FACTOID # 22: South Dakota has the highest employment ratio in America, but the lowest median earnings of full-time male employees.
 
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Encyclopedia > William LeMessurier

The engineer responsible for the structural desing of the Citicorp headquarters tower, in New York, (1977).


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Citigroup Center at AllExperts (942 words)
Structural engineer William LeMessurier set the 59-story tower on four massive 114 foot (35 m) high columns, positioned at the center of each side, rather than at the corners.
In 1978, prompted by a question from a student, LeMessurier discovered a potentially fatal flaw in the building's construction: the skyscraper's bolted joints were too weak to withstand 70-mile-per-hour (113 km/h) wind gusts at specific angles.
LeMessurier's act of alerting Citicorp to the problem inherent in his own design is now used as a textbook example of ethical behavior.
THE FIFTY-NINE-STORY CRISIS, The New Yorker, 5/29/95, pp 45-53 (6730 words)
LeMessurier says, "I'd already conceived that you could build a little plywood house around each of the connections that were critical, and a welder could work inside it without damaging the tenants' space.
During LeMessurier's recent trip to Canada, one of Alan Davenport's assistants had mentioned to him that probable wind velocities might be slightly higher, on a statistical basis, than predicted in 1973, during the original tests for Citicorp Center.
At the time, LeMessurier viewed this piece of information as one more nail in the coffin of his career, but later, recognizing it as a blessing in disguise, he passed it on to Citicorp as the possible basis of a cover story for the press and for tenants in the building.
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