Patent attributes
An apparatus, system, and method are disclosed for building a structure that includes a substantially triangular cross-sectional shape having an outside face opposing an inside face. The outside face is connected to the inside face by a first wall, a second wall, and a third wall. Each wall includes a first projection has an outer surface that is continuous with the outside face, a first recess that is positioned opposite and extends away from the first projection, a second projection that has an inner surface that is continuous with the inside face, a second recess that is positioned opposite and extends away from the second projection, and a coupling projection. The coupling projection is positioned opposite at least one of the first recess and the second recess.
