A nuclear island base slab of a nuclear power plant and a manufacturing method therefor, and a nuclear island of a nuclear power plant. The nuclear island base slab of a nuclear power plant includes a concrete base slab body and a plurality of air ducts embedded in the concrete base slab body. The air duct has an internal-penetrating bent pipe structure. A first end of the air duct is exposed on an upper surface of the concrete base slab body. A second end of the air duct is exposed on a side surface or the upper surface of the concrete base slab body.

A multi-piece storage tank pad is configured to support a storage tank used in oilfield operations. The multi-piece pad includes a plurality of pad pieces where each pad piece has a core coated with a polymeric coating. Each pad piece also defines at least two connector receiving contours. Two pad pieces of the multi-piece pad are joined by a connector. Each connector also has a core that is coated with the polymeric coating. Each connector is separate from the plurality of pad pieces, and each has a shape that corresponds to two adjacent connector receiving contours.

A portable and modular foundation that can be utilized to support a monopole includes a central hub and a plurality of legs. A proximal end of each leg is removably attached to the central hub. A plurality of floor panels extends from proximate the hub to a perimeter of the foundation and define a substantially uninterrupted floor. With the plurality of floor panels attached to the legs, the foundation can optionally be buried where the soil or other material is positioned on top of the floor panels to provide the necessary ballast to allow the foundation to retain a monopole with a piece of equipment in an elevated position. Alternatively, if the foundation is to be utilized above ground, a plurality of wall panels can be attached to the floor panels and the legs with braces to retain the wall panels in a substantially vertical position. The plurality of wall panels forms a substantially continuous wall about a perimeter of foundation such that ballast can be placed therein.

A portable and modular foundation that can be utilized to support a monopole includes a central hub and a plurality of legs. A proximal end of each leg is removably attached to the central hub. A plurality of floor panels extends from proximate the hub to a perimeter of the foundation and define a substantially uninterrupted floor. With the plurality of floor panels attached to the legs, the foundation can optionally be buried where the soil or other material is positioned on top of the floor panels to provide the necessary ballast to allow the foundation to retain a monopole with a piece of equipment in an elevated position. Alternatively, if the foundation is to be utilized above ground, a plurality of wall panels can be attached to the floor panels and the legs with braces to retain the wall panels in a substantially vertical position. The plurality of wall panels forms a substantially continuous wall about a perimeter of foundation such that ballast can be placed therein.

A foundation for wind turbine tower and a pre-assembly method for the tower, in which the tower comprises sections divided into shell segments, and where the foundation comprises a pile cap with an upper base, a lower base and a slanted surface, with the upper base having a smaller area than the lower base. The foundation comprises a set of support elements that extend above the slanted surface of the pile cap arranged so that free upper surfaces of these support elements provide a support surface for the shell segments for the pre-assembly of a section, and a set of slender connection elements that are connected to the pile cap and whose open end is configured connect to the shell segments of a section.

This disclosure describes devices and methods for forming voids in or adjacent concrete structures. In some embodiments, a device may include a structure. The structure may be substantially planar. The structure may include a plurality of channels extending therefrom. In some embodiments, the channels are closed at a first end distal from the structure. In some embodiments, the channels are open at a second end proximal to the structure. In some embodiments, the device may be formed from a molded pulp. The molded pulp may be configured to inhibit penetration of water. In some embodiments, the device may be configured to substantially support poured concrete during at least a portion of a curing process of the poured concrete.

This disclosure describes devices and methods for forming voids in or adjacent concrete structures. In some embodiments, a device may include a structure. The structure may be substantially planar. The structure may include a plurality of channels extending therefrom. In some embodiments, the channels are closed at a first end distal from the structure. In some embodiments, the channels are open at a second end proximal to the structure. In some embodiments, the device may be formed from a molded pulp. The molded pulp may be configured to inhibit penetration of water. In some embodiments, the device may be configured to substantially support poured concrete during at least a portion of a curing process of the poured concrete.

A building system includes a plurality of panels. Each of the panels includes a plurality of studs configured to serve as structural members and a polymeric block including a structural layer defined by the width of the studs and an offset layer. The offset layer extends in an interior direction from the structural layer. Upper and lower lengthwise notches may be included in the offset layer of the polymeric block. Non-structural elements are installed in the upper and lower lengthwise notches for use in mounting interior elements (e.g., wall cladding) to the interior side of the panels

A building system includes a plurality of panels. Each of the panels includes a plurality of studs configured to serve as structural members and a polymeric block including a structural layer defined by the width of the studs and an offset layer. The offset layer extends in an interior direction from the structural layer. Upper and lower lengthwise notches may be included in the offset layer of the polymeric block. Non-structural elements are installed in the upper and lower lengthwise notches for use in mounting interior elements (e.g., wall cladding) to the interior side of the panels

A permanent frost protected shallow foundation footing for a building is assembled from a plurality of form parts arranged in a chain that is partially below ground level to form a foundation perimeter. The form parts are made of a lightweight material such as insulating foam material shaped as an elongated sectional unit with an overhang part overhanging a cavity part of an interior cavity. The interior cavity has an opening for receiving a concrete pour concurrent with a concrete pour of a floor. Open ends of the assembled sectional units abut each other in end-to-end alignment to form an elongated cavity inside the perimeter chain of form parts that is filled with concrete. The overhang part may have a foot shape that fits inside the interior cavity of another form part that may also have a foot shape for compact storage or transport prior to assembly.