The U.S. Geological Service recently released an update of U.S. National Seismic Hazard Maps that reflect the latest analysis of where future earthquakes will occur, how frequently they may occur, and their strength.
While all states have some potential for earthquakes, 42 of the 50 states have a reasonable chance of experiencing damaging ground shaking from an earthquake in the next 50 years. Sixteen states have a relatively high likelihood of experiencing damaging ground shaking. These states have historically experienced earthquakes with a magnitude 6 or greater. The hazard is especially high along the west coast, intermountain west, and in several active regions elsewhere such as near New Madrid, Mo., and near Charleston, S.C.
The eastern U.S. has the potential for larger and more damaging earthquakes than considered in previous maps and assessments. This finding is due to what scientists learned following the magnitude 5.8 earthquakes that struck Virginia in 2011. It was among the largest earthquakes to occur along the east coast in the last century, and indicated that even larger events in the region are possible.
The maps are used in risk analyses calculated using factors such as population levels, building exposure, and building construction practices. These assessments are used for establishing building codes, in the analysis of seismic risk for key structures, and in determining insurance rates. They can also aid emergency preparedness plans, and private property decisions such as re-evaluating one’s real estate and making it more resilient.
(http://www.usgs.gov/blogs/features/usgs_top_story/new-insight-on-the-nations-earthquake-hazards/)
Related Stories
| Feb 20, 2013
ANSI/CRRC Cool Roof Standard has been approved
The Cool Roof Rating Council says the American National Standards Institute has given final approval of its ANSI/CRRC-1-2012 Standard after a two-year public review process.
| Feb 20, 2013
Group of West Coast civil engineers developing building standards for tsunamis
A group of civil engineers from around the western U.S. is developing additions to the building code to address the threat of a tsunami.
| Feb 20, 2013
Higher standards, efficiency programs keys to 40% energy usage reduction in commercial buildings since 1980
Commercial buildings have seen a drop in their energy intensity of more than 40% since 1980, according to a recent report from Bloomberg New Energy Finance and the Business Council for Sustainable Energy.
| Feb 12, 2013
Higher education institutions providing leadership on sustainability
More than 665 U.S. colleges and universities have publicly committed to pursue net-zero carbon emissions.
| Feb 12, 2013
ASHRAE publishes protocols for performance measurement
ASHRAE has published “Performance Measurement Procedures for Commercial Buildings: Best Practices Guide,” a how-to guide for continuously evaluating and improving the performance of commercial buildings throughout their service life.
| Feb 12, 2013
California resolves ADA inconsistencies with 2013 building code
The recently adopted 2013 California Building Code (CBC) revisions bring the state code in line with the federal Americans With Disabilities Act 2010.
| Feb 12, 2013
Bullitt Foundation says Living Building Challenge can only be met after code change
The 50,000 sf Bullitt Center in Seattle is being constructed to be the greenest, most energy-efficient commercial building in the world, and meet the ambitious goals of the Living Building Challenge.
| Feb 12, 2013
Tilt-Up Concrete Assn. offers technical advice on 2012 International Energy Code
The Tilt-Up Concrete Association (TCA) says it can be a major industry resource in helping designers adhere to the International Energy Conservation Code (IECC).
| Feb 8, 2013
WDMA releases national policy agenda for windows, doors, skylights
Document urges a regulatory stance that will support manufacturing, including favorable building codes and tax policy.
| Feb 6, 2013
Green-roofing bills approved by New Jersey's state Assembly
Two bills that would require installation of green and blue roofs on new government buildings received overwhelming approval from the state Assembly in New Jersey.
