| 摘要 |
<p>The concrete paving stone (10) is easily assembled, produced and handled, because of its size and weight. The paving stone is wide enough for a cart or wheelbarrown. One or two opposite edges are upturned to give it a cross-section in the form of a U or L. Each paving stone (10) is placed alongside the next on a sand foundation which has been previously compacted. When in place, the paving stones from a path with two side rims, making it suitable for use in greenhouses or between flowerbeds. The paving stones can be placed upside down, with the rims pointing downwards, to cover pipes. Where only one rim is needed, the L-shaped from can be used.</p> |
