Patent ID: 8434280

Claim:
A modular building unit, comprising: a first end comprising an outermost planar surface; a second end comprising an outermost planar surface; a first plate assembly embedded in the first end, the first plate assembly comprising a first plate positioned so as to be flush with the outermost planar surface of the first end, the first plate defining a threaded hole, a plurality of anchoring rods coupled to the first plate and embedded in the first end, and a threaded rod comprising a proximal end and a distal end, the threaded rod being mated with the threaded hole, the distal end extending out of the first end and configured to be received in an unthreaded hole of another modular building unit, and the proximal end extending at least partially into the first end; and a second plate assembly embedded in the second end, the second plate assembly comprising a second plate positioned so as to be flush with the outermost planar surface of the second end, the second plate defining an unthreaded hole configured to receive a threaded rod from another modular building unit, and a plurality of anchoring rods coupled to the second plate and embedded in the second end.