Supports – With component frangible or deformable on impact or overload
Patent
1996-04-01
1998-08-18
Safavi, Michael
Supports
With component frangible or deformable on impact or overload
52 98, 248900, 403 2, E01F 9018
Patent
active
057949107
ABSTRACT:
A sign post is formed of a lower support component for anchoring within terrain, leaving an exposed upper portion above the surface of such terrain. The support component includes an array of longitudinally regularly spaced apertures. An upper support component formed having the same cross-sectional configuration and regularly spaced apertures is attached to the lower component at the exposed portion through the utilization of a splicing technique. The splice is formed as a stress transfer bar having two strategically positioned bores therein. These bores are spaced apart longitudinally a distance representing an even integer of the upper and lower component aperture spacing. Breakaway bolts are positioned through one of the components and into and through the stress transfer bar, and then the second component is attached with nuts being positioned and tightened over the bolts as they extend through the stress transfer bar. This assures that the bolts will be properly longitudinally spaced such that the sign will properly break away when struck by an errant motor vehicle, but the sign will withstand requisite wind loadings.
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