Abstract: A connector arrangement for joining adjacent chord bar reinforcements in wall panels for prefabricated tilt-up concrete buildings. The chord bar connection is comprised of a plurality of chord bars welded to a steel plate cast into the concrete of a prefabricated wall. Adjacent walls are connected by bolts passing through the metal plates attached to the cast in concrete chord bars. The bolting arrangement allows free movement of adjacent panels during dimensional changes caused by temperature and moisture variations in the concrete.

Abstract: A door-stop for handicapped people and particularly people in wheel chairs which permits the person to push a self-closing door open and lock it in an open position before passing through the doorway. The door-stop is comprised of a pivoted cross bar mounted at a convenient height traverse to the door connected by means of a lever to a door-stop at the corner of the door. The door can thus be pushed open and the cross bar moved downward to lock the door-stop. After the person passes through the door, he can simply lift the cross bar to release the door-stop allowing the door to close.

Abstract: A packaging system for storage of containers of low-level radioactive waste consisting of a concrete shell structure that houses the containers and a dry filler material that surrounds them. Void volume in the filler material is saturated with water, and during free-fall descent to the seafloor, a pressure compensation means equalizes pressures inside and outside the packaging structure and forces the filler material into intimate contact about the drums; on the seafloor, the filler material hardens to produce a highly secure barrier to any leaking of radioactive waste.

Abstract: A structural grade lightweight concrete that is especially suited for ocean pplications. The lightweight concrete uses regular lightweight aggregate particles that have been modified by filling the voids within the particles with a polymeric material. The polymer-filled aggregate particles are then bonded together using a cementitious or binder material to form concrete. Typically Portland cement is used as the binder to produce a lightweight concrete for construction of ocean structures.

Abstract: A means for placing freshly mixed concrete on the ocean floor at great des. A pipeline is grossly positioned by a ship whereas the position of the submerged end is controlled by guide wires, water jets, props, etc. The discharge device at the end of the pipeline includes a slip joint, a tank flooded with seawater to maintain the pipe end submerged a certain distance in the concrete, and an expansion chamber where the velocity of the concrete being discharged is reduced. Deflector means at the pipe end directs the concrete laterally and negates the vertical lift component of the discharging concrete.

Abstract: A system for placing piles into the seafloor by using pressure differential as the driving force. The pressure differential is created by a pump unit located either within or external to the pile. Operation of the pump unit which displaces both water and soil across a bulkhead section, enables the pile to be driven into and under the seafloor. A section of piling with a pump unit can operate as an uplift anchor, and multiple pumps on a large diameter piling can be embedded into the seafloor as a large foundation.

Abstract: A pressure differential seafloor corer-carrier for obtaining long core samples of seafloor sediments. The corer-carrier is composed of two main components: The first component is a pump assembly that pumps seawater and sediment as to create a negative pressure differential; the negative pressure differential being the driving force that forces the corers into the seafloor such that cores of over 100 feet in length can be obtained. The second component is a space frame mounted and fastened to the pump and functions as a rack to which conventional corers are attached. Once the corers are embedded to their full length, the pump is used to create a positive pressure differential which helps remove the corer-carrier from the seafloor.

Abstract: The mobile seafloor storage structure for storing POL (petroleum, oils, licants) comprising a pair of cylindrically-shaped enclosures having hemispherical-shaped end members. The two cylindrically-shaped enclosures are connected together by top, bottom and end members such that a center enclosure is formed between the pair of cylindrically-shaped enclosures. Various interconnections and related valves are utilized for moving POL, seawater, and gases from enclosure to enclosure thereby maneuvering the structure between the sea surface and the seafloor.

Abstract: A rigid ferro-cement construction panel comprising a plurality of U-shaped ections adjoined in abutting relationship such that the cross-section across the length thereof is in the shape of a square wave. The construction panel may be interfitted with other similar construction panels to form larger structures.