A rebar positioning device with opposite ends for positioning adjacent to a form face of at least one form panel may include a support rod having opposite ends and an outer surface, with at least a portion of the outer surface being threaded. At least one bar clip may be movably mounted on the support rod. An orientation of the at least one bar clip on the support rod is adjustable, and a position of the at least one bar clip on the support rod is adjustable.

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.

The present invention provides a prefabricated floor panel system used in stay in place formwork for pouring concrete floors. The prefabricated floor panel system includes a top and has walls depending downwardly at an upper lateral edge of the wall from each outermost lateral edge of the top, a lower lateral edge of each wall having a ledge extending outwardly away from the top. A first ledge of one prefabricated floor panel system is capable of overlying another ledge of an adjacent prefabricated floor panel system to allow for the one prefabricated floor panel system to be joined to the adjacent prefabricated floor panel system to form a channel. The first ledge of the prefabricated floor panel system is provided with a reinforcing bar spaced away from the wall and the first ledge of the prefabricated floor panel system, the reinforcing bar being supported by a plurality of a reinforcing bar chairs spaced along the length of the prefabricated panel system, the reinforcing bar chairs being attached to the first ledge or wall such that there are no significant interfering structures projecting from a lower surface of the first ledge. The other ledge of the prefabricated floor panel system is free of interfering structures above the ledge to allow the first ledge of one prefabricated floor panel system to overlie the other ledge of an adjacent prefabricated floor panel system to allow for the one prefabricated floor panel system to be joined to the adjacent prefabricated floor panel system to form a channel.

A central rod passes through a form-board. A first disc is attached to a first end of the central rod. The first disc abuts to a first side the form-board. A second disc is attached to the central rod between the first end of the central rod and a second end of the central rod. The second disc abut to a second side of the form-board opposite the first side. A third disc, attached the second end of the central rod, is configured to receive a rebar rod.

A rebar chair having rebar seats in the top, bottom, left side, right side, first end, and second end. The rebar chair has a first distance between the sides, a second distance between the top and bottom, and a third distance between the ends. The rebar seat in the top has a first height, the rebar seat in the left side has a second height, and the rebar seat in the first end has a third height so that the rebar chair can provide at least three different support heights depending on the orientation. The bottom rebar seat may have the first height, the right side rebar seat may have the second height, and the second end rebar seat may have the third height. Each side includes at least one an engagement feature that enables the rebar chair to be stacked with and/or connected to an adjacent rebar chair.

A wind turbine foundation comprising a concrete support slab having a horizontal rebar grid therein, a concrete pedestal integral with the support slab and having vertical post tensioning elements therein and a plurality of concrete ribs on top of and integral with the support slab and integral with the pedestal, the ribs having rebar therein and extend outwardly from the pedestal, the pedestal, slab and ribs are connected to each other to form a monolithic foundation. The foundation design reduces the weight and volume of materials used, reduces cost, and improves heat dissipation conditions during construction by having a small ratio of concrete mass to surface area thus eliminating the risk of thermal cracking due to heat of hydration.

The invention comprises a product. The product comprises a first removable concrete form having a concrete forming face and a first insulating panel insert having a first primary surface and an opposite second primary surface, wherein the second primary surface of the first insulating panel insert contacts the concrete forming face of the first removable concrete form. The product also comprises an elongate anchor member having an enlarged portion and an elongate portion, the elongate portion having a first end and an opposite second end, wherein the enlarged portion is disposed adjacent the first end and contacts the second primary surface of the first insulating panel insert and wherein the elongate portion extends through the first insulating panel insert and extends outwardly from the first primary surface of the first insulating panel insert. A method of using a removable insulated concrete form system is also disclosed.

Systems for reinforcement of structural elements such as piles, posts, pillars, and pipes are disclosed. The present invention features reinforced structural elements. The reinforced structural elements may include a sleeve structure positioned around a length of the structural element such that there is a chamber between the structural element and the sleeve structure. This chamber may be filled with concrete or another core filler material so as to reinforce the structural element. The sleeve structures of the present invention may be formed by the assembly of multiple staggered segmented layers of coupled reinforcing shells such as rigid, semi-rigid, or flexible fiber-reinforced shells.

Rebar-based support assemblies that can be fabricated without the need for on-site welding. The assemblies include a number of differing sized and shaped crimps used in place of welds to provide rebar assembly-to-rebar assembly connections. Each crimp mechanically couples two or three pieces of rebar together, such as a border bar of one rebar assembly to a border bar of an adjacent rebar assembly. Each crimp includes a body with two or more arcuate recessed surfaces each for receiving a piece of rebar. In a first configuration of the crimp, a pair of spaced-apart arms (or extending members) extend from the body and define an opening through which the rebar is passed and set into the recessed surfaces. A deformation force is applied upon the two arms to deform the body into a second configuration with the arms in abutting contact or nearly so at an outer tip or end.

A spacer device includes a spacer having a n aperture through a bottom-side that sits against the surface of the form. The aperture is configured for providing a threaded-fixture having internal-threads, the threaded-fixture including a securing assembly insertable into the threaded-fixture. The securing assembly includes external-threads for mating with the internal-threads of the threaded-fixture. The spacer device is useful for providing a novel securing means for securing with reinforcing steel in a spaced relation for in a concrete structure or other such structure.