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 | Apr 18, 2018
New Green Globe pilot program launched
Precursor to revised Green Globes Assessment Protocol for Commercial Buildings.
Codes and Standards | Apr 17, 2018
Contractor charged with fraud in winning $200 million in federal contracts
Accused of falsely claiming veteran- and minority-owned business status.
Codes and Standards | Apr 16, 2018
Wide variations in adoption of National Electric Code could jeopardize safety
An NFPA report found that code adoption is under heavier political scrutiny, leading to delays and decisions motivated by factors other than safety concerns.
Codes and Standards | Apr 12, 2018
Corruption in New York City construction industry is common
Scale of projects, number of players involved contributes to problem.
Codes and Standards | Apr 11, 2018
Urgent need for government to make communities, infrastructure more resilient
More than 350 people died from extreme weather events in 2017.
Codes and Standards | Apr 10, 2018
Boosting energy efficiency helps reduce health risks
Cleaner air results in fewer heart attacks, respiratory disease, and premature deaths.
Codes and Standards | Apr 9, 2018
U.K. business leaders call for zero-carbon buildings by 2030
Real estate, construction industry executives among those supporting the goal.
Codes and Standards | Apr 5, 2018
In Houston, proposed rules would require building above 500-year flood level
Change would impact 85,739 pieces of property.
Codes and Standards | Apr 4, 2018
New ASTM standard supports stucco use in construction
Provides way to measure tensile strength in vertical applications.
Codes and Standards | Apr 3, 2018
LEED v4.1 O+M for Existing Buildings available for beta testing
Update said to be most inclusive and transparent platform to date.