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Continuity tie
| Details |
Inventors: Ashton, Roger Wall; Lucey, Robert Donald; Pryor, John Duncan;
Assignee: Zone Four, LLC (San Leandro, CA)
Primary Examiner: Friedman; Carl D.
Assistant Examiner: Horton; Yvonne M.
Attorney, Agent or Firm: Knobbe, Martens, Olson & Bear LLP
A continuity tie for providing both tension and compression resistance to externally induced movement of building structural members. A central body member is provided with a plurality of bolt mounting apertures in a staggered pattern and a pair of end plates having a rod aperture. One embodiment employs a tubular central body member having a hollow interior; another embodiment employs a generally U-shaped central portion with flanking flanges. Both embodiments can be mounted to building structural members separated by an intervening building structural member, with the continuity ties being secured together by means of a single rod arranged in the rod apertures in each continuity tie and secured in place by means of nuts. The staggered bolt patterns reduce the probability of mounting all bolts in a defect region of a timber building element. The hollow tube embodiment is symmetric and cannot be installed backwards. The rod aperture may be centered or offset from the central axis of the continuity tie. In the hollow tubular embodiment, the rod aperture is offset so that the continuity tie can be mounted with the rod aperture closest to the building structural member to reduce the force couple therebetween or with the rod aperture farthest from the building structural member to provide clearance between the rod and other hardware mounted to the building structural member. |
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DETAILED DESCRIPTION The invention comprises a continuity tie and continuity tie system which is devoid of the above noted disadvantages, which is relatively simple to fabricate and install, and which can be easily retrofitted into existing building structures to improve the continuity system.
From an individual apparatus aspect, the invention comprises a continuity tie for securing together in both tension and compression resistive manner a pair of building structural members having mounting surfaces.
The continuity tie includes a central body member having opposing ends and a plurality of bolt mounting apertures distributed in a predetermined pattern, and a pair of end plates each secured to a different one of the opposing ends.
Each end plate is provided with a rod mounting aperture offset from the center thereof.
In a first embodiment, the central body member is a tubular structure having front and back walls, and the bolt mounting apertures are formed in the front and back walls.
In a second embodiment, the central body member has a center U-shaped region and a pair of flange portions flanking the center U-shaped region, and the bolt mounting apertures are formed in the flanges.
From a system aspect, the invention comprises a continuity tie system for securing together in tension and compression resistive manner a pair of building structural members having surfaces.
The continuity tie system comprises a pair of continuity ties each comprising a central body member having opposing ends and a plurality of bolt mounting apertures distributed in a predetermined pattern, and a pair of end plates each secured to a different one of the opposing ends.
The end plates are provided with a rod mounting aperture either centered or offset from the center thereof.
The continuity tie system further includes a threaded rod received within the rod mounting aperture of each of the pair of continuity ties, with the threaded rod being secured to each continuity tie.
The pair of continuity ties are separated by an intervening building structural member
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