Featured Research

from universities, journals, and other organizations

World Trade Towers Design Exceeded Wind Load Codes

Date:
October 4, 2004
Source:
National Institute Of Standards And Technology
Summary:
The National Institute of Standards and Technology (NIST) reported on Sept. 17 that it has done additional analysis of the wind "loads" that the World Trade Center (WTC) towers were originally designed to resist--critical data to help the agency better assess the overall strengths and baseline performance of the two buildings before they were brought down by the terrorist attacks of Sept. 11, 2001.

Clip from a computer simulation (containing 90,000 elements) showing the response of the WTC North Tower to wind loads.
Credit: Courtesy of National Institute Of Standards And Technology

The National Institute of Standards and Technology (NIST) reported on Sept. 17 that it has done additional analysis of the wind "loads" that the World Trade Center (WTC) towers were originally designed to resist--critical data to help the agency better assess the overall strengths and baseline performance of the two buildings before they were brought down by the terrorist attacks of Sept. 11, 2001. The work is being conducted as part of NIST's federal building and fire safety investigation of the WTC disaster.

NIST recently completed its review of the original 1960s-era source documents containing wind tunnel test data and wind load estimation methods used for the towers, calculated the wind load estimates based on a clearer interpretation of this information, and determined the values actually used in the design of the buildings. These clarified original design wind load estimates all exceed those established by the New York City building code prior to 1968 (when the WTC towers were designed) and through 2001 (when the towers were destroyed). The values also are higher than those required by other selected building codes of the era, including the relevant national model building code.

Wind load capacity is a key factor in determining the overall strength of a tall building and is important in determining not only its ability to withstand winds but also its reserve capacity to withstand unanticipated events such as a major fire or impact damage.

The NIST investigation team's final report is scheduled for release as a draft document in December 2004. For more information on the new findings, go to http://www.nist.gov/public_affairs/releases/wtc_wind_loads.htm.


Story Source:

The above story is based on materials provided by National Institute Of Standards And Technology. Note: Materials may be edited for content and length.


Cite This Page:

National Institute Of Standards And Technology. "World Trade Towers Design Exceeded Wind Load Codes." ScienceDaily. ScienceDaily, 4 October 2004. <www.sciencedaily.com/releases/2004/10/041004081444.htm>.
National Institute Of Standards And Technology. (2004, October 4). World Trade Towers Design Exceeded Wind Load Codes. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2004/10/041004081444.htm
National Institute Of Standards And Technology. "World Trade Towers Design Exceeded Wind Load Codes." ScienceDaily. www.sciencedaily.com/releases/2004/10/041004081444.htm (accessed April 18, 2014).

Share This



More Matter & Energy News

Friday, April 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
Powered by NewsLook.com
Horseless Carriage Introduced at NY Auto Show

Horseless Carriage Introduced at NY Auto Show

AP (Apr. 17, 2014) An electric car that proponents hope will replace horse-drawn carriages in New York City has also been revealed at the auto show. (Apr. 17) Video provided by AP
Powered by NewsLook.com
Honda's New ASIMO Robot, More Human-Like Than Ever

Honda's New ASIMO Robot, More Human-Like Than Ever

AFP (Apr. 17, 2014) It walks and runs, even up and down stairs. It can open a bottle and serve a drink, and politely tries to shake hands with a stranger. Meet the latest ASIMO, Honda's humanoid robot. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com
German Researchers Crack Samsung's Fingerprint Scanner

German Researchers Crack Samsung's Fingerprint Scanner

Newsy (Apr. 16, 2014) German researchers have used a fake fingerprint made from glue to bypass the fingerprint security system on Samsung's new Galaxy S5 smartphone. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins