Two standardized building units--precast slabs and columns--are combined in a patented building system to create offices, schools, hospitals, and other non-residential facilities.


Concrete columns are approximately 8 inches square for buildings up to four stories high. All of the prestressed slabs are 8 inches thick and 8 feet wide, with a standard span of 24 feet. Steel fittings at each of the four slab corners provide anchorage for the 1/4-inch-diameter prestressing wires and a point of attachment for the lifting cables. The metal unit at the same time is part of the mechanical connection between slab and column and creates a bearing plate for transfer of slab load to the column.