Abstract: A column assembly having a plurality of floor-height columns which are erected vertically, one on top of the other, to define the floors of the building structure to be constructed. Each column comprises a plurality of reinforcement rods which are embedded in the column and extend outwardly from the ends thereof. The rods are cut at precisely equal lengths to extend precisely equal distances from each end of the column. Each rod is threaded in a precise manner with the thread beginning at the same orientation for each rod such that when the columns are stacked end-to-end, the rods are in perfect axial alignment with the thread of one rod continuously leading into the thread of the contiguous rod to which it is aligned. A threaded sleeve is threaded onto the rods extending from the lower end of the upper column and, after stacking of the upper column end-to-end onto a lower column, the threaded sleeve may be threaded onto the axially aligned and contiguous rods extending from the lower column.

Abstract: A column assembly having a plurality of floor-height columns which are erected vertically, one on top of the other, to define the floors of the building structure to be constructed. Each column comprises a plurality of reinforcement rods which are embedded in the column and extend outwardly from the ends thereof. The rods are cut at precisely equal lengths to extend precisely equal distances from each end of the column. Each rod is threaded in a precise manner with the thread beginning at the same orientation for each rod such that when the columns are stacked end-to-end, the rods are in perfect axial alignment with the thread of one rod continuously leading into the thread of the contiguous rod to which it is aligned. A threaded sleeve is threaded onto the rods extending from the lower end of the upper column and, after stacking of the upper column end-to-end onto a lower column, the threaded sleeve may be threaded onto the axially aligned and contiguous rods extending from the lower column.