Concrete paving block

摘要

The paving block (10) has a cube-shaped main body (12) with four sides. One distance element (22.1) is located in the centre of two opposite sides (14, 16). One further side (18) has two distance elements (22.2). The fourth side (20) is free from distance elements. All elements are mainly at right angles to top and base (24, 26) of the block. The distance elements are slightly shorter than the full height of the sides, and have a downward sloping top.