| 摘要 |
Centrally, the building block has a through passage aperture, which at the top and/or beneath has an equal width groove (3) as a free space for accommodation and fixture of holding anchors.The blocks are joined by corresponding raised formations (1) and cavities (2) and support only on seams. Fixed connection to the supporting wall is by means of non-rusting and angled round or flat anchors of steel, which in the area of the upper groove (3) are adhered to a holding iron
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