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  2. Citicorp Center engineering crisis - Wikipedia

    en.wikipedia.org/wiki/Citicorp_Center...

    The Citigroup Center, originally known as Citicorp Center, is a 59-story skyscraper at 601 Lexington Avenue in the Midtown Manhattan neighborhood of New York City. [5] [6] [7] It was designed by architect Hugh Stubbins as the headquarters for First National City Bank (later Citibank), along with associate architect Emery Roth & Sons.

  3. William LeMessurier - Wikipedia

    en.wikipedia.org/wiki/William_LeMessurier

    LeMessurier is perhaps best known for his role during the Citicorp Center engineering crisis, when he secretly reassessed his calculations on the Citicorp headquarters tower in New York City after the building had been finished in 1977.

  4. Citigroup Center - Wikipedia

    en.wikipedia.org/wiki/Citigroup_Center

    The Citigroup Center (formerly Citicorp Center and also known by its address, 601 Lexington Avenue) is an office skyscraper in the Midtown Manhattan neighborhood of New York City. Built in 1977 for Citibank , it is 915 feet (279 m) tall and has 1.3 million square feet (120,000 m 2 ) of office space across 59 floors.

  5. Citigroup's $100 Billion Problem - AOL

    www.aol.com/news/2012-07-21-citigroups-100...

    While there are many explanations for these valuations -- the European debt crisis, new regulations, and so on -- in Citigroup's case, it has to do with a massive $100 billion portfolio of toxic ...

  6. Government fines Citigroup $136 million for failing to fix ...

    www.aol.com/news/government-fines-citigroup-136...

    A pair of government regulators slapped Citigroup with a $135.6 million fine on Wednesday, saying the bank has made insufficient progress in resolving longstanding internal control and risk issues.

  7. Citigroup may solve its $100 million trader problem

    www.aol.com/news/2009-08-03-citigroup-may-solve...

    Citigroup (NYSE:C) is concerned that the government will pressure it to reduce or eliminate a $100 million bonus that it apparently owes the head of its Phibro energy trading unit. The bank fears ...

  8. Tuned mass damper - Wikipedia

    en.wikipedia.org/wiki/Tuned_mass_damper

    Citigroup Center in New York City – designed by William LeMessurier and completed in 1977, it was one of the first skyscrapers to use a tuned mass damper to reduce sway. [21] Its damper is concrete. Comcast Center in Philadelphia contains the largest tuned liquid column damper (TLCD) in the world at 1,300 short tons (1,200 t). [22]

  9. Leslie E. Robertson - Wikipedia

    en.wikipedia.org/wiki/Leslie_E._Robertson

    Leslie Earl Robertson (February 12, 1928 – February 11, 2021) was an American engineer. He was the lead structural engineer of the Twin Towers of the original World Trade Center in New York City, [1] and served as structural engineer on numerous other projects, including the U.S. Steel Tower in Pittsburgh, Shanghai World Financial Center, and the Bank of China Tower in Hong Kong.