Patent ID: 8407959
Filing Date: 2013-04-02
Classification: E04C

Abstract:
1. A reinforced concrete building structure, comprising: (a) a shrinkage compensating concrete slab of a predetermined thickness having a centroid portion surrounded by a peripheral portion, active expansive and shrinkage forces being normally concentrated in the peripheral portion; (b) a first plurality of non-post-tensioned and non-pretension, deformed reinforcing bars embedded within the concrete slab and lying on a plane substantially parallel to major outer and inner faces of the slab, the plane being spread from the outer face of the slab a distance equal to about one third the thickness of the slab, and the plurality of reinforcing bars being restricted to the peripheral portion and being aligned with the expansive and shrinkage forces to elastically restrain the forces and to maximize the efficiency of the reinforcement and to thereby act as an internally developed tension ring said first plurality of reinforcing bars aligned in a first substantially parallel and perpendicular aligned array having a first on-centers-each-way dimension; and (c) a second plurality of non-post-tensioned and non-pretension, deformed reinforcing bars embedded within the concrete slab and lying on the plane, and the second plurality of reinforcing bars being restricted to the centroid portion and being aligned with the expansive and shrinkage forces to elastically restrain the forces and to maximize the efficiency of the reinforcement and to thereby act as an internally developed centroid tension, said second plurality of reinforcing bars aligned in a second substantially parallel and perpendicular aligned array having a second on-centers-each-way dimension, and whereas said first on-centers-each way dimension is equal to about one-third to one-half said second on-centers-each-way dimension.