Earthquake Risk: Older Concrete Buildings May Fail | Video

Hundreds of thousands of low-rise concrete buildings in the U.S. have not been retrofitted for earthquake safety. These two-story to five-story structures met past building-code standards, but today’s rules require concrete buildings to bend and stretch a bit during an earthquake.  A Georgia Tech lab, funded by NSF,  researches failure modes to refine ways to retrofit quake-resistant structures.

credit : Jacqueline Conciatore, U.S. National Science Foundation