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
| Jan 18, 2012
Report analyzes residential hurricane codes in 18 states
The Insurance Institute for Business & Home Safety (IBHS) released a new report analyzing residential building codes in 18 hurricane-prone coastal states along the Gulf of Mexico and the Atlantic Coast.
| Jan 18, 2012
Death in Chicago high-rise apartment fire blamed on fire code
The death of a Chicago woman who stepped off her elevator into a blazing inferno last week has underscored the need for fire sensors in elevators.
| Jan 18, 2012
California approves open cell spray foam for energy efficiency standards
The California Energy Commission (CEC) now recognizes open-cell spray foam as an accepted insulation in its 2008 Building Energy Efficiency Standards.
| Jan 5, 2012
Building to LEED standards now an 'easy call' from cost standpoint
Once seen as a cost burden, building to LEED standards is now an "easy call," according to Dan Probst, chairman of energy and sustainability for real estate management and development firm Jones Lang LaSalle.
| Jan 5, 2012
Minnesota's GreenStep Cities program aids communities in winning grants
GreenStep Cities, a Minnesota initiative, was designed to provide greater recognition to the state's communities for achievements in meeting sustainability standards and goals.
| Jan 5, 2012
Some ADA accessibility rules change in 2012
Some changes to the Americans with Disabilities Act go into effect beginning March 15, 2012.
| Jan 5, 2012
Ontario's stringent energy code has builders concerned over indoor air quality
Some Ontario builders are worried that new building code requirements with stricter energy efficiency measures could lead to poor indoor air quality.
| Jan 5, 2012
New law bars Defense Department from new LEED certifications
The Defense Department will not be allowed to use any money to certify its buildings LEED Gold or Platinum, under a law President Obama signed Dec. 31.
| Jan 5, 2012
Some ADA accessibility rules change in 2012
Some changes to the Americans with Disabilities Act go into effect beginning March 15, 2012.
| Jan 3, 2012
New SJI Rule on Steel Joists
A new rule from the Steel Joist Institute clarifies when local reinforcement of joists is required for chord loads away from panel points. SJI members offer guidance about how and when to specify loads.
