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 | Jun 10, 2021
New York City cracks down on construction site safety
Buildings Dept. issues new safety legislation for City Council consideration.
Codes and Standards | Jun 9, 2021
ASHRAE updates health care facility ventilation standard
Includes improved guidance on thermal comfort, revisions to air filtration requirements.
Codes and Standards | Jun 8, 2021
American Wood Council releases new fire design specification
For design of wood members, assemblies, and connections to meet code requirements.
Codes and Standards | Jun 7, 2021
Guide provides strategies to overcome barriers to sustainable affordable housing
International Living Future Institute document helps with social, regulatory, and financial hurdles.
Codes and Standards | Jun 3, 2021
Conversion of large office buildings to residential will require revamped regulations
Post-1960 offices present ventilation, daylighting, and other challenges.
Codes and Standards | Jun 2, 2021
Dept. of Energy releases EnergyPlus and OpenStudio updates
New features include Python Plugin features and additional tabular reporting options.
Codes and Standards | Jun 1, 2021
Federal plan to double Canadian lumber tariffs draws intense criticism
Builders advised to stock up to deal with shortages.
Codes and Standards | Jun 1, 2021
Passive House standards proving their worth in multifamily sector
Energy performance beats conventionally built by 32% to 58%.
Codes and Standards | May 27, 2021
Pittsburgh combats construction fraud
Crackdown on tax, insurance, and workers’ comp malfeasance.
Codes and Standards | May 26, 2021
Proposal to add photovoltaic panels to the R2 Standard for electronics recycling
Hundreds of facilities in 33 countries could begin recycling PVs.
