Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1991-01-14
1993-06-15
Friedman, Carl D.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
52426, E04H 1200
Patent
active
052188094
ABSTRACT:
In a poured concrete or masonry structure having reinforcing bars, an improvement is provided whereby a series of parallel, steel reinforcing frames are positioned at right angles to the reinforcing bars. Each frame comprises a prefabricated weldment of mutually parallel longitudinal rods and mutually parallel transverse rods forming a network of rectangular openings. The frame acts as a reinforcing perimeter in contact with the reinforcing bars to absorb shear forces and resist buckling. In the case of a poured concrete wall structure, the ends of the transverse rods may be bent upwardly into hooks for improved weld strength and for hanging further reinforcing materials. The invention improves the ductility of structures such as walls, columns and beams thereby providing an improvement in resistance to dynamic loads. Larger preassembled reinforcing frames may be lifted into place thereby reducing construction costs. Moreover, the reinforcing frames comprise, along with the reinforcing bars, an overall reinforcing framework that provides access passageways for inserting concrete compacting equipment within the structure.
REFERENCES:
patent: 2815656 (1957-12-01), Klein et al.
patent: 3238684 (1966-03-01), Wood
patent: 4454702 (1984-06-01), Bonilla-Lugo et al.
Friedman Carl D.
Smith Creighton
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