| 摘要 |
A C-type underbracing has developed for installing on a lower portion of a utility pole for firmly anchoring the utility pole. The underbracing is comprised of: a body (12) formed a half-annular or C-shape with a rectangular cross section; a pair of the enlarged end portions (11, 11') having larger rectangular cross section than that of the body; a pair of the conjunction (17, 17') for connecting between the body and the enlarged end portions; a hook receiving hole (13) horizontally through a center of the body, and a pair of nut mounting portions (16, 16') formed flat surfaces for seating the nuts and a pair of slit-shaped holes (14, 14') for horizontally inserting U-bolts (20) through the body portion, the nut mounting portions and slit-shaped holes disposed both sides of said hook receiving hole, and an earth plate (30) made of conductive material is attached to the bottom surface of the body.
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