Patent ID: 8474218

Claim:
A modular interlocking wall system comprising: one or more laminar panels, each said panel having a paper product core, two cementitious skins, horizontal top and bottom edges and two vertical side edges, said paper product core sandwiched between said two skins and formed of a continuous series of cells having walls extending perpendicular to said skins, said skins each having opposite outer surfaces defining a panel width, and said side edges each having a side groove formed between said skins, two vertical posts each having a top end, a bottom portion and a plurality of radially extending flanges including an interlocking flange, said flanges forming a perpendicularly shaped cross-section, said interlocking flange of one of said two posts received in each of the side grooves of the side edges of said one or more panels, the bottom portion of each of said vertical posts extending below the bottom edge of said one or more panels for anchoring in a ground surface, a top rail having a bottom surface including a top channel, said top channel having a top channel width slightly greater than said panel width, said horizontal top edge of one of said one or more panels received in said top channel for reinforcing said one or more panels, the top ends of each of said two vertical posts abutting the bottom surface of said top rail, a bottom rail having a top surface and two opposite ends, said top surface including a bottom channel, said bottom channel having a bottom channel width slightly greater than said panel width, said horizontal bottom edge of one of said one or more panels received in said bottom channel for supporting said one or more panels, each end having a notch, one of the plurality of flanges of each of said two vertical posts received in one of said notches, wherein said one or more laminar panels are interlocked between said two vertical posts and reinforced by said top and bottom rails, thereby forming a wall.