flexiblefullpage -
billboard - default
interstitial1 - interstitial
catfish1 - bottom
Currently Reading

USGS updates National Seismic Hazard Maps

USGS updates National Seismic Hazard Maps

Sixteen states deemed ‘high risk’ in latest revision


By BD+C Staff | July 30, 2014
Illustration: USGS
Illustration: USGS

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

Resiliency | Apr 22, 2024

Controversy erupts in Florida over how homes are being rebuilt after Hurricane Ian

The Federal Emergency Management Agency recently sent a letter to officials in Lee County, Florida alleging that hundreds of homes were rebuilt in violation of the agency’s rules following Hurricane Ian. The letter provoked a sharp backlash as homeowners struggle to rebuild following the devastating 2022 storm that destroyed a large swath of the county.

Mass Timber | Apr 22, 2024

British Columbia changing building code to allow mass timber structures of up to 18 stories

The Canadian Province of British Columbia is updating its building code to expand the use of mass timber in building construction. The code will allow for encapsulated mass-timber construction (EMTC) buildings as tall as 18 stories for residential and office buildings, an increase from the previous 12-story limit. 

Standards | Apr 22, 2024

Design guide offers details on rain loads and ponding on roofs

The American Institute of Steel Construction and the Steel Joist Institute recently released a comprehensive roof design guide addressing rain loads and ponding. Design Guide 40, Rain Loads and Ponding provides guidance for designing roof systems to avoid or resist water accumulation and any resulting instability.

Building Materials | Apr 22, 2024

Tacoma, Wash., investigating policy to reuse and recycle building materials

Tacoma, Wash., recently initiated a study to find ways to increase building material reuse through deconstruction and salvage. The city council unanimously voted to direct the city manager to investigate deconstruction options and estimate costs. 

Construction Costs | Apr 16, 2024

How the new prevailing wage calculation will impact construction labor costs

Looking ahead to 2024 and beyond, two pivotal changes in federal construction labor dynamics are likely to exacerbate increasing construction labor costs, according to Gordian's Samuel Giffin.

Codes and Standards | Apr 12, 2024

ICC eliminates building electrification provisions from 2024 update

The International Code Council stripped out provisions from the 2024 update to the International Energy Conservation Code (IECC) that would have included beefed up circuitry for hooking up electric appliances and car chargers.

Urban Planning | Apr 12, 2024

Popular Denver e-bike voucher program aids carbon reduction goals

Denver’s e-bike voucher program that helps citizens pay for e-bikes, a component of the city’s carbon reduction plan, has proven extremely popular with residents. Earlier this year, Denver’s effort to get residents to swap some motor vehicle trips for bike trips ran out of vouchers in less than 10 minutes after the program opened to online applications.

Laboratories | Apr 12, 2024

Life science construction completions will peak this year, then drop off substantially

There will be a record amount of construction completions in the U.S. life science market in 2024, followed by a dramatic drop in 2025, according to CBRE. In 2024, 21.3 million sf of life science space will be completed in the 13 largest U.S. markets. That’s up from 13.9 million sf last year and 5.6 million sf in 2022.

MFPRO+ News | Apr 12, 2024

Legal cannabis has cities grappling with odor complaints

Relaxed pot laws have led to a backlash of complaints linked to the odor emitted from smoking and vaping. To date, 24 states have legalized or decriminalized marijuana and several others have made it available for medicinal use.

Urban Planning | Apr 12, 2024

New York City’s safest year for pedestrians due to concerted effort of street redesign, speed restrictions

In 2023, New York City recorded its safest year for pedestrians since record-keeping began in 1910. In a city of 8.5 million people, 101 deaths were due to vehicles striking pedestrians, less than one-third the number of the early 1990s. New York City ramped up its efforts to make walking and biking safer in 2014 when the city reduced its speed limit to 25 miles per hour.

boombox1 - default
boombox2 -
native1 -

More In Category



Standards

Design guide offers details on rain loads and ponding on roofs

The American Institute of Steel Construction and the Steel Joist Institute recently released a comprehensive roof design guide addressing rain loads and ponding. Design Guide 40, Rain Loads and Ponding provides guidance for designing roof systems to avoid or resist water accumulation and any resulting instability.


halfpage1 -

Most Popular Content

  1. 2021 Giants 400 Report
  2. Top 150 Architecture Firms for 2019
  3. 13 projects that represent the future of affordable housing
  4. Sagrada Familia completion date pushed back due to coronavirus
  5. Top 160 Architecture Firms 2021