Interlinking shaped paving stones - have basic equilateral triangular form with each side distorted into complementary concave and convex portions

摘要

The constructional section has a base in the shape of an equilateral triangle, each side of which consists of three segments of length (a, b, c) arranged in a broken line to form a concave and convex shape. The straight segments forming the broken line may be replaced by curved parts forming a concave and convex part with the same length. The section may be in one piece, assembled from four triangles forming a triangle; or assembled from three triangular pieces forming a trapezium; or assembled from two triangular pieces forming a lozenge. At least part of the edge is chamfered.