| 摘要 |
<p>The pillar is arch shaped with a large radius situated in such a way that it joins the bottom with the top starting from the edge of the lower beam to 1/3 length of the upper beam, where in bottom part the pillar ends with a horizontal beam and in upper part with a pillar mutually parallel to each other. The lower beam is an arch descending sideways starting from its middle part and the upper surface of the lower beam has a protruding edge on the whole perimeter and in lower part has two disks with conical sides. The upper beam has a downward convergent shape in the outbound direction relative to the upper surface starting from the upper end of the arch.</p> |
