Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Side-by-side terminus shafts; e.g. – truss
Patent
1980-08-21
1983-02-01
Bell, J. Karl
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Side-by-side terminus shafts; e.g., truss
52657, 52659, E04C 3292
Patent
active
043708439
ABSTRACT:
In a wall construction comprising a pair of top plates, a bottom plate and plurality of parallel joists connected between the top and bottom plates, a wall brace is secured in a plurality of aligned saw kerfs to increase the load carrying capability of the wall structure. The brace includes a substantially U-shaped base portion and a pair of side flanges extending normal to the base portion such that the brace is substantially T-shaped in cross section. The brace is specifically designed so that the moment of inertia about the major axis (an axis aligned in the direction of the base) is greater than the moment of inertia about the minor axis (an axis aligned in the direction of the flanges). The preferred construction of the wall structure assures that failure of the brace upon overloading of the wall structure is caused to occur within the plane of the wall. In the preferred construction, the brace is secured to the wall structure by a pair of nails aligned in guide channels within the U-shaped portion of the base at each end of the brace so that the nails extend through the centroid of the brace and reduce torsional moments which tend to urge the brace out of the saw kerfs when a load is applied to the wall structure.
REFERENCES:
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patent: 3591997 (1971-07-01), Tennison
patent: 3875719 (1975-04-01), Menge
patent: 4157002 (1979-06-01), Adolph
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