GoodOwl
The 1 Hoo Knocks

Posts: 24,057
Joined: Nov 2010
Reputation: 1817
I Root For: New Horizons
Location: Planiverse
|
RE: OT: NEW He's Dead, Jim--notable Deaths thread
Leslie E. Robertson, structural engineer of the World Trade Center, passes away at 92
Quote: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, 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.
Robertson's engineering career began in 1952, when he joined Kaiser Engineering. He worked as a mathematician, structural engineer, and electrical engineer during this time. He was also part of the investigation team studying the collapse of an offshore drilling platform. He later went on a road trip and ran out of funds in Seattle, where he then joined the Seattle-based structural and civil engineering firm Worthington and Skilling in 1958.
When Seattle-born American architect Minoru Yamasaki won the competition to design the World Trade Center, Robertson and his firm Worthington, Skilling, Helle, and Jackson (WSHJ) got the engineering contract. Designed between 1966 and 1971, this was the firm's and Robertson's first high rise construction. His interactions with Yamasaki led to the conceptualization of the tube design for the buildings with exterior columns that were two feet apart along the building's height, specifically designed to provide a sense of enclosure for people in the building. This also meant that, unlike most skyscrapers of the time that were supported by concrete or steel frames with columns interrupting the interiors, the WTC design permitted column-free interiors, with the weight being handled by the exterior columns and the steel and concrete cores. Steel trusses supported the floors and connect exterior columns and the central cores.
In addition to the World Trade Center, he was involved in structural engineering and design for other skyscrapers including; the U.S. Steel Headquarters in Pittsburgh, the Shanghai World Financial Center, and the Bank of China Tower in Hong Kong designed by the Chinese-American architect I. M. Pei, and Puerta de Europa in Madrid. Further Robertson engineered the building of museums in Seattle, Portland, Maine, and Berlin in addition to theaters and bridges. Robertson structurally engineered the installation of American sculptor Richard Serra's works.
![[Image: +-+732370744_140.jpg?SearchOrder=+-+OT,OS,TN,GO,FA]](https://coverart.oclc.org/ImageWebSvc/oclc/+-+732370744_140.jpg?SearchOrder=+-+OT,OS,TN,GO,FA)
In 'The Structure of Design', Leslie Earl Robertson recounts a storied career in engineering which has generated among the most innovative and formally daring buildings of the modern era, as well as his extensive collaborations with several titans of the practice: Minoru Yamasaki, Philip Johnson, Max Abramovitz, Romaldo Giurgola, I. M. Pei, Pei Partnership, KPF, Kiyonori Kikutake, and Gunnar Birkerts. Robertson's large-scale projects with some of the leading sculptors of the day, including Richard Serra and Beverly Pepper, display the range of this engineer's craft. As a restless student from modest origins, Robertson's first encounters with engineering were almost accidental, yet he would go on to be lead engineer of the landmark IBM buildings in Pittsburgh and Seattle while still in his early thirties. Immediately thereafter he embarked on what would become his most renowned project, the World Trade Center, to be followed by scores of major buildings around the world.
|
|