Patent ID: 8627620

Claim:
A modular building system comprising: multiple portable pre-cast modules, wherein each of the multiple modules comprises: a structural steel mesh defining a C-shaped or square-bracket shaped cross-section; a cementitious mortar encasing the structural steel mesh so as to define a monolithic module body having a plurality of spaced-apart recesses located along one or more edges of the module body, the structural steel mesh comprising one or more elongated bars that extend generally parallel to and inward from said one or more edges, the elongated bar having at least an encased portion that is encased in the cementitious mortar that defines the monolithic module body and at least an exposed portion that is exposed and traverses said recesses from one edge of the recess to another edge of the recess, the module body having a generally planar wall portion that extends substantially along a first plane, the module body having a pair of fins on proximal and distal ends of the wall portion, each of the fins extending generally perpendicular to, and outward from, the wall portion along a second plane generally perpendicular to the first plane such that the module body has a C-shaped or square-bracket shaped cross-section along a third plane perpendicular to the first and second planes corresponding to the shape of the structural steel mesh; and one or more connectors, said connectors configured for insertion between aligned recesses of adjacent modules and configured to be coupled to the exposed portion of the one or more elongated bars in said aligned recesses to fixedly couple the adjacent modules when the modules are placed in contact with each other along at least one of their respective edges so that the recesses on said edges align with each other and the modules are in contact with each other.