Abstract: Clad steel roiled section suitable for reinforcing concrete is disclosed, which is produced from a bimetallic ingot comprising a basic material containing a group of alloy elements including Si and Al, and a surface layer of a ferritic or austenitic stainless steel containing a group of alloy elements including Cr and Ni, by hot rolling the ingot to an intermediate billet and a rolled section, and subjecting the rolled section to heat treatment. A feature of the reinforcing clad steel rolled products is that the basic material is steel containing, in percent by weight, from 1.0 to 5.0 Si and from 0.1 to 5.0 Al, with the proviso that 3.0≦(Si+Al)≦6.0. The reinforcing clad rolled products exhibit superior mechanical strength and impact toughness, improved corrosion resistance and high bond strength between the layers and with concrete.

Abstract: An apparatus for positioning high-strength cables within a precast, moment resisting frame made up of interconnected columns and beams in which the columns have an outside face provided with an opening and a cable receiving passageway in communication with the opening. The apparatus uniquely includes a cable routing subassembly for conveniently routing the cables from the interior of the moment resisting frame to the opening in the outside faces of the columns. The cable routing subassembly includes a curved tubular member that permits the cable to be inserted into an opening in the outside face of the column either from a first level within the structure that is substantially coplanar with the opening in the outside face of the column, or from a second level within the structure that is below the first level.

Abstract: A device forms metallic cages for structures made of reinforced concrete, the metallic cages providing longitudinal rods associated with transverse stirrups, the transverse stirrups having an at least partly closed shape and being distanced lengthwise. The device includes a supporting frame, and a plurality of housing seatings arranged in a longitudinal line on the supporting frame at least according to a desired interaxis (“i”) or a multiple of the interaxis (“i”), each of the housing seatings cooperating with a relative means to position and retain the stirrups defining their erect position on a substantially vertical plane. A plurality of transverse arms to support the longitudinal rods lie separated from each other on a horizontal plane, the transverse arms being interposed between the housing seatings. Means are provided for relative displacement in height between the transverse arms and the means to position and retain the stirrups.

Abstract: A building panel constructed of a gypsum-cement-catalyst formulation molded in layers and including a rigid stud framework. The layers include surface layers, a fire resistant layer and an insulating layer, as well as reinforcement and building paper. A modified panel is molded in layers with structural strength provided by a grid providing spaced apart wire panels.

Abstract: An apparatus for positioning high-strength cables within a precast, moment resisting frame made up of interconnected columns and beams in which the columns have an outside face provided with an opening and a cable receiving passageway in communication with the opening. The apparatus uniquely includes a cable routing subassembly for conveniently routing the cables from the interior of the moment resisting frame to the opening in the outside faces of the columns. The cable routing subassembly includes a curved tubular member that permits the cable to be inserted into an opening in the outside face of the column either from a first level within the structure that is substantially coplanar with the opening in the outside face of the column, or from a second level within the structure that is below the first level.

Abstract: A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions and related rebar products. The apparatus also includes a core pultrusion station and a cladding forming station for respectively forming core and cladding layers. A shell forming station is positioned downstream of the core and cladding forming stations which unites the first and second shell portions to form an outer shell with the core and cladding layers contained therein. The rebar product includes shell portions which are matably configured to form a disposable outer shell over the core and cladding layers. Related reinforcing composite product forming methods also include the use of a removable outer shell.

Abstract: A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions and related rebar products. The apparatus also includes a core pultrusion station and a cladding forming station for respectively forming core and cladding layers. A shell forming station is positioned downstream of the core and cladding forming stations which unites the first and second shell portions to form an outer shell with the core and cladding layers contained therein. The rebar product includes shell portions which are matably configured to form a disposable outer shell over the core and cladding layers. Related reinforcing composite product forming methods also include the use of a removable outer shell.

Abstract: A method of the present invention comprises providing an attachment device including a first end portion that defines a cavity and an opening intersecting the cavity. The attachment device also includes one or more components of an adhesive material positioned in the cavity and at least one frangible barrier to retain these components in the cavity. The method further includes inserting a free end of a tendon through the opening and into the cavity to break the barrier, rotating the attachment device about the tendon to disperse the one or more components of the adhesive material within the cavity, and coupling the tendon to the attachment device with the adhesive material after rotation.

Abstract: A method for forming metallic reinforcement cages for reinforced concrete includes a step of distribution of the stirrups within specific positioning and retaining means distanced lengthwise, the positioning and retaining means cooperating at least with a portion of the stirrups to clamp them in an erect position on a substantially vertical plane, a step of longitudinal positioning of the longitudinal rods on respective transverse arms, the transverse arms being longitudinally interposed between the means to position and retain the stirrups, a step of reciprocal connection of the longitudinal rods and the stirrups, a step of release of the cage from the positioning and retaining means, and a step of relative displacement in height between the transverse arms and the means to position and retain the stirrups so as to position reciprocally the longitudinal rods and the stirrups at various heights according of the design of the cage to be formed.

Abstract: Disclosed is a formwork panel that is made of an insulating material and incorporates a corrugated reinforcing metal core. Thanks to its reinforcing metal core that is corrugated, the panel is very strong and resistant to pressure whatever be the direction in which such pressure is exerted. Of course, since it is made of an insulating material, especially polyurethane foam, the panel is also heat and/or cold insulating and moisture resistant. Therefore, it can efficiently be used to build up permanent self-supporting formworks into which concrete can be cast to form insulated walls. Also disclosed in a process for the industrial manufacture of such panels in a continuous manner. In this process, the metal cores of the formwork panels are manufactured in the form of a continuous metal core band. The metal core band is supplied onto a main conveyor.

Abstract: A ribbed metal plate for a composite slab that includes a substantially planar plate having an upper surface and a lower surface and a plurality of laterally-spaced, longitudinally-extending ribs that have a keystone profile and wherein the sidewalls are angled toward each other. Ends of the ribs are integrally formed. The rib plate is secured to bearing walls in a structure and concrete is poured on the ribs to form a composite deck. The ends of the ribs extend in the lateral direction to form a composite structure retarding movement of cured concrete in a longitudinal direction. The ribbed plate can also be used in composite beams.

Abstract: A method of manufacturing a concrete deck form panel includes the initial step of cutting an insert within the panel, which may be removed by sliding the insert longitudinally from the panel. A pair of structural members are attached to the longitudinal sides of the insert, and then the insert is returned to the original position within the panel. A series of panels are connected to form a floor for supporting concrete, thereby forming a concrete deck system. In a second embodiment of the invention each form panel is formed by attaching a pair of structural members to longitudinal sides of a central body and then attaching L-shaped members to the structural members. A top plate is mounted to the top of the L-shaped members and the central body to form the integrated form panel.

Abstract: A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions and related rebar products. The apparatus also includes a core pultrusion station and a cladding forming station for respectively forming core and cladding layers. A shell forming station is positioned downstream of the core and cladding forming stations which unites the first and second shell portions to form an outer shell with the core and cladding layers contained therein. The rebar product includes shell portions which are matably configured to form a disposable outer shell over the core and cladding layers. Related reinforcing composite product forming methods also include the use of a removable outer shell.