Leslie Earl Robertson (born February 12, 1928) is an American engineer. He was the lead structural engineer of the Twin Towers of the original World Trade Center in New York City.[1] He has since been structural engineer on numerous other projects, including the Shanghai World Financial Center and the Bank of China Tower in Hong Kong.


Robertson's engineering career began in 1952, when he graduated from the Berkeley school of civil engineering with a bachelor of science degree and joined Kaiser Engineering. In 1958 he joined the Seattle structural and civil engineering firm Worthington and Skilling.

As an "up-and-coming engineer", Robertson was selected by Worthington, Skilling, Helle, and Jackson (WSHJ) to participate in the design of the World Trade Center Twin Towers (1966–1971), his first high rise construction.[2] In 1967 Robertson was made a partner and WSHJ was renamed Skilling, Helle, Christiansen, Robertson. The firm split its operations in 1982 with Robertson renaming the East Coast office Leslie E. Robertson Associates R.L.L.P.[3]

Robertson's firm participated in the development of a database of basic structural information for the towers of the World Trade Center (WTC1 and 2) for NIST and FEMA[4] and to record the undocumented structural changes that had been made to the buildings after construction began.

Since the collapse of the World Trade Center, debate about the safety of rent-space-maximized designs have engaged the profession, but most would agree that the design of the World Trade Center actually withstood the impact of the plane with enough time to allow many thousands to evacuate safely.[5]




  1. ^ http://www.nj.com/news/index.ssf/2011/09/the_world_trade_center_work_of.html
  2. ^ Koch, Karl (2002). Men of Steel: The Story of the Family That Built the World Trade Center. New York: Crown Publishers. ISBN 1-4000-4601-7. 
  3. ^ Leadership and Management in Engineering magazine. Volume 9, Issue 1, Engineering Legends pp. 46-50 (January 2009)
  4. ^ Leslie E. Robertson Associates support to NIST/FEMA Archived 2009-08-15 at the Wayback Machine.
  5. ^ http://www.fema.gov/pdf/library/fema403_execsum.pdf
  6. ^ "NAE Members - Mr. Leslie E. Robertson". NAE.edu. National Academy of Engineering. Retrieved November 25, 2015. 
  7. ^ Lewis, Scott (April 20, 2015), "ENR Marks 50 Years of Excellence", Engineering News-Record, New York: Dodge Data & Analytics, vol. 274 no. 11, pp. 42–56, ISSN 0891-9526 
  8. ^ "Outstanding Projects And Leaders (OPAL) Leadership Awards Past Award Winners". ASCE.org. American Society of Civil Engineers. Archived from the original on November 25, 2015. Retrieved November 25, 2015. 
  9. ^ "IStructE Gold Medal Winners 1922-2008". Retrieved 3 September 2015. 
  10. ^ "2004 Fazlur Khan Medal Winner". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012. 
  11. ^ "Historical List of Distinguished and Honorary Members" (PDF). ASCE.org. American Society of Civil Engineers. Archived from the original (PDF) on November 25, 2015. Retrieved November 25, 2015. 
  12. ^ "Award Guide and Past Recipients". American Association of Engineering Societies. Archived from the original on 2013-05-11. Retrieved 2013-04-01. 
  13. ^ "La Fundación José Entrecanales Ibarra premia al ingeniero estadounidense Leslie E. Robertson". Acciona. Retrieved 2016-06-20. 

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