Patent ID: 8341902

Claim:
A multi-story building structure made of prefabricated concrete components, comprising: a pile foundation including a plurality of piles and a plurality of pile caps; a plurality of column components; a plurality of beam components; a plurality of floor components; a plurality of stair components; and a plurality of wall components; wherein each of the plurality of pile caps unites at least two piles to one column component; each column component having opposing sides and a groove on each opposing side for placement of a corresponding side of a wall component; each beam component is connected to a column component, each beam component comprising: a plurality of grooves on a bottom side and a top side of the beam component for placement of a corresponding side of a wall component; and a plurality of holes in a body of each beam component supporting a plumbing and electrical installation; each of the plurality of floor components tie into a beam component, and are made of concrete that are pre-cast with a predetermined shape, size and strength; each of the plurality of stair components tie into a beam component, are made of concrete that are pre-cast with predetermined shape, size and strength and assembled to form stairs; each of the plurality of wall components are attached to a beam component, and are made of concrete that are pre-cast with the a predetermined shape, size and strength; wherein each column component has four L-shaped column wings to support a plurality of beams on each floor, each wing comprises a top portion and a longer bottom portion stepped out from the top portion; wherein the longer bottom portion comprises a plurality of right-angle steel plates welded to a plurality of rebar elements reinforcing the column component, and an anchor hole running vertically through a middle of the bottom portion; the top portion comprises a plurality of right-angle steel plates welded to a plurality of rebar elements reinforcing the column component; and each of the plurality of right-angle steel plates has one or more holes for mounting bolts.