Static structures (e.g. – buildings) – With component having discrete prestressing means – Beam – girder – or truss construction
Patent
1996-08-22
1998-09-15
Safavi, Michael
Static structures (e.g., buildings)
With component having discrete prestressing means
Beam, girder, or truss construction
5222313, 5222314, E04C 310
Patent
active
058062599
ABSTRACT:
An apparatus for reinforcing a structural member such as a beam or joist comprises a cable which is secured under tension to anchor brackets mounted on opposite ends of a beam. The cable extends across a face of the beam and across and in engagement with a bearing bracket mounted to the face of the beam intermediate its ends. The cable engages a cable engaging member on the bearing bracket and bears upward thereon. The cable thereby bears a portion of the load applied to the beam intermediate its ends, resisting distortion of the beam and providing increased recovery ability. First and second tension adjustment mechanisms are securable to the beam to engage the cable on opposite sides of the bearing bracket respectively to permit the tension on the cable to be adjusted. At least one end of the cable may be secured to an adjustable anchor bolt on the respective anchor bracket to further permit adjustment of the tension on the cable. A preferred embodiment includes an upper and a lower cable extending under tension between anchor brackets and across and in engagement with the bearing bracket.
REFERENCES:
patent: 2856644 (1958-10-01), Dunham
patent: 3427773 (1969-02-01), Kandall
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