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
Codes and Standards | Nov 3, 2021
Fact sheets offer strategies to improve indoor air quality in schools
Center for Green Schools at USGBC document for people without a technical background.
Codes and Standards | Nov 2, 2021
Rapid acceleration of affordable housing development expected over next five years
Federal government programs will spur construction.
Codes and Standards | Nov 1, 2021
New bird-friendly technical design guide released
National Glass Assn. document offers design and installation best practices for glazing.
Codes and Standards | Nov 1, 2021
World’s first chief heat officer tackles how to protect Miamians from extreme heat
Focus on chronic exposure for outdoor workers and for those that can’t afford AC.
Codes and Standards | Oct 28, 2021
Design competition launched to show role of mass timber in decarbonization
Forest Service and Softwood Lumber Board will award $2 million in grants to winning teams.
Codes and Standards | Oct 27, 2021
Texas reforms series of contractor laws
Measures seen as making it easier to do business in the state.
Codes and Standards | Oct 26, 2021
Drownings during Hurricane Ida point out FEMA flood map flaws
Eleven people drowned in New York City in areas marked as low risk.
Codes and Standards | Oct 26, 2021
Dept. of Energy’s REScheck tool updated for the 2021 International Energy Conservation Code
Previous version incorporated 2018 code.
Codes and Standards | Oct 20, 2021
New York City passes overhaul of construction codes
Over 600 major changes along with thousands of smaller updates slated for 2022.
Codes and Standards | Oct 20, 2021
One-quarter of U.S. critical infrastructure at risk of failure due to flooding
Police and fire stations, hospitals, airports, and wastewater treatment facilities face threat.