Patent ID: 7472520

Claim:
A building block arrangement configured for constructing residential, industrial and commercial structures, comprising a first layer of building blocks including a first row of building blocks and a second row of building blocks and wherein said rows are spaced apart whereby a vertically extending space extends between adjacent side faces of at least a portion of said first and second row building blocks; and a second layer of building blocks engaged with a mating face of at least one of said first layer building blocks, wherein said second layer building blocks each span the vertically extending space in the first layer of building blocks, wherein said second layer building blocks each include a passage channel within an end face thereof and extending between upper and lower faces thereof, wherein a channel provided by the passage channel is at least partially aligned with the vertically extending space, wherein said second layer building blocks each include a stepped portion within at least one of said upper and lower faces thereof intersecting the passage channel such that a horizontally extending space extends between said first and second layers of building blocks and intersects the vertically extending space.