The Oregon Resilience Plan – Critical and Essential Buildings – February 2013 89 <br /> <br /> <br />The construction types anticipated by Hazus statistics are primarily steel and concrete prior to 1950, <br />with about 20 percent of the inventory being shared between wood and unreinforced masonry (URM). <br />These construction types change for construction periods between 1950 and 1970. The post-1970 <br />distribution still anticipates concrete and steel, as well as some wood, but much more prevalent is <br />reinforced concrete masonry (CMU), which is now estimated to comprise about 25 percent of the <br />building stock. <br /> <br />Figure 4.7: Several states have rehabilitated their state capitol buildings. The Utah State Capitol was seismically retrofitted with base <br />isolation to protect visitors and occupants and preserve historic fabric in the building. (Source: State of Utah) <br />Target State of Recovery <br />The target states of recovery for these facilities will vary depending on the facility. An average target <br />state was estimated to be 30 days, although the task group recognized that some buildings may need to <br />be immediately serviceable (correctional institutions, for instance), while other critical functions may <br />not be immediately needed and could wait several weeks before coming back into service. It will be <br />necessary for the state and local governments to determine which functions are critical for resilience <br />and then inventory and evaluate the associated facilities, before eventually prioritizing and upgrading <br />the deficient structures.