She got in touch with LeMessurier’s of ce and was reas-sured that the building was ne. Courtesy of Diane Hartley. The problem was discovered in 1978, when structural engineer William LeMussurier’s staff had a discussion with a Princeton University civil engineering student named Diane Hartley. In 1978 Diane Hartley was an engineering student at Princeton, studying with David Billington who was offering a course on structures and their scientific, social, and symbolic implications (subsequently titled, “Structure and the Urban Environment”). Citigroup Center in New York was erected on stilts to avoid the church below, Hotel Ascher Wildkirchli: A truly wild mountain experienceÂ, "Wood" you believe it? Author(s): Caroline Whitbeck. The 59-storey Citigroup Center was erected on top of four stilts in 1977 to avoid an historic church below, but Diane Hartley's call to engineer William LeMessurier to query whether a hurricane could collapse the building resulted in an emergency redesign to tackle the flaw she highlighted. Curved skyscraper focuses sunlight and melts cars, Why Japanese hospitals don't have a 4th or 9th floor, Citigroup Center skyscraper collapse averted by student's phone call. Part of history: This is Diane Hartley - who is now a real estate consultant in Washington D.C. - who helped discover the massive flaw in the Citigroup Center He contemplated suicide. It turns out that she was the student in LeMessurier’s story. But word of Hartley’s inquiry got back to LeMessurier, and he de- The 59-storey Citigroup Center was erected on top of four stilts in 1977 to avoid an historic church below, but Diane Hartley's call to engineer William LeMessurier to query whether a hurricane could collapse the building resulted in an emergency redesign to tackle the flaw she highlighted. Diane Hartley As for LeMessurier, the executives at Citicorp asked no more than the $2 million his insurance policy covered, despite the fact that the repairs alone cost over $8 million. The world's oldest wood building has 1,400 years of age, A building higher than three times Titanic's length, International Shanghai Hotel, innovation taken to new and fantastic lows, Liebian International building boasts a waterfall, Thames Barrier against tide flooding in London, Oops! He told LeMessurier that Citicorp Center could blow over in the wind. LeMessurier’s unflinching disclosure of the problem is today used as a case study in professional ethics. Diane Hartley, a Princeton engineering student, was the hero in this drama. It is generally thought that his forthrightness so impressed the executives that they decided to keep their lawyers at bay. Disaster was averted when an undergraduate telephoned the designer of a Manhattan skyscraper to highlight a construction flaw: The joints in the chevrons were bolts, not welds. In the course of writing her thesis, she had questioned LeMessurier’s calculations – triggering his reevaluation of the design. The BBC aired a special on the Citicorp Center crisis, and one of its viewers was Diane Hartley. University engineering student Diane Hartley wrote an un-dergraduate thesis challenging how well the building would do facing quartering winds, the winds that strike a building on its corners. According to LeMessurier, in 1978 he got a phone call from an undergraduate architecture student making a bold claim about LeMessurier’s building. Addendum: The Diane Hartley Case.
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