The worst tornado in Ohio's history hit the town of Xenia on April 2, 1974 at about 4:40 in the afternoon. Wind at velocities exceeding 300 miles per hour tore up about 35 percent of the town, damaged 700 homes, injured 1,300 people and killed 30. Some of the major lessons to be learned from this disaster are: cast-in-place concrete structural frame construction offers highly effective resistance to tornados by providing continuity, mass, and ductility; walls with cladding or masonry infill must be positive and negative wind pressure and should be tied to the structure; traditional wood-frame buildings offer little resistance to tornados. Current building codes do not require tornado-resistant design for anything except nuclear power plants, yet one kind of structure does provide tornado resistance without any increase in cost simply because it inherently has the necessary strength, continuity, and ductility to withstand the overload stresses. This structure is the cast-in-place reinforced concrete frame.