Concrete paving stone has two teeth at stone grid line whereby one tooth, having perpendicular lower tooth part, tapers perpendicular to side surface above half stone height over chamfer to perpendicular upper tooth part

摘要

The stone (1) has two teeth at stone grid line (4). Only one tooth (2), having perpendicular lower tooth part (5) on stone grid line, tapers perpendicular to side surface (6) above half stone height over chamfer to perpendicular upper tooth part (9). For the tooth or remaining teeth (3), cross section of upper tooth part possesses stone grid line continuously over entire tooth height.