A rebar support system used in the reinforcement of concrete structures is disclosed, comprising a rebar support tower and a rebar support base, individually capable of holding rebar members at a predefined height within a range of possible heights, the two further capable of acting together in tower-base duplex fashion in the formation of multilevel rebar grids. The rebar tower has four legs between which there are defined two intersecting passages, the legs being open-ended at the bottom and forming bidirectional arches at the top of said intersecting passages, said rebar tower further having a saddle foil cation at its apex. The rebar tower provides a tapered and angled foot profile at the bottom of each leg to minimize the area of contact when used with a concrete form, thereby reducing rebar support footprints after form removal. The rebar base comprises a platform with centrally rising bidirectional saddle formations, the intersecting passages and saddle formations of tower and base providing means for receiving the intersecting segments of rebars which are normal to each other. Locking insert hooks and guide tabs incorporated in the rebar base, and hook receptacles, guide ridges and restraining surfaces incorporated in the rebar tower provide complementary means for the attachment of the two structures to form a rigid, yet detachable tower-base assembly in multiple rebar grid configurations. The rebar base provides a stable support means when used individually or in tower-base assemblies on granular surfaces, such as sand or gravel beds.

A rebar support system used in the reinforcement of concrete structures is disclosed, comprising a rebar support tower and a rebar support base, individually capable of holding rebar members at a predefined height within a range of possible heights, the two further capable of acting together in tower-base duplex fashion in the formation of multilevel rebar grids. The rebar tower has four legs between which there are defined two intersecting passages, the legs being open-ended at the bottom and forming bidirectional arches at the top of said intersecting passages, said rebar tower further having a saddle formation at its apex. The rebar tower provides a tapered and angled foot profile at the bottom of each leg to minimize the area of contact when used with a concrete form, thereby reducing rebar support footprints after form removal. The rebar base comprises a platform with centrally rising bidirectional saddle formations, the intersecting passages and saddle formations of tower and base providing means for receiving the intersecting segments of rebars which are normal to each other. Locking insert hooks and guide tabs incorporated in the rebar base, and hook receptacles, guide ridges and restraining surfaces incorporated in the rebar tower provide complementary means for the attachment of the two structures to form a rigid, yet detachable tower-base assembly in multiple rebar grid configurations. The rebar base provides a stable support means when used individually or in tower-base assemblies on granular surfaces, such as sand or gravel beds.

Disclosed is an apparatus to reduce the amount of time required to assemble an array of construction reinforcing bars wherein a consistent gap is present between the reinforcing bars and the height of the exposed end of the reinforcing bars is substantially identical while simultaneously covering the exposed ends of the reinforcing bars to prevent injuries to nearby individuals that may come into contact with the exposed ends of the reinforcing bars.

A stay-in-place footing form assembly includes a plurality of inner form boards serially aligned and joined by inner joining brackets, a plurality of outer form boards serially aligned and joined by outer joining brackets, a plurality of lower spacing rails, each disposed between and connecting base brackets in the inner and outer joining brackets aligned laterally, and a plurality of upper spacing rails, each disposed between and connecting top brackets in the inner and outer joining brackets aligned laterally. The lower spacing rails include first rebar receptacle(s) for seating horizontal rebars on the rails, and the upper spacing rails include second rebar receptacle(s) for holding vertical dowel rebars therein. The inner and outer form boards are insulation boards that have an ability of absorbing lateral forces of earthquakes exerted to a concrete footing formed in the stay-in-place footing form, and an ability of insulating the concrete footing from surrounding temperatures.

A concrete depression form system and method having a rail that is readily removable from sacrificial support towers after the concrete has sufficiently cured, leaving a slab having an elevated interior slab surface and a depressed or lower exterior slab surface, the support towers being structured such that concrete flow is only minimally impeded and such that no portion of the support towers extends outwardly from the slab surfaces.

The present invention relates to bars for load transmission, which if anchored in concrete slabs create a support between them, forming semi-rigid joints and accompanying the differential settlements of the foundation bed, as a result of the rotation in the vertical direction about the joint axis, and transmitting the load from a slab to the other, ensuring a perfect leveling of the surface thereof when occurring elastic movements of the foundations, and allowing the possibility of removing the slabs at any time and reuse them again, due to the telescopic effect of the bars. The telescopic function of the bar which allows its support between slabs created a new possibility of obtaining prefabricated floorings of easy manufacture and assembly in situ, creating a new concept in the construction of roads, ports, airports, railways, industrial areas, etc., which distinguishes the present invention from the closest state of the art.

The present invention relates to bars for load transmission, which if anchored in concrete slabs create a support between them, forming semi-rigid joints and accompanying the differential settlements of the foundation bed, as a result of the rotation in the vertical direction about the joint axis, and transmitting the load from a slab to the other, ensuring a perfect leveling of the surface thereof when occurring elastic movements of the foundations, and allowing the possibility of removing the slabs at any time and reuse them again, due to the telescopic effect of the bars. The telescopic function of the bar which allows its support between slabs created a new possibility of obtaining prefabricated floorings of easy manufacture and assembly in situ, creating a new concept in the construction of roads, ports, airports, railways, industrial areas, etc., which distinguishes the present invention from the closest state of the art.

A stay-in-place footing form assembly includes a plurality of inner form boards serially aligned and joined by inner joining brackets, a plurality of outer form boards serially aligned and joined by outer joining brackets, a plurality of lower spacing rails, each disposed between and connecting base brackets in the inner and outer joining brackets aligned laterally, and a plurality of upper spacing rails, each disposed between and connecting top brackets in the inner and outer joining brackets aligned laterally. The lower spacing rails include first rebar receptacle(s) for seating horizontal rebars on the rails, and the upper spacing rails include second rebar receptacle(s) for holding vertical dowel rebars therein. The inner and outer form boards are insulation boards that have an ability of absorbing lateral forces of earthquakes exerted to a concrete footing formed in the stay-in-place footing form, and an ability of insulating the concrete footing from surrounding temperatures.

A rebar positioning device has a generally planer shape and includes top and bottom cross bars and left and right side bars forming a generally rectangular profile. Upwardly extending upper left, upper right, lower left and lower right channels are formed in upper and lower portions of the device, each channel sized to receive a length of rebar to hold and position the rebar in the interior openings of a row of masonry blocks stacked to form a wall.

A device for forming, reinforcing, joint sealing and edge protecting of a concrete slab panel, wherein the concrete slab panel having a volume, a length, a width, and a surface. The device comprising of an elongated post having a body, a top end and a bottom end with a plurality of elongated grooves extending along the body; a mounting frame has a length, a width and a thickness. The mounting frames having a connecting means to connect the mounting frame to the posts. The present invention eliminates the needs for saw-cut lines for crack inducement and acts as a joint sealer for the concrete slab to relieve the tensile stresses.