A radical innovation in modern motel building, featuring a roof of site precast hyperbolic paraboloid concrete shells, has won the national recognition for the architect who made this novel use of concrete in a 175,000 dollar hotel in Warm Mineral Springs, Florida. This exciting use of concrete, although not altogether unique in the annals of American architecture, does involve an entirely new method of employing concrete roof shells, according to the nationally-renowned architect. The structural system consists of a series of square concrete hyperbolic paraboloids in two heights and measuring 14 feet 5 inches on a side. All precasting was done at the job site. Since the supporting precast, prestressed columns occur in the soundproof partitions between units, different ceiling levels result, defining use areas, with lower surfaces over sleeping and dining areas, higher planes above the living areas. Each roof slab is cast in the form of an inverted peak, resembling from the top a square cake which has fallen in the middle. To form the roof, these 5 ton slabs were crane hoisted and welded atop the concrete columns in their peak down position. Rain drains down to the center of the slabs and runs through a hole in the center of the supporting column to a central drainage system. The upright columns are built on two levels, with every other one either several inches lower or higher than the adjacent column. This means the roof slabs overlap slightly, and the space between is filled with translucent plastic skylights.