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
Smart Buildings | May 1, 2015
FEMA to require states to evaluate risks posed by climate change
The aim is for states to do a better job planning for natural disasters they are likely to face in a warming world.
Codes and Standards | May 1, 2015
Department of Energy asks for feedback on cost-effectiveness of building energy codes
DOE’s RFI wants input on how to improve methodology on cost assessment.
Codes and Standards | Apr 22, 2015
New York State renews design-build authority
Five state agencies are allowed to use design-build on certain projects.
Codes and Standards | Apr 22, 2015
OSHA’s estimated cost of silica rule said to underestimate impact by $4.5 billion annually
The coalition says that OSHA’s flawed cost estimates point to flaws in the rule, and has urged the federal agency to reconsider its approach.
Codes and Standards | Apr 22, 2015
2016 Seismic Provisions for Structural Steel Buildings draft available for public review
The comment period is open until May 29.
Codes and Standards | Apr 22, 2015
GBCI renamed Green Business Certification Inc.
The name change reflects the organization’s expanded certification and credentialing services.
Multifamily Housing | Apr 16, 2015
Seattle’s size restriction on micro apartments blamed for rise in rents
Seattle’s city planner recently said that the council’s new rules have made small apartments more expensive to build and charged the board with “overreaching” and not giving micro-housing “a fair shake.”
Green | Apr 16, 2015
New version of Building Energy Data Exchange Specification launched
BEDES is a dictionary that facilitates consistent exchange of building characteristics and energy use data between tools and databases in the building energy efficiency sector.
Codes and Standards | Apr 16, 2015
New York tops U.S. cities in walkability
Revitalization pushes Detroit and New Orleans up the rankings
Green | Apr 14, 2015
USGBC will recognize energy and water standards for the Living Building Challenge
This move means that projects achieving the energy and water requirements in Living Building Challenge will be considered as technically equivalent to LEED.
