(For part I of this series, click here) Designing for decay and drift Designing our house to survive disasters (natural or otherwise) is important, and is something building codes and design standards are well-equipped to address - we can get significant survivability simply by designing our house to the standard that things like power plants and tornado safe rooms must meet. But these sorts of events account for a relatively small fraction of homes that get removed from the building stock. Looking at this graph from