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
| Jul 5, 2012
Continued tax breaks necessary for widespread adoption of net zero buildings
Tax breaks passed by the U.S. government to encourage construction of green buildings are set to expire in 2012 and 2013.
| Jun 28, 2012
Six buildings now recognized under Living Building Challenge
The Living Building Challenge (LBC), a green ratings system for design and construction that judges a building based on its actual performance, not just its projected performance at the design stage, has recognized six buildings to date.
| Jun 28, 2012
Label for building products will have ‘global warming number’
The director of the 2030 Challenge for Products says that the organization is aiming to place a label on building products that will list what’s in it, and how much embodied carbon each product represents.
| Jun 28, 2012
Top building material executive urges building resilience in sustainability standards
A meeting of 1,000 business executives at the recent Rio+20 environmental conference featured a passionate plea to include building resilience in efforts to boost sustainability.
| Jun 28, 2012
Following spate of skyscraper balcony glass panel breakages, Ontario adopts code change
Ontario's housing minister announced new building code rules to help prevent glass panels from breaking off high-rise balconies during hot weather.
| Jun 28, 2012
Factory worker deaths in Italy raise questions on building codes after earthquakes
Italian officials are questioning seismic building standards and inspection procedures in the aftermath of two damaging earthquakes.
| Jun 21, 2012
Brazilian engineering/construction firm Odebrecht sues Florida over ban on companies doing business in Cuba
Odebrecht Construction Inc., a Brazilian engineering and construction company, is suing the State of Florida over a new law that bans governments from hiring companies with business ties to Cuba.
| Jun 21, 2012
String of shattered glass balcony panels prompts call for code reform in Ontario
Since last summer, glass balconies have shattered at 13 different buildings in Toronto.
