Patent ID: 6854220
Filing Date: 2005-02-15
Classification: E02D

Abstract:
1. A block comprising: (a) an upper planar surface; (b) a lower planar sub-surface; wherein the block is scored to be split into (c) first longitudinal sub-block having an upper planar surface with a longitudinal through-channel and a lower planar surface having opposed outer lugs; (d) second longitudinal sub-block having an upper planar surface with two opposed blind channels opening outwardly, and a lower planar surface having opposed outer lugs; wherein said first sub-block is scored to be further split into: (e) first mini-block having an upper planar surface with a longitudinal through-channel and a lower planar surface having opposed outer lugs; (f) second mini-block having an upper planar surface with a longitudinal through-channel and a lower planar surface having opposed outer lugs.