A weldment that is embedded in a precast concrete building member that is used to join the concrete building member to other concrete building members. The weldment has a top plate, side plate, and outstanding top and bottom legs. The surface of the top plate and side plate are not embedded in the precast concrete building member. The legs are integrally formed with the top plate and side plate. The top plate and side plate present weldable surfaces to join by welding the precast concrete building member to another building member.

Building structures can be fabricated at an offsite, and then assembled at the construction site. The building structures can include beams and wall panels having metal attachments. The beams and wall panels can be assembled by coupling the metal attachments, for example, by welding.

An attachment device attaches adjacent first and second concrete pieces to one another along corresponding first and second interfacing side surfaces thereof, thereby forming a concrete piece attachment arrangement. The device includes an elongate base member having opposed first and second portions, and first and second lateral members securing to and respectively extending substantially perpendicularly from first and second ends of the base member. The first and second portions of the base member extend within first and second recesses respectively formed into the concrete pieces, in a direction generally perpendicular to the first and second interfacing side surfaces. The first and second lateral member respectively extend through bore holes extending through the first and second concrete pieces and connecting with the respective first and second recesses. A method for attaching the concrete pieces to one another with an attachment piece is also described.

Composite gypsum panels and methods of making thereof are provided. The composite gypsum panels can include one or more gypsum panel substrates having one or more urethane layers applied thereto. The urethane layers can be or can include foamed urethane layers, provided for structural integrity while being lighter than conventional gypsum panels having the same overall thickness. The panel can have a dense coating layer, a foamed coating layer, or both a dense coating layer and a foamed coating layer. The dense coating layers and foamed coating layers can each offer certain advantages over conventional gypsum panels. Additionally, in various aspects, the composite panel includes a water-resistant barrier and increased nail and screw retention.

In one aspect, a gypsum panel includes a gypsum core, a fiberglass mat, and a wetting agent deposited across an entire thickness of the fiberglass mat. The wetting agent is deposited onto the first fiberglass mat in an uncoated state of the fiberglass mat such that the wetting agent penetrates the entire thickness of the fiberglass mat.

The present invention relates to a method for manufacturing prism-shaped panels (1), each comprising through portions (55) made of translucent material adapted to transmit light between two opposite sides of the panel. The method includes arranging a plurality of elements (5, 5′, 5″) made of translucent material in a formwork so that the main direction of development (500) of such elements is parallel to the vertical direction of development (203) of the formwork. The method includes pouring cementitious mortar into said formwork (4) so that said cementitious mortar is distributed between said elements and so as to generate, after the hardening of said cementitious mortar, a substantially prism-shaped semi-finished cementitious mortar product (2) in which said elements made of translucent material are incorporated. The method further includes extracting the semi-finished product from said formwork after the hardening of the cementitious mortar, and cutting the semi-finished product according to cutting planes orthogonal to the longitudinal direction (500) in which the elements incorporated in said semi-finished product develop, so as to obtain prism-shaped parts, each of which corresponds to one of said panels (1).

The invention comprises a product. The product comprises a foam insulating panel, the panel having a first primary surface and an opposite second primary surface, wherein the foam insulating panel defines at least one recessed channel in the first primary surface, the at least one recessed channel being sized and shaped to provide a mold for a structural reinforcing member. The product also comprises a concrete panel formed on the first primary surface and filling the at least one recessed channel so as to provide a structural reinforcing member for the concrete panel. The product further comprises an elongate anchor member in the foam insulating panel and extending from the first primary surface of the foam insulating panel into the concrete panel. A method of making a composite reinforced insulated concrete structure is also disclosed.

Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels.

Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels.

Disclosed herein are low density fiber cement articles, such as fiber cement building panels and sheets, comprised of multiple overlaying fiber cement substrate layers having small and uniform entrained air pockets and low density fillers distributed throughout. The combination of entrained air pockets and low density fillers provide a low density fiber cement matrix with physical and mechanical properties similar to comparable low density fiber cement matrix without entrained air pockets.