| 摘要 |
The pole (1) has a base plate (3) for mounting on a subsurface at a lower end of the pole. The base plate includes a ring-shaped chamber that is upwardly aligned to the pole and made up of steel. The chamber includes a concave contour in a corner region of the base plate that includes a central ring-shaped opening i.e. elongated hole, in the corner region of the base plate. A longitudinal axis of an elongated hole is approximately diagonal to adjacent edges of the base plate, where the thickness of the base plate is of 10 millimeters.
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