Abstract: A method for forming hollow concrete structures or shells in which the top, bottom and sides are formed into an integral unitary structure by rotating an assembly of reinforcing members to enable the concrete forming the top, bottom and side to each be finished in a substantially horizontal position with a minimum of forms. Openings for doors and windows may be formed by using suitable blanks that are prepositioned prior to pouring the concrete. Also, suitable end closure members can also be formed in a flat or horizontal position inside the unitary structure for subsequent erection in a vertical position.

Abstract: An apparatus and method for forming hollow concrete structures or shells in which the top, bottom and sides are formed into an integral unitary structure by rotating an assembly of reinforcing members to enable the concrete forming the top, bottom and side to each be finished in a substantially horizontal position with a minimum of forms. Openings for doors and windows may be formed by using suitable blanks that are prepositioned prior to pouring the concrete. Also, suitable end closure members can also be formed in a flat or horizontal position inside the unitary structure for subsequent erection in a vertical position.

Abstract: Apparatus for constructing reinforced concrete modular construction units comprising longitudinally extending multi-sided construction units. Reinforcing bars and mesh are formed into a cage of the desired size and shape for the particular unit. Such cage is mounted on a rotatable shaft which may also be raised and lowered relative to a horizontal bed. Each side of the modular construction unit is in turn positioned in a perimeter form on the bed in which the concrete is poured and finished flat to form each side of the modular unit. After each side has cured a sufficient time to insure its structural integrity the cage is raised and rotated to align another side of the cage with the horizontal bed. The cage is lowered into position adjacent the bed in a suitable form and concrete is poured around the reinforcing structure on that side of the cage to form that side of the wall of the building. Successive sides are similarly formed until the longitudinally extending hollow construction unit has been completed.