Moulded concrete block for landscaping

摘要

The concrete block encloses an air space, may or may not have a base, and has teeth with corresponding depressions. The corners (1,2) of the block are mirrored in at least one axis (3) by at least two opposing corners (4,5). The corners are rounded off (10), and are equipped, along with other regions (14,15,16,17,18), with rigid teeth (28) and depressions (29) formed in groups. The teeth and depressions of one group lie opposite those of another in rotational symmetry, and the teeth and depressions all have the same curved construction.