Computer Design of 100-Story John Hancock Center

by Fazlur R. Khan,
Srinivasa H. Iyengar,
Joseph P. Colaco,


Serial Information: Journal of the Structural Division, 1966, Vol. 92, Issue 6, Pg. 55-74


Document Type: Journal Paper

Abstract: The 100-story John Hancock Center in Chicago, Ill., with a total of about 2,800,000 sq ft of floor area had to be completely designed within one year. Because of the unique structural system and the tapered shape of the building, a large volume of analysis and design work was anticipated. Therefore, because of the extremely short schedule, a detailed program of coordinated usage of large and small computers was developed. Although the writers' firm had a small computer (IBM 1620) at that time, it was immediately recognized that the complexity of the structure would require special use of large computers. The various phases of small-to-large computer coordination that led to the successful completion of the design of this unusual and complicated structure, are described in detail.

Subject Headings: High-rise buildings | Building design | Structural analysis | Floors | Scheduling | Computer software | North America | Illinois | United States | Chicago

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