Outline
Paver block (1) having a tread surface (2), a base surface (3) extending parallelly thereto, four side surfaces (4,5,6,7), and spacers (8,9) arranged on at least two of its side surfaces (4,5,6,7), wherein a first spacer member (8) is arranged on one of two adjacent side surfaces (5,6,7), the first spacer member (8) having a width (S) extending perpendicularly to the tread surface (2), a second spacer member (9) is arranged on the other side surface (5,6,7) of said two adjacent side surfaces (5,6,7), and the second spacer member (9) is a pair of ribs extending along a line perpendicular to the tread surface (2), a distance (L) between the ribs of said pair of ribs being at least equal to the width (S) of the first spacer member (8), and the first spacer member (8) being arranged on the side surface (4,5,6,7) directly along a plane parallel to the tread surface (2) and intersecting the distance (L) between the members of said pair of ribs of the second spacer member (9) at half of said distance (L), characterized in that the first spacer member (8) is a longitudinal rib having its length (h) extending parallel to the tread surface (2), the first spacer member being flush with the plane of the side surface (4) opposite to the side surface (7) comprising the second spacer member (9).