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
| Nov 20, 2014
ConsensusDocs releases first standard agreement for commissioning contracting
The new standard contract provides a contractual vehicle for owners to save significant money from operation and maintenance costs regarding energy performance.
| Nov 20, 2014
Revamped zoning is transforming several New Jersey downtowns
The zoning policy shift could produce the biggest transformation of North New Jersey’s downtowns since the arrival of malls pulled shoppers away from town centers in the 1960s and 1970s.
| Nov 20, 2014
ANSI approves 2015 Wood-Frame Construction Manual standard
The American Wood Council's 2015 “Wood-Frame Construction Manual for One- and Two-Family Dwellings” (WFCM ) has been approved as an American National Standard by the American National Standards Institute (ANSI).
| Nov 17, 2014
AAMA releases new blast hazard mitigation specifications for vertical fenestration systems
This document provides a guide for manufacturers, architects/specifiers, contractors, and building owners for specifying types of systems and services to meet the requirements of blast hazard mitigation.
| Nov 17, 2014
National Roofing Contractors Assn. offers guide for LEED v4 provisions
National Roofing Contractors Association has released LEED v4: Roofing-related Provisions, a document that examines the roofing-related provisions of LEED v4.
| Nov 14, 2014
Army net-zero initiative moving past pilot stage
The U.S Army's ambitious net-zero initiative has had several successful pilot trials, and planners are prepared to expand the nine-part demonstration field to scores of other Army facilities.
| Nov 14, 2014
Former U.S. Treasury Secretary Paulson works to upgrade China’s building codes
Former U.S. Treasury Secretary Hank Paulson is today focused on making new construction in China more energy efficient by working with leaders to upgrade building codes.
| Nov 14, 2014
California aims for 20% reduction in water consumption by 2020
California’s comprehensive new water use plan makes conservation a priority, reinforcing a 2009 plan to reduce statewide per capita water consumption by 20% by 2020.
| Nov 6, 2014
Demountable structural steel could up the ante on sustainability
Demountable structural steel assemblies would be a greener way to make use of steel in the construction industry than recycling.
K-12 Schools | Nov 6, 2014
New Sandy Hook school features could influence security standards
The design of the new Sandy Hook Elementary School on the site of the 2012 Newtown, Conn., school shooting features enhanced security measures—some subtle and others more prominent.