REINFORCED CONCRETE STRUCTURAL UNIT Russian patent published in 2002 - IPC

FIELD: construction industry, reinforced concrete bent structures ( collar beams ) of type of beam or girder which are embedded with metal reinforcement to respond to tensile stress. SUBSTANCE: bent sheet perforated reinforcement of closed box-shaped section with sheet perforated insert placed along diagonal along path of major tensile stress is positioned in section of collar beam near supports. Closed form of sheet reinforcement produces effect of casing for concrete, raising its strength. Sheet insert both responds to tensile stress and secures resistance of side surfaces of sheet reinforcement to bulging from plane and enhances torsional rigidity of sections near supports. EFFECT: raised strength of sections of collar beam near supports. 2 dwg