Methods and apparatus facilitate the construction of a building using prefabricated building units, each having a horizontal upper exterior surface and a plurality of vertical wall surfaces, wherein at least some of the prefabricated building units have at least one hollow column formwork structure. The prefabricated building units are lowered onto a pre-existing base at a construction site. A first story of the building is created by arranging a plurality of the prefabricated building units adjacent to each other on the base. Structural bearing material is applied to fill the hollow column formwork structures to create structural columns connected to the structural deck. Structural bearing material is applied to the horizontal upper exterior surfaces of the adjacent prefabricated building units to create a single structural deck over the prefabricated building units.

The present disclosure relates to components and methods for a modular building system, used as mid-rise residential and office building, to pre-fabricate and assemble the system quickly, easily and simply. More particularly, it relates to a building temporal self-supporting panel system invention that includes formwork, structural rebars and insulated panels for the purpose of wall, floor and roof. The panel system is composed of a number of layers and a temporal-structural frame, integrating all constructive elements needed: temporal structural capacity, thermal and acoustical insulation, impermeability and pre-installations; designed considering operation, function, fabrication and assembling.

This invention relates to a self-supporting three-dimensional prestressed structure, as well as a method and a device for erecting same, to be employed in the construction of residential and nonresidential buildings.

The structure is constructed of vertical form-defining flexible rodlike members (1) stressed during the construction of the structure, as well as horizontal flexible rodlike members (2) each forming a closed curve. The horizontal members (2) are also stressed during construction and welded or rigidly affixed by other means to the vertical form-defining members (1).

Instead of horizontal circular members (2) the structure can be constructed completely or to some extent using a spiral member, also stressed during the construction of the structure that is rigidly affixed to the vertical form-defining flexible members (1).

The subject disclosure is related to a beam-column connection structure, comprising a first H-shaped steel beam, a second H-shaped steel beam generally perpendicularly connected to a side of the first H-shaped steel beam, and a third H-shaped steel beam generally perpendicularly connected to another side of the first H-shaped steel beam wherein a main stirrup penetrates these H-shaped steel beams and surrounds the joints thereof.

Formwork for constructing a floor system in a building, the formwork comprising: a plurality of pre-cast concrete joists positioned in a generally parallel arrangement, wherein one or more of the joists comprises: a horizontal base portion; and an upwardly directed portion extending substantially along the length of the joist, the upwardly directed portion having spaced apart surfaces extending upwardly from the base wherein respective shelf portions of the base are located adjacent said upwardly directed portion; a plurality of pre-cast concrete members for extending along a length of the joists for receiving wet concrete; and a supporting arrangement to support opposite ends each of the pre-cast concrete members upon oppositely arranged shelf portions of two adjacent joists.

Formwork for building a wall system, the formwork comprising: a first pre-cast concrete wall panel and a second pre-cast concrete wall panel, the first wall panel being adapted for being positioned in a spaced relationship with the second wall panel; a hollow core defined by oppositely arranged surfaces of the first and second wall panels, the core being adapted for receiving wet concrete; and a connecting arrangement for inter-connecting the first wall panel with the second wall panel in the spaced relationship, the connecting arrangement extending generally in an outwardly direction relative to said oppositely arranged surfaces of the first and second wall panels.

A metal skeleton for the reinforcement of a vertically elongated concrete structure has a first plurality of leg members each having top and bottom ends and inner and outer side edges together defining a leg body portion. A first plurality of rib plate engagement slots are formed in at least one of the inner side edge and the outer side edge. Each of the leg members is formed from a flat sheet of metal material. A first plurality of rib plates each define a generally planar central body portion and each have a first plurality of leg-engagement slots projecting into the central body portion. The leg-engagement slots are dimensioned and adapted to frictionally engage with respective ones of the rib plate engagement slots. The first plurality of leg-engagement slots slidingly interfit within respective ones of the first plurality of rib-engagement slots to securely connect the rib plates to the leg members to form the metal skeleton.

A metal skeleton for the reinforcement of a vertically elongated concrete structure has a first plurality of leg members each having top and bottom ends and inner and outer side edges together defining a leg body portion. A first plurality of rib plate engagement slots are formed in at least one of the inner side edge and the outer side edge. Each of the leg members is formed from a flat sheet of metal material. A first plurality of rib plates each define a generally planar central body portion and each have a first plurality of leg-engagement slots projecting into the central body portion. The leg-engagement slots are dimensioned and adapted to frictionally engage with respective ones of the rib plate engagement slots. The first plurality of leg-engagement slots slidingly interfit within respective ones of the first plurality of rib-engagement slots to securely connect the rib plates to the leg members to form the metal skeleton.

A permanent form member for a composite construction member comprises an elongated body having an outer wall defining a concrete retaining channel therethrough, and a bracing member extending from the outer wall into the concrete retaining channel. The bracing member comprises ribs fixed to the outer wall at diametrically opposed positions thereon. For use as a beam form the outer wall of the elongated member is open along its entire length such that concrete retaining channel is substantially U-shaped. A method of constructing a composite concrete house frame is provided wherein form members are connected to a foundation wall and filled with concrete to form composite columns. Form members for beams are connected to the composite columns and interconnected to one another and filled with concrete to form a composite lintel supported on the plurality of composite columns.

The invention relates to a method for producing cast structures, and a set of connectors for connecting a pair of opposed, spaced apart boards which are useful in said method. A kit of elements useful as support frames in the production of the cast structures is also provided.