The present invention relates to a formwork device for a battery formwork for the production of structural elements, in particular prefabricated concrete elements, which comprises at least two partition walls and the formwork device comprises two formwork panels that are connected to one another, preferably in an articulated manner, in order to be transferred from an unfolded state to a folded state, where each formwork panel comprises a formwork front side for attaching formwork elements and a formwork rear side, and the formwork rear sides of the two formwork panels face each other in the folded state and the formwork device is intended to be positioned in the folded state between the partition wall. The present invention further relates to an arrangement consisting of a battery formwork and at least one formwork device according to the invention, where the formwork device is arranged suspended in the battery formwork.

A ballast block has a uniquely designed framework consisting of lightweight, pre-fabricated, metal panel members and cross-bracing and elongated bracing members. The various components of the ballast block framework are compactly bundled and shipped to the end use location for assembly on-site. Once assembled, the ballast block framework is properly positioned on its permanent, end use location and concrete or equivalent ballast material is poured into the framework, completely filling its internal space. The ballast block can be sized and fabricated for the specific desired purpose.

A void form is composed of molded pulp and includes bottom-facing openings. Fresh concrete placed on top of a substrate material covering the void form structure is formed with a void space underneath that allows soil to expand.

A ballast foundation includes a portable rolled steel enclosure formed from multiple sections and further includes internal bracing. The internal bracing is used to support an upright vertical structural member that connects to an external load (such as a frame structure for a solar array) that is supported by the ballast foundation when the enclosure is filled with concrete.

The present invention relates to a rough-in box used during the construction of buildings having poured concrete flooring, such as multi-story high-rise buildings. The rough-in box may be used to retain an opening in the floor through which plumbing and mechanical components may be installed after concrete has been poured around the device and hardens into a slab. The present invention also relates to a method comprising the steps of assembling the side walls of a box, placing a lid made of a material stronger than that of the side walls and capable of supporting a weight of 2,000 pounds, placing the box over a hole on the floor, and pouring concrete to form a floor around the box. The box will remain in place providing an accessible penetration through the flooring with space for plumbing connections and a flush surface with the floor over which pallet jacks and workers may travel without obstruction.

There is provided a connector for coupling a fabric form and/or tubular form to a formwork. The connector includes a first elongate member connectable to the form and a second elongate member coupled to the first elongate member. The connector has a first position which is substantially planar so to extend parallel to and pierce the form. The connector may snap-fit couple and/or clamp to the form via the first elongate member. The first elongate member is foldable on itself and/or about an end portion of the form. The connector has a second position which is L-shaped. The second elongate member in the second position cantilevers outwards from the first elongate member so as to operatively connect to a base, temporary support member and/or formwork. The first elongate member pivotally, hingedly and/or foldably couples to the second elongate member and may thereafter lock in place in the second position.