A stripping lifting insert is provided for precast insulated panels having an insulating material layer between opposing wythes, the insulating material layer, wythes, and precast insulated panel having respective widths. The stripping lifting insert includes an elongated connecting shaft having a shaft axis. First and second spaced apart wythe engagement members are connected to the connecting shaft in spaced apart relation to each other. Each wythe engagement member includes a hub and a plurality of three or more protrusions connected to and emanating from hub. Each of the protrusions extending radially outward from the shaft axis. The wythe engagement members have a height less than the width of the wythes, whereby each wythe engagement member can be completely embedded in a respective wythe of the precast insulated panel. A precast insulated panel and a method of making a precast insulated panel are also disclosed.

An oval cover member is formed of high density polyethylene and sized to cover a pocket in which a lift member is secured to a pre-cast concrete structural member. The cover member can be secured to the lift member by a cable tie threaded through the opening of a first protrusion, back through a smaller opening in a second protrusion and pulled to draw the cover member tightly against the concrete structural member. The opposing protrusions form a valley therebetween for the positioning of the lift member. The size of the smaller opening in the second protrusion is too small for the passage of the head of the cable tie, enabling the cover member to be tightly secured to the lift member. A peripheral channel in the cover member can receive a gasket or adhesive that can seal the cover member against the surface of the concrete structural member.

A stripping lifting insert is provided for precast insulated panels having an insulating material layer between opposing wythes, the insulating material layer, wythes, and precast insulated panel having respective widths. The stripping lifting insert includes an elongated connecting shaft having a shaft axis. First and second spaced apart wythe engagement members are connected to the connecting shaft in spaced apart relation to each other. Each wythe engagement member includes a hub and a plurality of three or more protrusions connected to and emanating from hub. Each of the protrusions extending radially outward from the shaft axis. The wythe engagement members have a height less than the width of the wythes, whereby each wythe engagement member can be completely embedded in a respective wythe of the precast insulated panel. A precast insulated panel and a method of making a precast insulated panel are also disclosed.

A lifting system is provided that prevents a thermal bridge between concrete layers of a precast concrete structure. In some precast concrete panels, an insulation layer is provided between concrete layers. Lifting systems of the present invention allow lifting forces from a hoisting system to be transferred to the concrete panels without creating a thermal bridge between the concrete layers, and thus, reducing the effectiveness of the insulation layer. In some embodiments, a multi-plate configuration allows a central plate to distribute a lifting force to the concrete layers and then rotate away to prevent a thermal bridge between concrete layers.

A lifting anchor for embedment into a concrete component, the anchor having a head for releasable engagement with lifting equipment, and at least one leg extending from the head, the leg being profiled so as to lock into the surrounding concrete, wherein the profiling is formed by a series of formations arranged along at least a face and adjacent edge of the leg.

A hollow prefabricated masonry wall panel is made at a fabrication site and is configured for transportation to a build site. The hollow prefabricated wall panel has a base row and an upper row formed of hollow blocks. A slit is formed in the top of each of the two side walls of the hollow blocks of the base row and upper row, the slit having a width no larger than 20% a width of a side wall. Provisional reinforcement is provided within each slit with a bonding material, a size of the slit and the provisional reinforcement configured to provide tensile strength during transportation of the hollow prefabricated wall panel from the fabrication site to the build site. At least one mid-row is laid between the base row and upper row so the hollow cavities are aligned to preserve hollow wall cavities that can accept code required reinforcement once transported to the build site.

An oval cover member is formed of high density polyethylene and sized to cover a pocket in which a lift member is secured to a pre-cast concrete structural member. The cover member can be secured to the lift member by a cable tie threaded through the opening of a first protrusion, back through a smaller opening in a second protrusion and pulled to draw the cover member tightly against the concrete structural member. The opposing protrusions form a valley therebetween for the positioning of the lift member. The size of the smaller opening in the second protrusion is too small for the passage of the head of the cable tie, enabling the cover member to be tightly secured to the lift member. A peripheral channel in the cover member can receive a gasket or adhesive that can seal the cover member against the surface of the concrete structural member.

An edge lift anchor for embedment into a concrete panel, the anchor having a head of generally plate-like form for releasable attachment with lifting equipment, and at least one leg extending from the head, for locking into the surrounding concrete, the head having an eye for receiving a locking bolt of a lifting clutch in the form of a ring clutch, the head having an upper edge engageable by the body of the ring clutch when the clutch body is inclined at the commencement of lifting a cast panel from the horizontal configuration in which it is cast to a generally vertical configuration, wherein the width of the head is such that engagement between the clutch body and the edge of the head at the commencement of lifting from a horizontal configuration is at a sufficient distance from the end of the head that any deformation of the edge of the head caused by engagement with the clutch body under the applied lifting load will be wholly contained within the width of the head.

A universal slab removal device for picking up and moving large slabs of cement, concrete or any other types of heavy solid material using any type of lifting machine. The universal slab removal device includes an anchor assembly including an elongated anchor member adapted to be fastened to a slab of heavy solid material such as cement, pavement, and stone and be lifted with a lifting apparatus such as a fork lift and the like.

A lifting system is provided that prevents a thermal bridge between concrete layers of a precast concrete structure. In some precast concrete panels, an insulation layer is provided between concrete layers. Lifting systems of the present invention allow lifting forces from a hoisting system to be transferred to the concrete panels without creating a thermal bridge between the concrete layers, and thus, reducing the effectiveness of the insulation layer. In some embodiments, a multi-plate configuration allows a central plate to distribute a lifting force to the concrete layers and then rotate away to prevent a thermal bridge between concrete layers.