that can be filled with sand, gravel, or cementitious material after formation of a wall. The interlocking blocks that can be connected on any side to form a structure, wall, foundation, floor, building, flotation device, gardening structure, or toy. The interlocking blocks typically comprise center openings and connecting openings on each side and can be connected with hardware through the connecting openings. The center openings allow for materials such as pipes, wires, conduit, and rebar to pass through interlocked blocks. Connected blocks can also be filled with fortifying material to strengthen the structure. Sides of connected blocks can be covered with faceplates to direct flow of fortifying material and aid in the creation of desired configurations. Also provided are connectors for connecting sides of the interlocking blocks.

A modular pier including: a plurality of connectable pier sections wherein each pier section includes a frame having a top, a bottom, at least one transverse frame member, a first transverse end frame member, a second transverse end frame member, a first longitudinal side frame member and a second longitudinal side frame member, at least one longitudinal anti-torsion member, at least one male connector, attached to the first end of the frame of each pier section; and at least one female connector, attached to the second end of the frame of each pier section, the at least one male connector including a first rod member and a second rod member; the second rod member being proximate the first rod member and lower the first rod member in relation to the top of the pier section; the at least one female connector including a first receiver for receiving the first rod member; and a second receiver for receiving the second rod member; the second rod member receiver being proximate the first rod member receiver and lower to the first rod member receiver in relation to the top of the pier section; wherein the first receiver receives the first rod prior to the second receiver receiving the second rod wherein the first rod in the first receiver facilitates maneuvering of the second pier section in relation to the first pier section during assembly and disassembly of the modular pier.

A modular pier including: a plurality of connectable pier sections wherein each pier section includes a frame having a top, a bottom, at least one transverse frame member, a first transverse end frame member, a second transverse end frame member, a first longitudinal side frame member and a second longitudinal side frame member, at least one longitudinal anti-torsion member, at least one male connector, attached to the first end of the frame of each pier section; and at least one female connector, attached to the second end of the frame of each pier section, the at least one male connector including a first rod member and a second rod member; the second rod member being proximate the first rod member and lower the first rod member in relation to the top of the pier section; the at least one female connector including a first receiver for receiving the first rod member; and a second receiver for receiving the second rod member; the second rod member receiver being proximate the first rod member receiver and lower to the first rod member receiver in relation to the top of the pier section; wherein the first receiver receives the first rod prior to the second receiver receiving the second rod wherein the first rod in the first receiver facilitates maneuvering of the second pier section in relation to the first pier section during assembly and disassembly of the modular pier.

Disclosed is a crest element in an armor layer assembly of a breakwater. The crest element includes: a central part; two wings extending from the central part in opposing directions along, when placed on a breakwater, the length direction of the breakwater; and a nose extending from the central part in a forward direction transverse to the length direction of the breakwater. The backside of the central part is a vertically oriented, back face facing in a backward direction opposite to the forward direction. The crest element may in particular be used as crest element for armor layers including armor elements of the type having a central part from which: two wings extend in opposing directions, and a tail and nose extend in opposing directions transverse to the direction of extension of the wings. Also disclosed is an armor layer, a breakwater and methods using the crest elements.

Disclosed is a crest element in an armor layer assembly of a breakwater. The crest element includes: a central part; two wings extending from the central part in opposing directions along, when placed on a breakwater, the length direction of the breakwater; and a nose extending from the central part in a forward direction transverse to the length direction of the breakwater. The backside of the central part is a vertically oriented, back face facing in a backward direction opposite to the forward direction. The crest element may in particular be used as crest element for armor layers including armor elements of the type having a central part from which: two wings extend in opposing directions, and a tail and nose extend in opposing directions transverse to the direction of extension of the wings. Also disclosed is an armor layer, a breakwater and methods using the crest elements.

A walkway for use between a shoreline of a body of water and at least a portion of a building exposed to the body of water, the walkway including: a base adjacent to the building; a plank having a surface for use by pedestrians to walk upon when the plank is in a first position at least indirectly disposed on the base, the plank having a first end rotatably connected to the base and having a second end extending from the first end away from the building along a length of the plank, the surface being exposed for use by the pedestrians to walk upon when the plank is in the first position; and a lifting mechanism operatively connected to the plank to rotate the plank from the first position to a second position where the length of the plank is oriented adjacent to a wall of the building to impede a rising height of the body of water.

A walkway for use between a shoreline of a body of water and at least a portion of a building exposed to the body of water, the walkway including: a base adjacent to the building; a plank having a surface for use by pedestrians to walk upon when the plank is in a first position at least indirectly disposed on the base, the plank having a first end rotatably connected to the base and having a second end extending from the first end away from the building along a length of the plank, the surface being exposed for use by the pedestrians to walk upon when the plank is in the first position; and a lifting mechanism operatively connected to the plank to rotate the plank from the first position to a second position where the length of the plank is oriented adjacent to a wall of the building to impede a rising height of the body of water.