Abstract: The tornado-safe structure comprises a plurality of column-wall pairs set in a concentric pattern symmetrical about both plane axes on the polygonal foundation of the concrete slab with embedded peripheral bracket assemblies securing the position of a multitude of trapezoidal columns and rectangular wall panels, resulting in polygonal frustum shape of the house or garage where columns are always in the shape of isosceles trapezoid and walls are invariably rectangular therefore manipulating angular relative placement between columns and walls on foundation allow to construe the irregular shape of the house where the vertical wall liners inside the house assure the living space with vertical walls and provide utility space between the liners and outside walls, either in one or two-story dwelling with the roof as picnic area which also provides storage for drinking water and installation of solar panels and in a garage a cultivation space.