| 摘要 |
The invention relates to a building stone for masonry work, comprising lateral joining surfaces (3, 4) and an upper and lower bearing surface (1, 2). At least one notch (5), which is situated at a distance from the horizontal boundary edges of the upper and lower bearing surfaces (1, 2) and extends over only part of the height (h) of the building stone, is cut into each of the lateral joining surfaces (3, 4). |
