Architect Butch Grimes, who examined the wreckage after a half-mile tornado struck Tuscaloosa, Ala., believes toughening building codes can reduce damage from twisters.
“The damage we had on the edges [of the tornado] could have been avoided with simple construction techniques,” Grimes told Scientific American.
The strongest hurricane winds on the coast can reach 180 mph, while the strongest tornadoes, category EF-5, have wind speeds of 200 to 250 mph. Tornadoes that strong are rare, with more common lower-category EF-2 or EF-3 tornadoes having wind speeds in the 100- to 150-mph range. The lower wind speeds, around hurricane strength, are most common on the edge of tornadoes.
“It’s probably not practical to design for EF-5 damage,” Grimes said. Weaker storms, however, can and should be designed for as coastal areas have been doing for years, he said.
Hurricane clips are one potential quick fix. In Alabama, the clips are required for buildings built within 5 miles of the Gulf of Mexico but remain optional farther inland. Reinforced windows could be another effective measure.
(http://www.scientificamerican.com/article/tornado-survival-could-improve-with-better-building-codes/)
Related Stories
| Jun 19, 2013
Construction site safety improved in 2011
On-the-job construction fatalities dropped from 802 in 2010 to 781 in 2011, and recordable injuries fell from 4.7 per 100 workers in 2008 to 3.9 per 100 in 2011, according to data from the Bureau of Labor Statistics.
| Jun 19, 2013
New York City considers new construction standards for hospitals, multifamily buildings
Mayor Michael Bloomberg’s administration has proposed new building codes for hospitals and multifamily dwellings in New York City to help them be more resilient in the event of severe weather resulting from climate change.
| Jun 12, 2013
Green Globes update complies with federal sustainability standards
The Green Building Initiative has updated its green building certification program to comply with the U.S. government’s standards for sustainability in federal buildings.
| Jun 12, 2013
Green Globes update complies with sustainability standards
The Green Building Initiative has updated its green building certification program to comply with the U.S. government’s standards for sustainability in federal buildings.
| May 31, 2013
OSHA will propose to extend crane operator certification compliance date
The Occupational Safety and Health Administration (OSHA) says it will propose to extend the compliance date for the crane operator certification requirement by three years to Nov. 10, 2017.
| May 31, 2013
GIS should guide zoning decisions in states hit hard by Hurricane Sandy, says expert
As New York, New Jersey and other states hit hard during Superstorm Sandy begin their long road to recovery, the decisions they make on how to rebuild are crucial to determining how well they will weather the next big storm.
| May 31, 2013
Bond package to fund $2.7 billion in new university construction dies in Texas Legislature
A $2.7 billion state bond package that would have financed expansion projects at more than a half-dozen universities in Texas died on the final day of the legislative session.
| May 31, 2013
Tax break proposal for $1.5 billion expansion of Minnesota’s Mall of America advances
The Minnesota Legislature approved tax breaks worth $250 million for a $1.5 billion project that would double the size of the Mall of America in Bloomington, Minn.
| May 31, 2013
Debate in the Northwest over how to apply lessons of net-zero construction in codes
Success in constructing net-zero homes in the Northwest has sparked debate over how far green codes should go.
| May 28, 2013
Fire Chiefs Assn., IBHS call for federal legislation to encourage states to adopt, enforce building codes
The International Association of Fire Chiefs (IAFC) and the Insurance Institute for Business & Home Safety (IBHS) are asking Congress to enact the Safe Building Code Incentive Act (SBCIA), which provides financial incentives for states to adopt and enforce building codes.
