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08/08/2011

Increase in Storm Damage Means More Stringent Building Standards

 
Building-Damage-Joplin

For reasons that are not clear, 2011 has been one of the most destructive tornado years in history.

Researchers from a team funded by the National Science Foundation have examined some of last spring’s massive tornado damage and conclude in a new report that more intensive engineering design and more rigorous, localized construction and inspection standards are needed to reduce property damage and loss of life.

As one of the nation’s most destructive tornado seasons in history begins to wane, and hurricane season approaches its peak, experts are working to determine if old, tried-and-true approaches to residential and small building construction are still adequate, or if it’s time to revisit these issues.

“Modern building codes are not what we would call inadequate, but they are kind of a bare minimum,” says Rakesh Gupta, a professor of wood engineering and mechanics at Oregon State University, and one of the members of the NSF team that traveled to such sites as Tuscaloosa, Ala., and Joplin, Mo. – where a massive EF5 tornado in May killed more than 150 people and caused damage approaching $3 billion.

“Beyond that, in the actual construction process, buildings are often not built precisely to codes, due to inadequate construction work or code enforcement,” Gupta says. “We can do better. The damage didn’t have to be as bad as it was. We can design and build structures more rigorously that could withstand wind forces up to 140-150 miles per hour, which would help them better resist both tornadoes and hurricanes.”

In their research, the scientists and engineers found that even in the most catastrophic tornadoes, the path exposed to the most extreme winds is very narrow. In the Joplin example, buildings less than one-half mile away probably faced winds in the 130 mph range, which often destroyed them because they lacked appropriate fasteners, tie-downs, connectors, or adequate number of sheathing nails.

“Another thing we need to consider more in our building practices is the local risks and situation,” says Arijit Sinha, an OSU professor in the Department of Wood Science and Engineering.

“Just as cities like San Francisco adapt their building codes to consider earthquake risks, many other towns and cities across the nation could be creating local codes to reflect their specific risks from hurricanes, tornadoes, high winds or other concerns,” Sinha says. “A national building code may be convenient, but it isn’t always the best for every single town in the country.”

Among the findings of the new report:

  • It’s not possible to economically design wood-frame structures that could resist damage from the highest winds in extreme tornado events, such as EF4 or EF5, but irreparable damage from lesser winds could and should be reduced.
  • Tornadoes and hurricanes apply different types of forces to buildings, and what will adequately protect from one type of storm event isn’t identical to the other. Implementing hurricane-region construction practices in a tornado-prone region is a good start, but not an end solution.
  • Vertical uplift, one of the special risks from tornadoes, is often not planned for in traditional construction approaches.
  • Interior closets and bathrooms can provide some protection at lower wind speeds, but more consideration should be given to construction of “safe rooms” that can save lives in major events.

Even where cities and towns don’t have more stringent building codes, Sinha says, individuals can and probably should have their blueprints or structures reviewed by licensed engineers to plan adequately for damage from hurricanes, tornadoes, earthquakes or other extreme forces.


Photo Credit: Dustie / Shutterstock.com

Hurricane Season Problem Prevention                                                

Disaster-Proof Your Biggest Assets

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Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

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Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
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Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.

 

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Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

 

Add highly responsive multi-zone comfort to any building project, in any climate. Our CITY MULTI H2i R2- and Y-Series VRF systems give you flexibility to fit the needs of any building. Enjoy 100% heating capacity at 0°F outdoor ambient, and 85% heating capacity at -13°F outdoor ambient.  For more information, log on to www.mitsubishipro.com

 


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.

 

Replace core drilling with Connectrac In-Carpet and On-Floor Wireways, the proven connectivity solution in open interior spaces of all kinds. These elegant low-profile wireways are great for AV / telecom connectivity wherever it’s needed.

Bluebeam® Revu® simplifies digital facilities document management from design review to leveraging as-builts, maintenance manuals and O&Ms submittals.


 
10/01/2014

Photovoltaic installations serve nearly 2.7 million students

09/30/2014

Incidence of fires and property loss down from 2012

09/29/2014

Academic achievement tied to responsible reporting habits

09/26/2014

Survey shows people more careful, less satisfied in public washrooms.

09/25/2014

A new study shows that switching natural gas for coal will not significantly reduce the amount of CO2 emissions being produced. 

09/24/2014

A new study shows the carbon emission reduction policies individual states have adopted are yielding results.

09/23/2014

A recent survey of industry professionals indicates that investment in energy efficiency projects will increase over the next year.

09/22/2014

Fort Carson in Colorado is well on its way to reaching the goal of net-zero energy by 2020. 

09/19/2014

New regulations from the DOE would improve commercial air conditioner efficiency by as much as 30%. 

09/18/2014

A new study suggests that the installed cost of photovoltaic solar power continues to drop in the U.S.

09/17/2014

A new technology developed at Rice University effectively deices glass surfaces while remaining transparent for radio frequency transmission.

09/16/2014

The USGBC and American Chemistry Council have put aside their differences to work together on new improvements to the LEED certification system. 

09/15/2014

Researchers have developed a new process to help cloud computing systems use less energy while continuing to provide high levels of data services.

09/12/2014

Researchers have found the main factors that influence the amount and type of building damage caused by various types of salts. 

09/11/2014

A new study has demonstrated that proactive ergonomic training can decrease worker discomfort and increase productivity. 

09/10/2014

The University of Utah has upgraded its historic Dumke Health Professions Education building to save an impressive 40% on energy costs.

09/09/2014

Hoping to build on LEED's success, PEER evaulates the performance and modernization of electric grids. 

09/08/2014

The USGBC has developed a new tool to help streamline the LEED certification process. 

09/05/2014

Researchers have developed a fluorescent lamp that emits Wi-Fi signals to allow connectivity throughout buildings.

09/04/2014

Tests show effective measures for reducing earthquake damage to computer servers. 

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