Patent ID: 9139971
Filing Date: 2015-09-22
Classification: E02B,E03F

Abstract:
1. An aggregate replacement device comprising: a structure formed as an open scaffolding comprising a proximal end having a face, a distal end having a face, and at least four faces extending between said face of said proximal end and said face of said distal end, wherein said at least four faces further comprises a plurality of first openings; wherein all of said proximal end having a face, said distal end having a face and said at least four faces are flat; at least one second opening formed in said proximal end having a face and said distal end having a face; wherein said at least one second opening further comprises a U shaped cross-section; wherein said U shaped cross-section of said at least one second opening further comprises at least one protrusion for retaining said at least one pipe in said at least one second opening; at least one pipe extending transversely through said at least one second opening; and wherein said at least one pipe intersects said proximal end having a face and said distal end having a face at the center of said proximal end having a face and said distal end having a face.