Patent ID: 8366343
Filing Date: 2013-02-05
Classification: E01C,Y02A

Abstract:
1. A block for use in a paving system, comprising: an upper surface; a lower surface generally parallel to and spaced apart from the upper surface; a first, second, third, and fourth side, each side having a height and connecting the upper and the lower surface, wherein a first side is non-planar and a second side, opposite the first side, is non-planar and complementary to the first side such that the first side of the block engages the second side of a second block placed adjacent to the block to restrict lateral movement of the adjacent blocks; a generally rounded upper edge at the connection of each side to the upper surface; a pair of ducts extending through the block between the first side and the second side, wherein at least a portion of each of the first side and the second side slopes toward the rounded upper edge; at least one spacer protruding from at least one of the plurality of sides and extending along at least a portion of the height of the side; and a cavity extending along the length of the lower surface, wherein the cavity allows fluid storage within the block and the volume of the cavity is at least two percent of the volume of the block; and wherein each of the first and second sides includes: a first, central surface, a second surface stepped toward an outer periphery of the block from the first surface, a third surface stepped an equal distance toward the outer periphery along an opposite edge of the first surface, a fourth surface stepped to the outer periphery from the second surface, and a fifth surface stepped to the outer periphery from the third surface.