Corvallis, Ore. (UPI) May 13, 2011
Damage caused by tornadoes in the U.S. South in late April have raised questions about building practices and construction code enforcement, researchers say.
Scientists from Oregon State University said while there is no practical, economical way to build structures that could stand up to the EF5 strength tornadoes that occurred in the outbreak, damage from lesser storms could be reduced by better building practices and better enforcement of existing codes.
OSU researchers, with a rapid assessment team supported by the National Science Foundation, said much of the damage could be traced to inadequate connections between building members -- especially trusses, roof rafters and walls -- and that even though modern codes are generally adequate they are not always followed or enforced, a university release said Thursday.
"Time and again we've seen that such connections are often inadequate under extreme loading conditions," Rakesh Gupta, an OSU professor of wood science and engineering, said. "For instance, trusses that were just toe-nailed to the walls often failed in the high winds, the roof blew off and that allowed the rest of the building to collapse."
The problem is not just the building codes but the enforcement of the codes, he said.
"In one town in Alabama, I was told there is no inspection of homes by the city building inspector," he said. "Property taxes are very low, inspection is often inadequate, and sometimes that can result in inadequate construction quality and enforcement."
Share This Article With Planet Earth
Bringing Order To A World Of Disasters
A world of storm and tempest
When the Earth Quakes
Beijing (AFP) May 13, 2011
More than 40 people were injured Friday when a disgruntled former employee set off a petrol bomb at a bank in a Tibetan-inhabited region of northwest China, authorities said. The attack started a fire at the Agriculture Credit Cooperative in Huazangsi, Gansu province, according to a statement issued by local officials. Of the injured, 19 were in serious condition. The former employee, id ... read more
Japan's nuclear crisis timetable on track: PM|
Tornado damage raises building questions
Quake-hit Japan pottery town picking up pieces
Radioactive ash found in Tokyo sewage plant: reports
How to control complex networks
Video gaming teens sleep less: study
Mixing fluids efficiently in confined spaces: Let the fingers do the working
Shaking down frozen helium: In a 'supersolid' state, it has liquid-like characteristics
First ocean acidification buoy installed off Alaska
Water for Mongolia
Salinity in Outer Banks wells traced to fossil seawater
Egyptian PM in Ethiopia for Nile talks
Canada PM's Arctic stand 'frosty rhetoric'
States set rules on exploiting Arctic wealth
Antarctic icebergs help the ocean take up carbon dioxide
Change is the order of the day in the Arctic
Drought tolerance in crops: Shutting down the plant's growth inhibition under mild stress
India's top court imposes ban on 'toxic' pesticide
New Strategy Aims to Reduce Agricultural Ammonia
'Liquid smoke' from rice shows potential health benefits
New Zealand inquest told of quake victims' last moments
Local tsunami alert after 6.5 quake off Papua New Guinea
US bid to save Louisiana cities from historic flooding
One-eighth of quake-hit Spanish city damaged
Humanity can and must do more with less
Outside View: Kenya mobile banking network
Burkina Faso ruling party says opposition aiming for coup
Chinese army gives rocket launchers, weapons to Sierra Leone
Ancient rock carvings found in Sudan
New method for engineering human tissue regeneration
Indian brides told to put down their mobile phones
Super-healing researcher follows intuition
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement|