| 摘要 |
<p>A base for poles comprises a first block of concrete of predetermined shape, having lateral walls covered with a layer of asbestos cement or plastic, a second smaller block, of predetermined shape, having lateral walls covered with a layer of asbestos cement of plastic and partly submerged into the first block of concrete, and a tubular sleeve embedded vertically in the first concrete block and extending into a hole of predetermined diameter in the first block. The second block and the portion of the tubular sleeve located within the second block serve as a socket for receiving a pole.</p> |
