Shattered homes left in the wake of a Maryland super tornado point out both the strengths and shortcomings of modern building codes.On April 28, some of the residents of La Plata, Md., discovered the answer to that question, when a monstrous Category F4 (to F5) tornado cut a 24-mile swath through their town, leveling 344 homes and businesses and killing four people. Photo: Greg PeasePoor attachment of the roof to the frame, variations in roof overhangs, and other small details often made the difference between survival and complete destruction of the home's roof.
