Systems and methods for the ultrasonic disruption of biofilm and algae growth on underwater structures utilize an ultrasonic actuator (10) that produces a natural frequency in the ultrasonic range. In some embodiments, the ultrasonic actuator (10) includes one or more piezoelectric transducers (110).

Systems and methods for the ultrasonic disruption of biofilm and algae growth on underwater structures utilize an ultrasonic actuator (10) that produces a natural frequency in the ultrasonic range. In some embodiments, the ultrasonic actuator (10) includes one or more piezoelectric transducers (110).

One example embodiment includes a steel and foam foundation. The steel and foam foundation includes a main body, where the main body is formed of EPS foam and a sloped exterior. The sloped exterior is formed of EPS foam on an exterior surface of the main body and ensures that the bottom of the steel and foam foundation is wider than the top of the steel and foam foundation. The steel and foam foundation also includes a first I-beam and a second I-beam. The first and second I-beams are placed on opposite edges of the main body. The steel and foam foundation further includes a first piece of L-metal, a second piece of L-metal, a third piece of L-metal, and a fourth piece of L-metal. Each piece of L-metal includes a first flange and a second flange and is placed around the remaining edges of the main body.

One example embodiment includes a steel and foam foundation. The steel and foam foundation includes a main body, where the main body is formed of EPS foam and a sloped exterior. The sloped exterior is formed of EPS foam on an exterior surface of the main body and ensures that the bottom of the steel and foam foundation is wider than the top of the steel and foam foundation. The steel and foam foundation also includes a first I-beam and a second I-beam. The first and second I-beams are placed on opposite edges of the main body. The steel and foam foundation further includes a first piece of L-metal, a second piece of L-metal, a third piece of L-metal, and a fourth piece of L-metal. Each piece of L-metal includes a first flange and a second flange and is placed around the remaining edges of the main body.

The present invention relates to a below grade, blind side, dual waterproofing membrane assembly incorporating a secondary membrane comprising of a bentonite sheet waterproofing layer, and a primary membrane comprising of a sheet membrane having an adhesive to fully bond to a concrete/shotcrete. The invention encompasses a dual layer or dual membrane system that acts as a barrier, and prevents, and blocks water and moisture, from passing from one side of the structure to the other side. The dual barrier layer system can be used along a wall, a floor, a ceiling, or along any structure which requires water or moisture proofing. The invention can be used between a concrete or shotcrete layer and the surrounding earth, such as, along an area that has a high water table, or a constant hydrostatic pressure, or high ground moisture, that may creep into a foundation or a wall.

Various embodiments of methods and apparatus for detecting a change in an orientation of a portion of a structure. In some embodiments, the apparatus includes a processor, an energy storage unit, a location reporting unit, a wireless communication module and one or more inclination sensors. In some embodiments, each of the one or more inclination sensors is configured to measure inclination by measuring an orientation of the each of the one or more inclination sensors relative to a gravitational acceleration vector.

Various embodiments of methods and apparatus for detecting a change in an orientation of a portion of a structure. In some embodiments, the apparatus includes a processor, an energy storage unit, a location reporting unit, a wireless communication module and one or more inclination sensors. In some embodiments, each of the one or more inclination sensors is configured to measure inclination by measuring an orientation of the each of the one or more inclination sensors relative to a gravitational acceleration vector.

A drainage device for use under the floor of a building to facilitate drainage of water along a foundation of the building under the floor. A bridge drainage device permits more rapid installation of the drainage devices. The bridge device can be used to bridge between two drainage devices so that it is not necessary to cut the drainage devices precisely to fit on a footing of any selected length.

A drainage device for use under the floor of a building to facilitate drainage of water along a foundation of the building under the floor. A bridge drainage device permits more rapid installation of the drainage devices. The bridge device can be used to bridge between two drainage devices so that it is not necessary to cut the drainage devices precisely to fit on a footing of any selected length.

A pavement repair system is provided utilizing solid phase auto regenerative cohesion and homogenization by liquid asphalt oligopolymerization technologies. The system is suitable for use in repairing asphalt pavement, including pavement exhibiting a high degree of deterioration (as manifested in the presence of potholes, cracks, ruts, or the like) as well as pavement that has been subject to previous repair and may comprise a substantial amount of dirt and other debris (e.g., chipped road paint or other damaged or disturbed surfacing materials). A system utilizing homogenization by liquid asphalt oligopolymerization is suitable for rejuvenating or repairing aged asphalt, thereby improving properties of the paving material.