Breakaway utility pole shear base structure

Details Breakaway utility pole shear base structure Breakaway utility pole shear base structure

1988-04-29

1989-03-21

Scherbel, David A.

Static structures (e.g., buildings)

Frangible section or means

52297, 403 2, E02D 2742

Patent

active

048131997

ABSTRACT:
A breakaway utility pole structure having a tubular base (11) anchored in the ground substantially at ground level and adapted to telescopically secure the bottom end portion of a pole (9), the base (11) having a circumferential shear groove (20) adjacent to its bottom end, and the base being secured in the base by adhesive material (12) and by bolts (21) spaced above the shear groove (20), the shear groove is adapted to cause failure of the base when the pole is subjected to horizontal impact at a predetermined distance above ground level from a vehicle of predetermined weight moving horizontally at a predetermined minimum speed.

REFERENCES:
patent: 3499630 (1970-03-01), Dashio
patent: 3630474 (1971-12-01), Minor
patent: 3820906 (1974-06-01), Katt
patent: 4070837 (1978-01-01), Sato

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